HomeMy WebLinkAboutSW3220403_Design Calculations_20220429ENGINEERING CALCULATIONS
FOR
THE BLUFFS AT WESLEY CHAPEL
UNION COUNTY, NORTH CAROLINA
Jones Homes USA
370 Centerpointe Circle
Altamonte Springs, FL 32701
February 2022
LandDesign Project #: 1021119
Calculated By: CJC
5EAL
043168
02/25/2022
LandDesigm
TABLE OF CONTENTS
• PROJECT NARRATIVE
• USGS MAP
• SOILS MAP
• FLOOD MAP
• EROSION CONTROL CALCULATIONS
• SEDIMENT BASIN CALCULATIONS
• TEMPORARY SLOPE DRAIN CALCULATIONS
• TEMPORARY DIVERSION DITCH CALCULATIONS
• PRE DEVELOPED CALCULATIONS
• POST DEVELOPED CALCULATIONS
• BMP-1 CALCULATIONS
• BMP-2 CALCULATIONS
• BOUYANCY CALCULATIONS
• RIP RAP CALCULATIONS
• STORM DRAINAGE CALCULATIONS
• STORM DRAINAGE CALCULATIONS - 10 YEAR
• STORM DRAINAGE CALCULATIONS - 25 YEAR
Project Narrative:
The Bluffs at Wesley Chapel
LDI Project No. 1021119
Developer:
Jones Homes USA
370 Centerpointe Circle
Altamonte Springs, FL 32701
Project Description:
The following calculations have been performed in support of the construction of The Bluffs
at Wesley Chapel Single -Family Residential Development. The project is zoned R-40 in
Union County, NC. The construction will include installation of new buildings, associated
utilities, storm drainage, wet pond, and offsite roadway improvements.
Soils Information:
The predominant soils for this site are TbB2, GsE, ChA. The site soils map showing detailed
locations is included. For design purposes, "B" & "D" were used as the hydrologic soil
groups.
Erosion Control:
Silt fence will be used around the site to prevent sediment from entering adjacent properties
and the existing creek. Temporary diversion ditches and skimmer sediment basins will be
installed within the site to prevent sediment from entering the storm drainage system until
the areas around them have been stabilized.
Pre -Developed Drainage:
The existing storm water collection system consists of sheet flow, shallow concentrated, and
open channel flow. The existing storm water collects into East Fork Twelvemile Creek, which
runs along the northern property boundary.
Post -Developed Drainage:
The proposed storm water collection system will consist of drainage swales and one wet
pond within the project boundaries. The storm system was designed to detain the 10 and 25
year storm events and to have a minimum of 85% average annual removal for Total
Suspended Solids and 40% average annual removal for Total Phosphorus. Proposed water
quality/channel protection/detention requirements are being met according to the NCDEQ
Requirements.
Water Quality Summary:
BMP-1 Required Surface Area: 4,890 sf
BMP-1 Required WQ Volume: 10,725 cf
BMP-2 Required Surface Area: 5,946 sf
BMP-2 Required WQ Volume: 15,460 cf
BMP-1 WQ Volume of 10,725 cf is provided at elevation 570.60 ft.
BMP-2 WQ Volume of 15,460 cf is provided at elevation 576.59 ft.
Stormwater Detention Summary:
Site Drainage Area Total: 37.65 acres
Qz (Pre -Developed): 16.82 cfs
Q,o (Pre -Developed): 46.11 cfs
Qzs (Pre -Developed): 67.52 cfs
Qz (Post -Developed BMP-1) Detained Detention Release: 3.81 cfs
Q,o (Post -Developed BMP-1) Detained Detention Release: 10.97 cfs
Qzs (Post -Developed BMP-1) Detained Detention Release: 14.49 cfs
Qz (Post -Developed BMP-2) Detained Detention Release: 0.79 cfs
Q,o (Post -Developed BMP-2) Detained Detention Release: 3.37 cfs
Qzs (Post -Developed BMP-2) Detained Detention Release: 6.32 cfs
Qz (Post -Developed Non -detained Area): 10.74 cfs
Q,o (Post -Developed Non -detained Area): 30.92 cfs
Qzs (Post -Developed Non -detained Area): 46.23 cfs
Qz (Post -Developed Total): 3.81 + 0.79 + 10.74 = 15.34 cfs
Q,o (Post -Developed Total): 10.97 + 3.37 + 30.92 = 45.26 cfs
Qzs (Post -Developed Total): 14.49 + 6.32 + 46.23 = 67.04 cfs
Qz (Post -Developed vs. Pre -Developed): 15.34 cfs < 16.82 cfs
Q,o (Post -Developed vs. Pre -Developed): 45.26 cfs < 46.11 cfs
Qzs (Post -Developed vs. Pre -Developed): 67.04 cfs < 67.52 cfs
Conclusion:
The engineering analysis presented herein this document demonstrates the ability of the
Wet Ponds to meet the design requirements. The calculations show the Wet Pond has
sufficient volume to meet the NCDEQ's requirements for BMPs. Moreover, the routing
calculations show the Wet Pond's ability to detain flows to pre -developed rates.
USGS Map:
The National Map Advanced Viewer
CY,v. _ _ -.�_ �ti, � IM1 ,��. :. � .I r I _. . �„ �� � __ �rl�rf.' `fir. . � I i. - • �'"--
Q.
�-
1 `` �
'! �
- _ :� - �•'��_��'�'' --- 'fir-�;±F{'r. '- i _ - •'�- � � � ! � — {-''�,}' �,`' _=�' __.,-- 1
4:� _ - .. f-"__-' � r' �� - — ,`r'.•. • f _ � "tom �
- - -�~ "�-1 •`�����--' , I ;'ik-� � � I ••�:} _ �•�f _`�r'' '�{:' 'i ;I `f f, f- � rf''S `�_ - I rJ
• ITL F - }{~� - I _ 'r,� .'' 'I' --l{r - f }J "• `i' _1
_ - -
SITE
' '��•` •'r4.1 III', �,ff_�f:.•y` '. `�J -J Lf .: -- _ � 'i'i � I I i - � � J��+� -- '� I � �k~ I �kil•' I r 'I ':��;ti L_� ,If f f ',I 'r
''F-�' � � _�.. �` _ _ I .. -- � ��'��,:. _ _ � f �''.. •'fin . _ _ _
.. ... - __ •I - � f �f •�' "I ram`_'.• i { -
_
I• .�•{ III _ - - _ ~��.. - f — � __ � '%i k
Zi.l'� _) r �q r+1.
�a � L '� �;`- ~�{��' � �I� _ ,� �' Lam_•";�. �.
- } � rl - ,/y � f/ . ��' {•"-=':�. v�' � � F . �`� ,'� _ y�� Cif r~� -
_ -�' J� , J'• :A: ` _�`J +l z�... �?. .M1 _ _ mar' �� ''I L'{
:I64
• r . f ; +,•y . .. _ I r1.. ��.• : _�. -�� � C-. 1. = '�� : - � Q-� �_�' .r Cr' .r
X N%,',
III. ..Ir��'' : rI , Ir; - . � � S " � - '���'::.:•. r� I '� k ��_' .. �' r - I
- l o�� I _
', ;:•'�,y" f rr'� � . _ - �' _ 'I_i . .
__ - I,'_ } •.I � - .'4f ' I � - f � _"�� - _ �� I . _ , I ,� ,J� �� J� 11� �' �- � I--•'-, f " V Ij Ir�� Ir.
r - � i I +�J ;'j i } JFI� ,r -'7 �"' � ii. - vl, f'r {f. � � - - - � �: I •.:� x � �lr - {l �'F'� ��I~ � �� :'� I
• f ri�L I r=J I i �.
2/9/2022, 12:06:55 PM
Override 1
Normal Intermediate Contours
Normal Index Contours
1:36,112
0 0.35 0.7 1.4 mi
0 0.5 1 2 km
USGS The National Map: National Boundaries Dataset, 3DEP
Elevation Program, Geographic Names Information System,
National Hydrography Dataset, National Land Cover Database,
National Structures Dataset, and National Transportation Dataset;
USGS
2021 USGS
Soils Map:
a
528200
34° 58' 47" N
r
�i
r
�i
r
�i
r
�i
r
�i
34° 58' 19" N
528200 528300 528400 528500 528600
Map Scale: 1:4,230 if printed on A portrait (8.5" x 11") sheet.
` Meters
$ N 0 50 100 200 500
Feet
0 200 400 800 1200
Map projection: Web Mercator Comer coordinates: WGS84 Edge tics: UTM Zone 17N WGS84
9
Custom Soil Resource Report
Soil Map
528300 5284M 52M 528600
528700
528700
a
528800
34° 58' 47" N
r
�i
r
�i
r
�i
r
�i
N34° 58.19.. N
528800
a
MAP LEGEND
Area of Interest (AOI)
0
Area of Interest (AOI)
Soils
0
Soil Map Unit Polygons
Soil Map Unit Lines
Soil Map Unit Points
Special
Point Features
Iwo
Blowout
Borrow Pit
Clay Spot
Closed Depression
Gravel Pit
�i
Gravelly Spot
Landfill
A.
Lava Flow
Marsh or swamp
Mine or Quarry
Miscellaneous Water
Perennial Water
Rock Outcrop
Saline Spot
Sandy Spot
Severely Eroded Spot
Sinkhole
Slide or Slip
oa
Sodic Spot
Custom Soil Resource Report
MAP INFORMATION
Spoil Area
The soil surveys that comprise your AOI were mapped at
1:24,000.
Stony Spot
Very Stony Spot
Warning: Soil Map may not be valid at this scale.
Wet Spot
Enlargement of maps beyond the scale of mapping can cause
Other
misunderstanding of the detail of mapping and accuracy of soil
�-
Special Line Features
line placement. The maps do not show the small areas of
contrasting soils that could have been shown at a more detailed
Water Features
scale.
Streams and Canals
Transportation
Please rely on the bar scale on each map sheet for map
E F
Rails
measurements.
. 0
Interstate Highways
Source of Map: Natural Resources Conservation Service
US Routes
Web Soil Survey URL:
Coordinate System: Web Mercator (EPSG:3857)
Major Roads
Local Roads
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
Background
distance and area. A projection that preserves area, such as the
Aerial Photography
Albers equal-area conic projection, should be used if more
accurate calculations of distance or area are required.
This product is generated from the USDA-NRCS certified data as
of the version date(s) listed below.
Soil Survey Area: Union County, North Carolina
Survey Area Data: Version 22, Jan 21, 2022
Soil map units are labeled (as space allows) for map scales
1:50,000 or larger.
Date(s) aerial images were photographed: Jul 18, 2011—Nov
25, 2017
The orthophoto or other base map on which the soil lines were
compiled and digitized probably differs from the background
imagery displayed on these maps. As a result, some minor
shifting of map unit boundaries may be evident.
10
Custom Soil Resource Report
Map Unit Legend
Map Unit Symbol
Map Unit Name
Acres in AOI
Percent of AOI
ChA
Chewacla silt loam, 0 to 2
9.1
22.2%
percent slopes, frequently
flooded
GsE
Goldston-Badin complex, 15 to
16.8
41.0%
45 percent slopes
TbB2
Tarrus gravelly silty clay loam, 2
15.0
36.8%
to 8 percent slopes,
moderately eroded
Totals for Area of Interest
40.8
100.0%
Map Unit Descriptions
The map units delineated on the detailed soil maps in a soil survey represent the
soils or miscellaneous areas in the survey area. The map unit descriptions, along
with the maps, can be used to determine the composition and properties of a unit.
A map unit delineation on a soil map represents an area dominated by one or more
major kinds of soil or miscellaneous areas. A map unit is identified and named
according to the taxonomic classification of the dominant soils. Within a taxonomic
class there are precisely defined limits for the properties of the soils. On the
landscape, however, the soils are natural phenomena, and they have the
characteristic variability of all natural phenomena. Thus, the range of some
observed properties may extend beyond the limits defined for a taxonomic class.
Areas of soils of a single taxonomic class rarely, if ever, can be mapped without
including areas of other taxonomic classes. Consequently, every map unit is made
up of the soils or miscellaneous areas for which it is named and some minor
components that belong to taxonomic classes other than those of the major soils.
Most minor soils have properties similar to those of the dominant soil or soils in the
map unit, and thus they do not affect use and management. These are called
noncontrasting, or similar, components. They may or may not be mentioned in a
particular map unit description. Other minor components, however, have properties
and behavioral characteristics divergent enough to affect use or to require different
management. These are called contrasting, or dissimilar, components. They
generally are in small areas and could not be mapped separately because of the
scale used. Some small areas of strongly contrasting soils or miscellaneous areas
are identified by a special symbol on the maps. If included in the database for a
given area, the contrasting minor components are identified in the map unit
descriptions along with some characteristics of each. A few areas of minor
components may not have been observed, and consequently they are not
mentioned in the descriptions, especially where the pattern was so complex that it
was impractical to make enough observations to identify all the soils and
miscellaneous areas on the landscape.
The presence of minor components in a map unit in no way diminishes the
usefulness or accuracy of the data. The objective of mapping is not to delineate
11
Custom Soil Resource Report
pure taxonomic classes but rather to separate the landscape into landforms or
landform segments that have similar use and management requirements. The
delineation of such segments on the map provides sufficient information for the
development of resource plans. If intensive use of small areas is planned, however,
onsite investigation is needed to define and locate the soils and miscellaneous
areas.
An identifying symbol precedes the map unit name in the map unit descriptions.
Each description includes general facts about the unit and gives important soil
properties and qualities.
Soils that have profiles that are almost alike make up a soil series. Except for
differences in texture of the surface layer, all the soils of a series have major
horizons that are similar in composition, thickness, and arrangement.
Soils of one series can differ in texture of the surface layer, slope, stoniness,
salinity, degree of erosion, and other characteristics that affect their use. On the
basis of such differences, a soil series is divided into soil phases. Most of the areas
shown on the detailed soil maps are phases of soil series. The name of a soil phase
commonly indicates a feature that affects use or management. For example, Alpha
silt loam, 0 to 2 percent slopes, is a phase of the Alpha series.
Some map units are made up of two or more major soils or miscellaneous areas.
These map units are complexes, associations, or undifferentiated groups.
A complex consists of two or more soils or miscellaneous areas in such an intricate
pattern or in such small areas that they cannot be shown separately on the maps.
The pattern and proportion of the soils or miscellaneous areas are somewhat similar
in all areas. Alpha -Beta complex, 0 to 6 percent slopes, is an example.
An association is made up of two or more geographically associated soils or
miscellaneous areas that are shown as one unit on the maps. Because of present
or anticipated uses of the map units in the survey area, it was not considered
practical or necessary to map the soils or miscellaneous areas separately. The
pattern and relative proportion of the soils or miscellaneous areas are somewhat
similar. Alpha -Beta association, 0 to 2 percent slopes, is an example.
An undifferentiated group is made up of two or more soils or miscellaneous areas
that could be mapped individually but are mapped as one unit because similar
interpretations can be made for use and management. The pattern and proportion
of the soils or miscellaneous areas in a mapped area are not uniform. An area can
be made up of only one of the major soils or miscellaneous areas, or it can be made
up of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example.
Some surveys include miscellaneous areas. Such areas have little or no soil
material and support little or no vegetation. Rock outcrop is an example.
12
Custom Soil Resource Report
Union County, North Carolina
ChA—Chewacla silt loam, 0 to 2 percent slopes, frequently flooded
Map Unit Setting
National map unit symbol: 3wOp
Elevation: 200 to 1,400 feet
Mean annual precipitation: 37 to 60 inches
Mean annual air temperature: 59 to 66 degrees F
Frost -free period: 200 to 240 days
Farmland classification: Prime farmland if drained and either protected from flooding
or not frequently flooded during the growing season
Map Unit Composition
Chewacla and similar soils: 87 percent
Minor components: 13 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Chewacla
Setting
Landform: Flood plains
Down -slope shape: Concave
Across -slope shape: Linear
Parent material: Loamy alluvium derived from igneous and metamorphic rock
Typical profile
A - 0 to 4 inches: silt loam
Bwl - 4 to 26 inches: silty clay loam
Bw2 - 26 to 38 inches: loam
Bw3 - 38 to 60 inches: clay loam
C - 60 to 80 inches: loam
Properties and qualities
Slope: 0 to 2 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Somewhat poorly drained
Runoff class: Low
Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high
(0.57 to 1.98 in/hr)
Depth to water table: About 6 to 24 inches
Frequency of flooding: NoneFrequent
Frequency of ponding: None
Available water supply, 0 to 60 inches: High (about 11.5 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 4w
Hydrologic Soil Group: B/D
Hydric soil rating: No
Minor Components
Congaree
Percent of map unit. 8 percent
Landform: Flood plains
13
Custom Soil Resource Report
Down -slope shape: Linear
Across -slope shape: Linear
Hydric soil rating: No
Wehadkee, undrained
Percent of map unit. 5 percent
Landform: Depressions on flood plains
Down -slope shape: Concave
Across -slope shape: Linear
Hydric soil rating: Yes
GsE—Goldston-Badin complex, 15 to 45 percent slopes
Map Unit Setting
National map unit symbol: 3wl 3
Elevation: 200 to 650 feet
Mean annual precipitation: 37 to 60 inches
Mean annual air temperature: 59 to 66 degrees F
Frost -free period: 200 to 240 days
Farmland classification: Not prime farmland
Map Unit Composition
Goldston and similar soils: 55 percent
Badin and similar soils: 30 percent
Minor components: 5 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Goldston
Setting
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Parent material: Residuum weathered from metavolcanics and/or argillite
Typical profile
A - 0 to 7 inches: very channery silt loam
Bw - 7 to 11 inches: very channery silt loam
Cr - 11 to 23 inches: weathered bedrock
R - 23 to 80 inches: unweathered bedrock
Properties and qualities
Slope: 15 to 45 percent
Depth to restrictive feature: 10 to 20 inches to paralithic bedrock; 20 to 40 inches
to lithic bedrock
Drainage class: Well drained
Runoff class: High
Capacity of the most limiting layer to transmit water (Ksat): Very low to high (0.00
to 1.98 in/hr)
14
Custom Soil Resource Report
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water supply, 0 to 60 inches: Very low (about 1.2 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 7s
Hydrologic Soil Group: D
Hydric soil rating: No
Description of Badin
Setting
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Parent material: Residuum weathered from metavolcanics and/or argillite
Typical profile
A - 0 to 2 inches: channery silt loam
E - 2 to 9 inches: channery silt loam
Bt1 - 9 to 21 inches: channery silty clay loam
Bt2 - 21 to 36 inches: silty clay
Cr - 36 to 45 inches: weathered bedrock
R - 45 to 80 inches: unweathered bedrock
Properties and qualities
Slope: 15 to 45 percent
Depth to restrictive feature: 20 to 40 inches to paralithic bedrock; 40 to 80 inches
to lithic bedrock
Drainage class: Well drained
Runoff class: High
Capacity of the most limiting layer to transmit water (Ksat):
to 1.98 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water supply, 0 to 60 inches: Moderate (about 6.'
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 6e
Hydrologic Soil Group: C
Hydric soil rating: No
Minor Components
Tarrus
Percent of map unit. 5 percent
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Very low to high (0.00
inches)
15
Custom Soil Resource Report
Hydric soil rating: No
TbB2—Tarrus gravelly silty clay loam, 2 to 8 percent slopes, moderately
eroded
Map Unit Setting
National map unit symbol. 2mx8q
Elevation: 200 to 1,400 feet
Mean annual precipitation: 37 to 60 inches
Mean annual air temperature: 59 to 66 degrees F
Frost -free period: 200 to 240 days
Farmland classification: All areas are prime farmland
Map Unit Composition
Tarrus, moderately eroded, and similar soils: 85 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Tarrus, Moderately Eroded
Setting
Landform: I me rfluves
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Convex
Parent material: Residuum weathered from schist and/or other metamorphic rock
Typical profile
Ap - 0 to 6 inches: gravelly silty clay loam
Bt - 6 to 45 inches: silty clay
Cr - 45 to 80 inches: weathered bedrock
Properties and qualities
Slope: 2 to 8 percent
Depth to restrictive feature: 40 to 60 inches to paralithic bedrock
Drainage class: Well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat): Very low to high (0.00
to 1.98 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water supply, 0 to 60 inches: Low (about 4.5 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2e
Hydrologic Soil Group: B
Hydric soil rating: No
it.
Flood Map:
National Flood Hazard Layer FI RMette *FEMA
Legend
8Oo41'30"W 34o58'46"N SEE FIS REPORT FOR DETAILED LEGEND AND INDEX MAP FOR FIRM PANEL LAYOUT
I.V,VVV
0 250 500 1,000 1,500 2,000
Basemap: USGS National Map: Orthoimagery: Data refreshed October, 2020
Without Base Flood Elevation (BFE)
Zone A, V, A99
SPECIAL FLOOD Wit
hBFE orDepthZoneAE,AD,AH,Ve,Aa
HAZARD AREAS Regulatory Floodway
OTHER AREAS OF
FLOOD HAZARD
0.2% Annual Chance Flood Hazard, Areas
of 1% annual chance flood with average
depth less than one foot or with drainage
areas of less than one square mile Zonex
Future Conditions 1% Annual
4 '- Chance Flood Hazard Zonex
"Area with Reduced Flood Risk due to
Levee. See Notes. Zonex
" Area with Flood Risk due to Leveezone D
NOSCREEN Area of Minimal Flood Hazard
Q Effective LOMRs
OTHER AREAS Area of Undetermined Flood Hazard
GENERAL - — - - Channel, Culvert, or Storm Sewer
STRUCTURES IIIIIII Levee, Dike, or Floodwall
e zo.z Cross Sections with 1% Annual Chance
17.5 Water Surface Elevation
a - - - Coastal Transect
—sfa— Base Flood Elevation Line (BFE)
Limit of Study
Jurisdiction Boundary
— --- Coastal Transect Baseline
OTHER
_ Profile Baseline
FEATURES
Hydrographic Feature
Digital Data Available AN
El No Digital Data Available
MAP PANELS
El Unmapped
QThe
pin displayed on the map is an approximate
point selected by the user and does not represent
an authoritative property location.
This map complies with FEMA's standards for the use of
digital flood maps if it is not void as described below.
The basemap shown complies with FEMA's basemap
accuracy standards
The flood hazard information is derived directly from the
authoritative NFHL web services provided by FEMA. This map
was exported on 2/23/2022 at 9:34 AM and does not
reflect changes or amendments subsequent to this date and
time. The NFHL and effective information may change or
become superseded by new data overtime.
This map image is void if the one or more of the following map
elements do not appear: basemap imagery, flood zone labels,
legend, scale bar, map creation date, community identifiers,
FIRM panel number, and FIRM effective date. Map images for
unmapped and unmodernized areas cannot be used for
regulatory purposes.
Erosion Control Calculations:
\\\
77
1 /1 I I Al � I� I — ❑ � �
��/� l \�—\\IIIII IIII��I I \ \ � . — — ___—_ _ . _ �i \// / ❑ / ///// � \-` \ \ I l
- \�\
/ / / _ \\\\\\\��\���\\ \ \ \ \ .—•—��_�l••• .X x %"��ik k�k \\ � � � � � / �� � k X� x X X� I � I I\ I X • k \
_ k
/ \ ��A \• • k k/ • . . . -71
A'
_ V A❑\ �TT_��A\\ VA ti lx / ❑ /
l-k
\\ \ � \ /� 1 \// �i%%Il Ijl'11 \•�� \ \ 1 / -, I k k kk�•'❑\��'10 ��'• .. • k"' k / / l / 11
k h • /
9
1 / / ❑ / i i // ii%// �// / � � `y V � �' — � • — ._�vvv � � � // � k �. ...:. � , ��J�� •�•.'.'. ��� � � / � / / I
/ / / // � / / / / / \ \ / /� ^•?�\\\ \ �\ �k X X-k,V'` Y \ \ \ \ \ \/ / '�• X k. k,\. .. � •\ / h k / / • / l I I
\ \ \ •mot kX
/ \ \ //-1\\ \ \ \ / // / \\\ \\\\\ \• _1' /-/•-`.� x\V• k..✓�/�,��I � •--\\� \\\ x ••'''' 'k / l 11 /
T
/
v A ' v v I I / . , � � ' � � � ^x v� � -x • h x x � / �_ — — �_— � ��� -. ,� % ' �\V\�� �. X � / /
/ / \ / \ � \ \ +. .� \ \\\ S— ,.-./ // !/%'/�`\\ „ram. :_., y -. \ \ x k X• l
r-i�r�
573
/ I \ 1 — / \ \ _ � 563 / � \ / • /• / / I --// // l Iv v--.—�-- ❑ v V1 II � // // ' II 570 // SB5
I �_- \v V 1111.'.I•.Iti / � •� / I / I I
I I
562 / / — III / I' , I-, ' • /x / / � ' / /
DA:1.33AC
Sao
-_ v / I / / / � \ \ � VA \ v v v 575 � �- i A I I l l I�lp • I I � �• � I / / / , / / �
590 580 — / I I I I / IIl l•lI•l,l �' l / / / /
\ \� �..V A o `n 563 VA \\ \ \ _ — — — r / / �lll J� :• l I / / / / / /
SB-4 / — / — — / /��///•/%�////-./
SB-3 DA' 2.14 AC ��
DA' 1.42AC
'� / / ❑ / / / / /
SB-2 /// // / / //A v /� // / / / //
\ \ \ \ 1 DA: 4.22 AC / / / / /� / / i/
� / � \ \v v � 1 / 1 \\v—� 111 / / /� � v / //�///✓❑// � / / / � l l /
DA' 2.82AC1 I I l \ 1 /// / / / / \ \\ _ 'C / / / //��i/i�/•/ �• / / / \ \ \ I I I /
I _\ \ \ — \---- - _— //, ! ///�////k• � / / /jam \ \ ❑ \ \ \ \ I
lo
/ / v v \ \ \ I \ \ \ \ ❑ S B-7 5851
/
DA: 1
.11 AC
575 //�� .'❑ v vv❑ v v v
585
i�
/ / / v � I \ \ o � � II Il � 585 / / , / / _ � — i/,/// / �. ... k k � � I l / / / / v v v A v vvv ❑ v v�
—' / / --- � � V A � � \ \ V A A \ \ VA 1. \. � __�,// �.�,',•� � / I \ \ vvv
El` \ \ /
/ \ \ \ \
\v A \ V A\
SB-6
DA- 3.64ACv v v\ III v• / I I 1 1 1 / l I i
575 1 I;�/ -/ 1. I / I I 1 ❑ //
571//
9, 585 �;1 v--___; v ❑ \\ /
SOP°--
44)
1vv vv❑v�VA\ V A I
I I / I II I 1 I I I � / � � �- I I .'• / v A �/� ;,/ � vvv AVA\�V��\\\ V �V A \ �-v• I / / / / /
l I / � I I I I I I 1 1 1 x -� �� _ ----vv / ////_ __--� ❑AV �\ � \\��\ \ \ \ \ v I �vv— � / � V I 1 A
� I _, — � v / / / ---� A\ VAVA\\\ V�\ \ \ \ V A I I ❑ v v v �v
/ I I I II � I \ \\ I // v V 1 // I ��,—� \❑ —/// / /,-- � \\I II1�`�IIIIVA\\A❑\•\\I��\ V 1 ' V � v vv
l I I 1 I � / � (� '-, \ \ // / 1 I I I �I II I��\VAS❑� \\ \ \ V 1 V � vv
\\
AA\��
v v � I I v A v� 1 / � � � I v v \vvvvv v ❑ _ ������,�� v v v �� =-_ _ ❑ vv`i w�lii°ilw
1\II�VAIIIIIjIIII I�I
NOTES:
1. SEE SHEET ### FOR CONSTRUCTION SEQUENCE AND SHEETS
C518 - C529 FOR EROSION CONTROL NOTES AND DETAILS.
2. EROSION CONTROL PLANS SHALL NOT BE USED FOR FINAL
GRADING. SEE CHAPTER 5 FOR FINAL GRADING PLAN.
3. SEE CHAPTER 6 FOR STORM DRAINAGE PLANS.
4. SEE CHAPTER 7 FOR UTILITY PLANS.
5. LIMITS OF CONSTRUCTION/ CLEARING LIMITS: 25.98 AC
LEGEND:
DRAINAGE AREA LIMITS (SEDIMENT BASIN)
r
DRAINAGE AREA LIMITS (SILT FENCE)
L
LIMITS OF CONSTRUCTION/
CLEARING LIMITS
--p
SKIMMER ATTACHMENT (NCDEQ #6.64)
BAFFLE (NCDEQ #6.65)
PROP. R/W
STORM DRAINAGE
TEMPORARY SILT FENCE (NCDEQ #6.62)
DOUBLE ROW HIGH HAZARD
TEMPORARY SILT FENCE
®
SPECIAL SEDIMENT CONTROL
FENCE (NCDOT #1606.01)
TEMP. CONSTRUCTION
ENTRANCE/EXIT (NCDEQ #6.06)
TD->
TEMP. DIVERSION DITCH
(NCDEQ #6.20)
_
ROCK CHECK DAM
(NCDEQ #6.63)
SLOPE DRAIN (NCDEQ #6.32)
TEMPORARY WETLAND MUD
MAT CROSSING
L,.ndDesjl,m-
223 NORTH GRAHAM STREET
CHARLOTTE, NC 28202
704.333.0325
WWW.LANDDESIGN.COM
KEY MAP
SEAL
NOT FOR
CONSTRUCTION
PROJECT
THE BLUFFS AT
WESLEY CHAPEL
JONES HOMES USA
UNION COUNTY
NORTH CAROLINA
LANDDESIGN PROJ.#
1021119
REVISION / ISSUANCE
NO.
DESC��!RIIP��T%%ION
DATE
11
LM�S"U�N�ITTA T
0202=21
2
REVISED PER UNION
COUNTY
07/15/2021
3
REVISED LOT LAYOUT
AND COUNT
09/30/2021
DESIGNED BY: CJC
DRAWN BY: CJC
CHECKED BY: MG
SCALE NORTH
VERT: N/A
HORZ: 1 "=100'
0 50' 100, 200'
SHEET TITLE
EROSION CONTROL - PHASE 1
BASIN DRAINAGE AREA MAP
2/23/202211:32AM 0*FRE5Q339TnMW NMA2002VD021 1 S(D021199P12LN IPIPHI'C®.FNMRRDDVQG ORIGINAL SHEET SIZE :24"X3i
SHEET NUMBER
EXHIBIT
\\\\�\\\\\�\"�\` 11 I\ �• \ \` \` \\ \ \\\_\\ ___ = �__��/i%/� /� 1 I \
I l IIII �I I
1
/
l IIII III111\1`I
1 II
l�Illlll \\ �-_ -- � •�/ � � // //'- / � \ � /
/ 1
�/ /I I \�\\\\III IIII • � I \ \---_ J/�_ � _ • � � ,'// � � \ /
VAAvvk��� v V ATax # 0� �-5�- 001 f x x k I I
7ve-r Cree�H ,owners ation
—_ \ \\\`\\\\\ PC. H 1 k ���. X _ I / \ \ �,•, x k/k'\�.x .4.\`•. t\Xk X / \
\�\ k X _ � �x X x rG. !/' TJ . ` 1\ k k k• / \ > II
zz
— / \ \\ \ \\ \ \\ \ �_ �k k k . k k Xk k.. , /fi � j/ / / \ (\ k�Yi�5�5t�' , \• / \\ `\ • ' • ' '.`\ \ \ \ � / /
Tax #06-051-00�
Bshire Homeow Associa ion
\ \ \-_ \�\�\\\\\\�;7• x k '% /// Db. 3032, P 238
ks
\ \ \\ -- \ ` \ ������'•� �1/ � � •XX. ... , ,fin; l /• •\\...�X / / /
\ \ � I � I � \ I fi 1'(\r I / � •k X X/• �. .Y \ I. .I.'.� X k l /
\ x k
\ \ \ / // / /�////j/i ii,, I.I •) ik\� \\V� I \ - � � X �k�•k.•• • .. , \ �a �Q�y I ✓ • �•• •.% � / l / /
/i// // // %\�, , _ - IL
..::`\ ��\ �kkk k � // // l cn
I(/Db.
/ / / // /// � / / / L / �— \ \\ \\� /// �-= �� _\ ��X x k X .k \ . — — — � / — ' •�� � k k k �x `` \• •�•\\ �,•••,•'••/k / / /• / l I
/ / // / < I // —• \ \\ \ /�, /�\' A2- x X _—T• k ' - • \ ` - k - \x.. �\, \ • k X / I
/ Tax o6 1 /
Rober & R6berta Dal
121 Billy/Howe Rd/ l
/ / --\ / / \ \\\ �� ///" �/ ,—_— \%\\ kx xkX ���;—~�`— \ x kX� �� X• / Db.
Db. 80 5 PJ.
\ / j��-�i�\ '� \ k x x x k k r• _�'_„� k � ��"i/iii•l=. — ✓ � x �X X • \\ `
\ \\\� /� / II / \ \\ \\ °�� \ �\ \ IIII I ((/ �•��`��•� � — J����.,/. �..�r y._ � �. v��,��,,_=1` ' \ k k k l / / � /
_ I
_" � �.. �•\����y//yam ' •� %. - - , � � � / / / � / /
\\IIII I �`�-�. •. / � / / / / /
Iwo
„E.
/ /\ NI�
\ \ - — / � —-- \ ! W,�(l((�II/I Yjl l �/� ./i / I I / , I I 1 \\\\� %/ I I � � 1 � •. ,• � �.�• •. � / / � \ / / l / /
- / x / —r I ✓ — \ � , .��\ IIII �Ao�o� I � I � ��E I I � 1 � � � , .; ( � / � / / / / /
\ / James) Austin Tax # 0 051-004AI
\ .°
_ _
— — — _
\,5318 Bla"k 0 k Ln/ / — l N�JSVG To hip Farmsl LLC
DB 1512 PGC1148 // — r _:..� \ \ / / Db. 1 //d2,
s� I
PC C bite 63�
%
ot—T/ / / / — 1\,1\IIIIII �I�Illllll i •°.�,/ / ��/— I �\ \ I I _,w' \ \ /�// \/// 1j / �k Jt� // / // / / / / / / //
- I Tax 06-�54=720 / / / / \ / �•'. .
Ma\�khew �An_drea sin / I � A \�L- 1 � / / III 1 ( v _ I = Ate / /'� i� •'� '�i��� / , ' // // / / v l l / / / /
5317' flack o��n
--_-- \— —\ \ZP644�436 % g�. I� -� ��/// / I/ /A
/ / � L � - a / ��••/ �.� / ' \ I / /
\Lot 6
Tax #�6— 054-17 9
I _ John Androm
/ 5�10-Block Oak Ln BMP-2
-_- I- // i •/, , / // r \\ \\ \\ \\\\\ \ 1
DB 46 PG 405 — f / '� -
/ Pc c� o \ `� — I-J -�J/ I`- DA: 12`64AC-
l \ Lot 5 � �'f. _ \ I \I I ///�/ii � _ °,._ ��� i/� .�•l�� II � � // / \\ \\�\� \ ` \\ \
6-0- Barry & Phyllis ChapmTax ,� 0\ I ®,
/%—
\v\ \\\VvA\ \\
anOak Hill Plo ytion 5306 Block Oan �F1e 60 / PC. 7 � le 630 v
v \\ v
S 1 S i
5
I— —
/ / \ IL o t 4
/ rax # k-054-118
/ I kret d Emma l Efire
/ I DB 51550o tack oaf Ln v V A t ) )
96 PG Fite 61 f25 \ 1�
\ \ \ \ \ \ II / / / / /
/ Pc C 0 /
Lot/3
I I ToT # 061054-116 /
\ Robert & Ga riella Goo loe 2-9
5 12 et ck oak L� I
JB 5603 PG 106 /
-7
PC C rile 630 l
1
TI x # 01 054-11 aM®° / �1 °•®°), I — A \
y Mar i Betts / I I �/`�/ / \\\
52b8gl"kOckLl / � ��i ///\A�1\VA
l II II 1 DBE 6584�PG 158 ®„ ♦ \ I / / �/ \ \\\� // ,— \ \ I I IIIII�III 1\\\�\\� \ \I \ \ 1 \ \\
P� C Fib 63o
\�
Lot\1 \ j ' _ \\ \ \ \ T\x \`�\\\ I \
c� �C 06 054 � 36 A�\�
Tax # 6-05\4-114e 1 Pax�Ovi
iar� ne 4ssocia�Ton
\ ere & itnt n V A V A V Db Q 2� T�
vv ) I I \I 5�04B d P01k L � ! l \ \ \ \V AAV `� v ` -- _ \ \ V `VAI�\Il�llll�l
PT C /-ite k3o I 1 \ \\ \ \ v v v v A \ v
NOTES:
1. SEE SHEET ### FOR CONSTRUCTION SEQUENCE AND SHEETS
C518 - C529 FOR EROSION CONTROL NOTES AND DETAILS.
2. EROSION CONTROL PLANS SHALL NOT BE USED FOR FINAL
GRADING. SEE CHAPTER 5 FOR FINAL GRADING PLAN.
3. SEE CHAPTER 6 FOR STORM DRAINAGE PLANS.
4. SEE CHAPTER 7 FOR UTILITY PLANS.
5. LIMITS OF CONSTRUCTION/ CLEARING LIMITS: 25.98 AC
LEGEND:
DRAINAGE AREA LIMITS (BMP)
DRAINAGE AREA LIMITS (SILT FENCE)
LIMITS OF CONSTRUCTION/
CLEARING LIMITS
PROP. R/W
STORM DRAINAGE
TEMPORARY SILT FENCE (NCDEQ #6.62)
DOUBLE ROW HIGH HAZARD
TEMPORARY SILT FENCE
® SPECIAL SEDIMENT CONTROL
FENCE (NCDOT #1606.01)
TEMP. CONSTRUCTION
ENTRANCE/EXIT (NCDEQ #6.06)
INLET PROTECTION O❑
(NCDEQ #6.51)
L,.ndDesjl,m-
223 NORTH GRAHAM STREET
CHARLOTTE, NC 28202
704.333.0325
WWW.LANDDESIGN.COM
KEY MAP
SEAL
NOT FOR
CONSTRUCTION
PROJECT
THE BLUFFS AT
WESLEY CHAPEL
JONES HOMES USA
UNION COUNTY
NORTH CAROLINA
LANDDESIGN PROJ.#
1021119
REVISION / ISSUANCE
NO.
DESC��!RIIP��T%%ION
DATE
11
LM�S �N�ITTA T
0202 H21
2
REVISED PER UNION
COUNTY
07/15/2021
3
REVISED LOT LAYOUT
AND COUNT
09/30/2021
DESIGNED BY: CJC
DRAWN BY: CJC
CHECKED BY: MG
SCALE NORTH
VERT: N/A
HORZ: 1 "=100'
0 50' 100, 200'
SHEET TITLE
EROSION CONTROL - PHASE 2
BASIN DRAINAGE AREA MAP
2/23/202211:29AM 0*FRSQ339TI1M NMA2QQ2n(D0211S(D021199P12LN IPIP[22D&AVMRRDDVQG
ORIGINAL SHEET SIZE: 24" X 3
SHEET NUMBER
EXHIBIT
Sediment Basin Calculations:
Sediment Basin Design
Project: The Bluffs at Wesley Chapel
Location: Union County
Developer: Jones Homes USA
Design Criteria:
Design Storm
Rational Runoff Coeff.
Intensity
10 yr
7.49 in/hr (Tc= 5 min.)
Computed By: CJC
Checked By: MLG
Settling Efficiency Criteria:
Design Storm
Rational Runoff Coeff.
Intensity
Date: 1 / 12/2022
Revised:
2 yr
5.86 in/hr (Tc= 5 min.)
Basin
Number
Drainage
Area (Acres)
Denuded
Area (Acres)
Sediment Basin
Volume
Required Provided
Bottom
Area
Sq ft
Depth
ft.
Top
Area
Sq ft
Surface
Area
Required
Sq ft
Side-
slope
Skimmer
Size
(inches)
Orifice
Diameter
(inches)
Dewatering
Time
(days)
10-yr
Flow
cfs
SB-1
2.82
2.82
5,076
20,647
3,405
4
7,107
6,432
3
3.0
2.50
2.86
14.79
SB-2
4.22
4.22
7,596
29,802
5,329
4
9,738
9,625
3
4.0
2.80
3.29
22.13
SB-3
1.42
1.42
2,556
8,693
1,024
4
3,512
3,239
3
2.0
1.80
2.32
7.45
SB-4
2.14
2.14
3,852
13,246
2,128
4
4,919
4,881
3
2.5
2.10
2.60
11.22
SB-5
1.33
1.33
2,394
33,930
6,342
4
10,776
3,033
3
4.0
3.00
3.26
6.97
S5-6
3.64
3.64
6,552
25,400
3,512
4
8,341
8,302
3
3.0
2.80
2.81
19.08
SB-7
1.11
1.11
1,998
6,627
692
4
2,855
2,532
3
2.0
1.60
2.24
5.82
Calculate Skimmer Size
Basin Volume in Cubic Feet
Days to Drain*
NC assume 3 days to drain
20 647 Cu. Ft
3 Days
SB-1
Skimmer Size
Orifice Radius
Orifice Diameter
3.0 Inch
1.3 Inch[es]
2.5 Inch[es]
Calculate Skimmer Size
Basin Volume in Cubic Feet
Days to Drain*
NC assume 3 days to drain
29 802 Cu. Ft
3 Days
S B-2
Skimmer Size
Orifice Radius
Orifice Diameter
4.0 Inch
1.4 Inch[es]
2.8 Inch[es]
Calculate Skimmer Size
Basin Volume in Cubic Feet
Days to Drain*
NC assume 3 days to drain
8 693 Cu. Ft
3 Days
S B-3
Skimmer Size
Orifice Radius
Orifice Diameter
2.0 Inch
0.9 Inch[es]
1.8 Inch[es]
Calculate Skimmer Size
Basin Volume in Cubic Feet
Days to Drain*
NC assume 3 days to drain
13 246 Cu. Ft
3 Days
Skimmer Size
Orifice Radius
Orifice Diameter
2.5 Inch
1.1 Inch[es]
2.1 Inch[es]
Calculate Skimmer Size
Basin Volume in Cubic Feet
Days to Drain*
NC assume 3 days to drain
33 930 Cu. Ft
3 Days
S B-5
Skimmer Size
Orifice Radius
Orifice Diameter
4.0 Inch
1.5 Inch[es]
3.0 Inch[es]
Calculate Skimmer Size
Basin Volume in Cubic Feet
Days to Drain*
NC assume 3 days to drain
25 400 Cu. Ft
3 Days
Skimmer Size
Orifice Radius
Orifice Diameter
3.0 Inch
1.4 Inch[es]
2.8 Inch[es]
Calculate Skimmer Size
Basin Volume in Cubic Feet
Days to Drain*
NC assume 3 days to drain
6 627 Cu. Ft
3 Days
S B-7
Skimmer Size
Orifice Radius
Orifice Diameter
2.0 Inch
0.8 Inch[es]
1.6 Inch[es]
Temporary Slope Drain Calculations:
SB-1A Temp Slope Drain
Project Description
Friction Method
Solve For
Manning
Formula
Normal Depth
Input Data
Roughness Coefficient
Channel Slope
Diameter
Discharge
0.024
0.333 ft/ft
15.0 in
13.11 cfs
Results
Normal Depth
8.8 in
Flow Area
0.7 ftz
Wetted Perimeter
2.2 ft
Hydraulic Radius
4.1 in
Top Width
1.23 ft
Critical Depth
14.7 in
Percent Full
58.7 %
Critical Slope
0.126 ft/ft
Velocity
17.51 ft/s
Velocity Head
4.76 ft
Specific Energy
5.50 ft
Froude Number
3.958
Maximum Discharge
21.72 cfs
Discharge Full
20.19 cfs
Slope Full
0.140 ft/ft
Flow Type
Supercritical
GVF Input Data
Downstream Depth
0.0 in
Length
0.0 ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.0 in
Profile Description
N/A
Profile Headloss
0.00 ft
Average End Depth Over Rise
0.0 %
Normal Depth Over Rise
58.7 %
Downstream Velocity
Infinity ft/s
Upstream Velocity
Infinity ft/s
Normal Depth
8.8 in
Critical Depth
14.7 in
Channel Slope
0.333 ft/ft
Critical Slope
0.126 ft/ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Sediment Basins Temp Pipes - The Bluffs.fm8 Center [10.03.00.03]
1/26/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1
Watertown, CT 06795 USA + 1 -203-755-1666
SB-2A Temp Slope Drain
Project Description
Friction Method
Solve For
Manning
Formula
Normal Depth
Input Data
Roughness Coefficient
Channel Slope
Diameter
Discharge
0.024
0.333 ft/ft
12.0 in
1.05 cfs
Results
Normal Depth
2.5 in
Flow Area
0.1 ftz
Wetted Perimeter
0.9 ft
Hydraulic Radius
1.5 in
Top Width
0.81 ft
Critical Depth
5.2 in
Percent Full
20.7 %
Critical Slope
0.020 ft/ft
Velocity
8.91 ft/s
Velocity Head
1.23 ft
Specific Energy
1.44 ft
Froude Number
4.122
Maximum Discharge
11.98 cfs
Discharge Full
11.14 cfs
Slope Full
0.003 ft/ft
Flow Type
Supercritical
GVF Input Data
Downstream Depth
0.0 in
Length
0.0 ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.0 in
Profile Description
N/A
Profile Headloss
0.00 ft
Average End Depth Over Rise
0.0 %
Normal Depth Over Rise
20.7 %
Downstream Velocity
Infinity ft/s
Upstream Velocity
Infinity ft/s
Normal Depth
2.5 in
Critical Depth
5.2 in
Channel Slope
0.333 ft/ft
Critical Slope
0.020 ft/ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Sediment Basins Temp Pipes - The Bluffs.fm8 Center [10.03.00.03]
1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1
Watertown, CT 06795 USA + 1 -203-755-1666
SB-2B Temp Slope Drain
Project Description
Friction Method
Solve For
Manning
Formula
Normal Depth
Input Data
Roughness Coefficient
Channel Slope
Diameter
Discharge
0.024
0.333 ft/ft
15.0 in
15.15 cfs
Results
Normal Depth
9.7 in
Flow Area
0.8 ftz
Wetted Perimeter
2.3 ft
Hydraulic Radius
4.3 in
Top Width
1.20 ft
Critical Depth
14.8 in
Percent Full
64.7 %
Critical Slope
0.172 ft/ft
Velocity
18.05 ft/s
Velocity Head
5.07 ft
Specific Energy
5.87 ft
Froude Number
3.798
Maximum Discharge
21.72 cfs
Discharge Full
20.19 cfs
Slope Full
0.187 ft/ft
Flow Type
Supercritical
GVF Input Data
Downstream Depth
0.0 in
Length
0.0 ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.0 in
Profile Description
N/A
Profile Headloss
0.00 ft
Average End Depth Over Rise
0.0 %
Normal Depth Over Rise
64.7 %
Downstream Velocity
Infinity ft/s
Upstream Velocity
Infinity ft/s
Normal Depth
9.7 in
Critical Depth
14.8 in
Channel Slope
0.333 ft/ft
Critical Slope
0.172 ft/ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Sediment Basins Temp Pipes - The Bluffs.fm8 Center [10.03.00.03]
1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1
Watertown, CT 06795 USA + 1 -203-755-1666
SB-3A Temp Slope Drain
Project Description
Friction Method
Solve For
Manning
Formula
Normal Depth
Input Data
Roughness Coefficient
Channel Slope
Diameter
Discharge
0.024
0.333 ft/ft
12.0 in
1.57 cfs
Results
Normal Depth
3.0 in
Flow Area
0.2 ftz
Wetted Perimeter
1.1 ft
Hydraulic Radius
1.8 in
Top Width
0.87 ft
Critical Depth
6.4 in
Percent Full
25.4 %
Critical Slope
0.022 ft/ft
Velocity
10.02 ft/s
Velocity Head
1.56 ft
Specific Energy
1.81 ft
Froude Number
4.161
Maximum Discharge
11.98 cfs
Discharge Full
11.14 cfs
Slope Full
0.007 ft/ft
Flow Type
Supercritical
GVF Input Data
Downstream Depth
0.0 in
Length
0.0 ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.0 in
Profile Description
N/A
Profile Headloss
0.00 ft
Average End Depth Over Rise
0.0 %
Normal Depth Over Rise
25.4 %
Downstream Velocity
Infinity ft/s
Upstream Velocity
Infinity ft/s
Normal Depth
3.0 in
Critical Depth
6.4 in
Channel Slope
0.333 ft/ft
Critical Slope
0.022 ft/ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Sediment Basins Temp Pipes - The Bluffs.fm8 Center [10.03.00.03]
1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1
Watertown, CT 06795 USA + 1 -203-755-1666
SB-3B Temp Slope Drain
Project Description
Friction Method
Solve For
Manning
Formula
Normal Depth
Input Data
Roughness Coefficient
Channel Slope
Diameter
Discharge
0.024
0.333 ft/ft
12.0 in
2.78 cfs
Results
Normal Depth
4.1 in
Flow Area
0.2 ftz
Wetted Perimeter
1.2 ft
Hydraulic Radius
2.3 in
Top Width
0.95 ft
Critical Depth
8.6 in
Percent Full
34.1 %
Critical Slope
0.028 ft/ft
Velocity
11.78 ft/s
Velocity Head
2.16 ft
Specific Energy
2.50 ft
Froude Number
4.161
Maximum Discharge
11.98 cfs
Discharge Full
11.14 cfs
Slope Full
0.021 ft/ft
Flow Type
Supercritical
GVF Input Data
Downstream Depth
0.0 in
Length
0.0 ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.0 in
Profile Description
N/A
Profile Headloss
0.00 ft
Average End Depth Over Rise
0.0 %
Normal Depth Over Rise
34.1 %
Downstream Velocity
Infinity ft/s
Upstream Velocity
Infinity ft/s
Normal Depth
4.1 in
Critical Depth
8.6 in
Channel Slope
0.333 ft/ft
Critical Slope
0.028 ft/ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Sediment Basins Temp Pipes - The Bluffs.fm8 Center [10.03.00.03]
1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1
Watertown, CT 06795 USA + 1 -203-755-1666
SB-4A Temp Slope Drain
Project Description
Friction Method
Solve For
Manning
Formula
Normal Depth
Input Data
Roughness Coefficient
Channel Slope
Diameter
Discharge
0.024
0.333 ft/ft
12.0 in
8.76 cfs
Results
Normal Depth
8.0 in
Flow Area
0.6 ftz
Wetted Perimeter
1.9 ft
Hydraulic Radius
3.5 in
Top Width
0.94 ft
Critical Depth
11.9 in
Percent Full
66.8 %
Critical Slope
0.190 ft/ft
Velocity
15.71 ft/s
Velocity Head
3.84 ft
Specific Energy
4.50 ft
Froude Number
3.600
Maximum Discharge
11.98 cfs
Discharge Full
11.14 cfs
Slope Full
0.206 ft/ft
Flow Type
Supercritical
GVF Input Data
Downstream Depth
0.0 in
Length
0.0 ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.0 in
Profile Description
N/A
Profile Headloss
0.00 ft
Average End Depth Over Rise
0.0 %
Normal Depth Over Rise
66.8 %
Downstream Velocity
Infinity ft/s
Upstream Velocity
Infinity ft/s
Normal Depth
8.0 in
Critical Depth
11.9 in
Channel Slope
0.333 ft/ft
Critical Slope
0.190 ft/ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Sediment Basins Temp Pipes - The Bluffs.fm8 Center [10.03.00.03]
1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1
Watertown, CT 06795 USA + 1 -203-755-1666
SB-5A Temp Slope Drain
Project Description
Friction Method
Solve For
Manning
Formula
Normal Depth
Input Data
Roughness Coefficient
Channel Slope
Diameter
Discharge
0.024
0.333 ft/ft
12.0 in
0.37 cfs
Results
Normal Depth
1.5 in
Flow Area
0.1 ftz
Wetted Perimeter
0.7 ft
Hydraulic Radius
0.9 in
Top Width
0.66 ft
Critical Depth
3.0 in
Percent Full
12.5 %
Critical Slope
0.019 ft/ft
Velocity
6.55 ft/s
Velocity Head
0.67 ft
Specific Energy
0.79 ft
Froude Number
3.950
Maximum Discharge
11.98 cfs
Discharge Full
11.14 cfs
Slope Full
0.000 ft/ft
Flow Type
Supercritical
GVF Input Data
Downstream Depth
0.0 in
Length
0.0 ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.0 in
Profile Description
N/A
Profile Headloss
0.00 ft
Average End Depth Over Rise
0.0 %
Normal Depth Over Rise
12.5 %
Downstream Velocity
Infinity ft/s
Upstream Velocity
Infinity ft/s
Normal Depth
1.5 in
Critical Depth
3.0 in
Channel Slope
0.333 ft/ft
Critical Slope
0.019 ft/ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Sediment Basins Temp Pipes - The Bluffs.fm8 Center [10.03.00.03]
1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1
Watertown, CT 06795 USA + 1 -203-755-1666
SB-5B Temp Slope Drain
Project Description
Friction Method
Solve For
Manning
Formula
Normal Depth
Input Data
Roughness Coefficient
Channel Slope
Diameter
Discharge
0.024
0.333 ft/ft
12.0 in
4.56 cfs
Results
Normal Depth
5.4 in
Flow Area
0.3 ftz
Wetted Perimeter
1.5 ft
Hydraulic Radius
2.8 in
Top Width
0.99 ft
Critical Depth
10.7 in
Percent Full
44.6 %
Critical Slope
0.050 ft/ft
Velocity
13.46 ft/s
Velocity Head
2.82 ft
Specific Energy
3.26 ft
Froude Number
4.066
Maximum Discharge
11.98 cfs
Discharge Full
11.14 cfs
Slope Full
0.056 ft/ft
Flow Type
Supercritical
GVF Input Data
Downstream Depth
0.0 in
Length
0.0 ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.0 in
Profile Description
N/A
Profile Headloss
0.00 ft
Average End Depth Over Rise
0.0 %
Normal Depth Over Rise
44.6 %
Downstream Velocity
Infinity ft/s
Upstream Velocity
Infinity ft/s
Normal Depth
5.4 in
Critical Depth
10.7 in
Channel Slope
0.333 ft/ft
Critical Slope
0.050 ft/ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Sediment Basins Temp Pipes - The Bluffs.fm8 Center [10.03.00.03]
1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1
Watertown, CT 06795 USA + 1 -203-755-1666
SB-6A Temp Slope Drain
Project Description
Friction Method
Solve For
Manning
Formula
Normal Depth
Input Data
Roughness Coefficient
Channel Slope
Diameter
Discharge
0.024
0.333 ft/ft
15.0 in
12.43 cfs
Results
Normal Depth
8.5 in
Flow Area
0.7 ftz
Wetted Perimeter
2.1 ft
Hydraulic Radius
4.0 in
Top Width
1.24 ft
Critical Depth
14.6 in
Percent Full
56.7 %
Critical Slope
0.112 ft/ft
Velocity
17.30 ft/s
Velocity Head
4.65 ft
Specific Energy
5.36 ft
Froude Number
4.004
Maximum Discharge
21.72 cfs
Discharge Full
20.19 cfs
Slope Full
0.126 ft/ft
Flow Type
Supercritical
GVF Input Data
Downstream Depth
0.0 in
Length
0.0 ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.0 in
Profile Description
N/A
Profile Headloss
0.00 ft
Average End Depth Over Rise
0.0 %
Normal Depth Over Rise
56.7 %
Downstream Velocity
Infinity ft/s
Upstream Velocity
Infinity ft/s
Normal Depth
8.5 in
Critical Depth
14.6 in
Channel Slope
0.333 ft/ft
Critical Slope
0.112 ft/ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Sediment Basins Temp Pipes - The Bluffs.fm8 Center [10.03.00.03]
1/26/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1
Watertown, CT 06795 USA + 1 -203-755-1666
SB-6B Temp Slope Drain
Project Description
Friction Method
Solve For
Manning
Formula
Normal Depth
Input Data
Roughness Coefficient
Channel Slope
Diameter
Discharge
0.024
0.333 ft/ft
12.0 in
3.93 cfs
Results
Normal Depth
4.9 in
Flow Area
0.3 ftz
Wetted Perimeter
1.4 ft
Hydraulic Radius
2.6 in
Top Width
0.98 ft
Critical Depth
10.1 in
Percent Full
41.0 %
Critical Slope
0.040 ft/ft
Velocity
12.94 ft/s
Velocity Head
2.60 ft
Specific Energy
3.01 ft
Froude Number
4.107
Maximum Discharge
11.98 cfs
Discharge Full
11.14 cfs
Slope Full
0.041 ft/ft
Flow Type
Supercritical
GVF Input Data
Downstream Depth
0.0 in
Length
0.0 ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.0 in
Profile Description
N/A
Profile Headloss
0.00 ft
Average End Depth Over Rise
0.0 %
Normal Depth Over Rise
41.0 %
Downstream Velocity
Infinity ft/s
Upstream Velocity
Infinity ft/s
Normal Depth
4.9 in
Critical Depth
10.1 in
Channel Slope
0.333 ft/ft
Critical Slope
0.040 ft/ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Sediment Basins Temp Pipes - The Bluffs.fm8 Center [10.03.00.03]
1/26/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1
Watertown, CT 06795 USA + 1 -203-755-1666
SB-7A Temp Slope Drain
Project Description
Friction Method
Solve For
Manning
Formula
Normal Depth
Input Data
Roughness Coefficient
Channel Slope
Diameter
Discharge
0.024
0.333 ft/ft
12.0 in
4.19 cfs
Results
Normal Depth
5.1 in
Flow Area
0.3 ftz
Wetted Perimeter
1.4 ft
Hydraulic Radius
2.7 in
Top Width
0.99 ft
Critical Depth
10.4 in
Percent Full
42.5 %
Critical Slope
0.043 ft/ft
Velocity
13.18 ft/s
Velocity Head
2.70 ft
Specific Energy
3.12 ft
Froude Number
4.096
Maximum Discharge
11.98 cfs
Discharge Full
11.14 cfs
Slope Full
0.047 ft/ft
Flow Type
Supercritical
GVF Input Data
Downstream Depth
0.0 in
Length
0.0 ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.0 in
Profile Description
N/A
Profile Headloss
0.00 ft
Average End Depth Over Rise
0.0 %
Normal Depth Over Rise
42.5 %
Downstream Velocity
Infinity ft/s
Upstream Velocity
Infinity ft/s
Normal Depth
5.1 in
Critical Depth
10.4 in
Channel Slope
0.333 ft/ft
Critical Slope
0.043 ft/ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Sediment Basins Temp Pipes - The Bluffs.fm8 Center [10.03.00.03]
1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1
Watertown, CT 06795 USA + 1 -203-755-1666
SB-7B Temp Slope Drain
Project Description
Friction Method
Solve For
Manning
Formula
Normal Depth
Input Data
Roughness Coefficient
Channel Slope
Diameter
Discharge
0.024
0.333 ft/ft
12.0 in
0.31 cfs
Results
Normal Depth
1.4 in
Flow Area
0.1 ftz
Wetted Perimeter
0.7 ft
Hydraulic Radius
0.9 in
Top Width
0.64 ft
Critical Depth
2.8 in
Percent Full
11.5 %
Critical Slope
0.019 ft/ft
Velocity
6.20 ft/s
Velocity Head
0.60 ft
Specific Energy
0.71 ft
Froude Number
3.901
Maximum Discharge
11.98 cfs
Discharge Full
11.14 cfs
Slope Full
0.000 ft/ft
Flow Type
Supercritical
GVF Input Data
Downstream Depth
0.0 in
Length
0.0 ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.0 in
Profile Description
N/A
Profile Headloss
0.00 ft
Average End Depth Over Rise
0.0 %
Normal Depth Over Rise
11.5 %
Downstream Velocity
Infinity ft/s
Upstream Velocity
Infinity ft/s
Normal Depth
1.4 in
Critical Depth
2.8 in
Channel Slope
0.333 ft/ft
Critical Slope
0.019 ft/ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Sediment Basins Temp Pipes - The Bluffs.fm8 Center [10.03.00.03]
1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1
Watertown, CT 06795 USA + 1 -203-755-1666
Temporary Diversion Ditch Calculations:
SB-1A Ditch
Project Description
Friction Method
Manning
Formula
Solve For
Normal Depth
Input Data
Roughness Coefficient
0.020
Channel Slope
0.034 ft/ft
Left Side Slope
3.000 H:V
Right Side Slope
3.000 H:V
Bottom Width
2.00 ft
Discharge
13.11 cfs
Results
Normal Depth
6.4 in
Flow Area
1.9 ftz
Wetted Perimeter
5.4 ft
Hydraulic Radius
4.3 in
Top Width
5.18 ft
Critical Depth
9.2 in
Critical Slope
0.008 ft/ft
Velocity
6.88 ft/s
Velocity Head
0.74 ft
Specific Energy
1.27 ft
Froude Number
2.000
Flow Type
Supercritical
GVF Input Data
Downstream Depth
0.0 in
Length
0.0 ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.0 in
Profile Description
N/A
Profile Headloss
0.00 ft
Downstream Velocity
Infinity ft/s
Upstream Velocity
Infinity ft/s
Normal Depth
6.4 in
Critical Depth
9.2 in
Channel Slope
0.034 ft/ft
Critical Slope
0.008 ft/ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Diversion Ditch Calcs - The Bluffs.fm8 Center [10.03.00.03]
1/26/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1
Watertown, CT 06795 USA + 1 -203-755-1666
SB-2A Ditch
Project Description
Friction Method
Manning
Formula
Solve For
Normal Depth
Input Data
Roughness Coefficient
0.020
Channel Slope
0.073 ft/ft
Left Side Slope
3.000 H:V
Right Side Slope
3.000 H:V
Bottom Width
2.00 ft
Discharge
1.05 cfs
Results
Normal Depth
1.3 in
Flow Area
0.3 ftz
Wetted Perimeter
2.7 ft
Hydraulic Radius
1.1 in
Top Width
2.65 ft
Critical Depth
2.2 in
Critical Slope
0.011 ft/ft
Velocity
4.14 ft/s
Velocity Head
0.27 ft
Specific Energy
0.38 ft
Froude Number
2.363
Flow Type
Supercritical
GVF Input Data
Downstream Depth
0.0 in
Length
0.0 ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.0 in
Profile Description
N/A
Profile Headloss
0.00 ft
Downstream Velocity
Infinity ft/s
Upstream Velocity
Infinity ft/s
Normal Depth
1.3 in
Critical Depth
2.2 in
Channel Slope
0.073 ft/ft
Critical Slope
0.011 ft/ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Diversion Ditch Calcs.fm8 Center [10.03.00.03]
1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1
Watertown, CT 06795 USA + 1 -203-755-1666
SB-3A Ditch
Project Description
Friction Method
Manning
Formula
Solve For
Normal Depth
Input Data
Roughness Coefficient
0.020
Channel Slope
0.043 ft/ft
Left Side Slope
3.000 H:V
Right Side Slope
3.000 H:V
Bottom Width
2.00 ft
Discharge
1.57 cfs
Results
Normal Depth
1.9 in
Flow Area
0.4 ftz
Wetted Perimeter
3.0 ft
Hydraulic Radius
1.6 in
Top Width
2.96 ft
Critical Depth
2.8 in
Critical Slope
0.010 ft/ft
Velocity
3.98 ft/s
Velocity Head
0.25 ft
Specific Energy
0.41 ft
Froude Number
1.919
Flow Type
Supercritical
GVF Input Data
Downstream Depth
0.0 in
Length
0.0 ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.0 in
Profile Description
N/A
Profile Headloss
0.00 ft
Downstream Velocity
Infinity ft/s
Upstream Velocity
Infinity ft/s
Normal Depth
1.9 in
Critical Depth
2.8 in
Channel Slope
0.043 ft/ft
Critical Slope
0.010 ft/ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Diversion Ditch Calcs.fm8 Center [10.03.00.03]
1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1
Watertown, CT 06795 USA + 1 -203-755-1666
SB-3B Ditch
Project Description
Friction Method
Manning
Formula
Solve For
Normal Depth
Input Data
Roughness Coefficient
0.020
Channel Slope
0.036 ft/ft
Left Side Slope
3.000 H:V
Right Side Slope
3.000 H:V
Bottom Width
2.00 ft
Discharge
2.78 cfs
Results
Normal Depth
2.8 in
Flow Area
0.6 ftz
Wetted Perimeter
3.5 ft
Hydraulic Radius
2.2 in
Top Width
3.38 ft
Critical Depth
4.0 in
Critical Slope
0.010 ft/ft
Velocity
4.48 ft/s
Velocity Head
0.31 ft
Specific Energy
0.54 ft
Froude Number
1.847
Flow Type
Supercritical
GVF Input Data
Downstream Depth
0.0 in
Length
0.0 ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.0 in
Profile Description
N/A
Profile Headloss
0.00 ft
Downstream Velocity
Infinity ft/s
Upstream Velocity
Infinity ft/s
Normal Depth
2.8 in
Critical Depth
4.0 in
Channel Slope
0.036 ft/ft
Critical Slope
0.010 ft/ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Diversion Ditch Calcs.fm8 Center [10.03.00.03]
1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1
Watertown, CT 06795 USA + 1 -203-755-1666
SB-4A-1 Ditch
Project Description
Friction Method
Manning
Formula
Solve For
Normal Depth
Input Data
Roughness Coefficient
0.020
Channel Slope
0.047 ft/ft
Left Side Slope
3.000 H:V
Right Side Slope
3.000 H:V
Bottom Width
2.00 ft
Discharge
8.76 cfs
Results
Normal Depth
4.8 in
Flow Area
1.3 ftz
Wetted Perimeter
4.5 ft
Hydraulic Radius
3.4 in
Top Width
4.39 ft
Critical Depth
7.4 in
Critical Slope
0.008 ft/ft
Velocity
6.89 ft/s
Velocity Head
0.74 ft
Specific Energy
1.14 ft
Froude Number
2.255
Flow Type
Supercritical
GVF Input Data
Downstream Depth
0.0 in
Length
0.0 ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.0 in
Profile Description
N/A
Profile Headloss
0.00 ft
Downstream Velocity
Infinity ft/s
Upstream Velocity
Infinity ft/s
Normal Depth
4.8 in
Critical Depth
7.4 in
Channel Slope
0.047 ft/ft
Critical Slope
0.008 ft/ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Diversion Ditch Calcs.fm8 Center [10.03.00.03]
1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1
Watertown, CT 06795 USA + 1 -203-755-1666
SB-4A-2 Ditch
Project Description
Friction Method
Manning
Formula
Solve For
Normal Depth
Input Data
Roughness Coefficient
0.020
Channel Slope
0.032 ft/ft
Left Side Slope
3.000 H:V
Right Side Slope
3.000 H:V
Bottom Width
2.00 ft
Discharge
8.76 cfs
Results
Normal Depth
5.3 in
Flow Area
1.5 ftz
Wetted Perimeter
4.8 ft
Hydraulic Radius
3.7 in
Top Width
4.64 ft
Critical Depth
7.4 in
Critical Slope
0.008 ft/ft
Velocity
6.01 ft/s
Velocity Head
0.56 ft
Specific Energy
1.00 ft
Froude Number
1.888
Flow Type
Supercritical
GVF Input Data
Downstream Depth
0.0 in
Length
0.0 ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.0 in
Profile Description
N/A
Profile Headloss
0.00 ft
Downstream Velocity
Infinity ft/s
Upstream Velocity
Infinity ft/s
Normal Depth
5.3 in
Critical Depth
7.4 in
Channel Slope
0.032 ft/ft
Critical Slope
0.008 ft/ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Diversion Ditch Calcs.fm8 Center [10.03.00.03]
1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1
Watertown, CT 06795 USA + 1 -203-755-1666
SB-4B Ditch
Project Description
Friction Method
Manning
Formula
Solve For
Normal Depth
Input Data
Roughness Coefficient
0.020
Channel Slope
0.044 ft/ft
Left Side Slope
3.000 H:V
Right Side Slope
3.000 H:V
Bottom Width
2.00 ft
Discharge
0.57 cfs
Results
Normal Depth
1.1 in
Flow Area
0.2 ftz
Wetted Perimeter
2.6 ft
Hydraulic Radius
0.9 in
Top Width
2.53 ft
Critical Depth
1.5 in
Critical Slope
0.012 ft/ft
Velocity
2.85 ft/s
Velocity Head
0.13 ft
Specific Energy
0.21 ft
Froude Number
1.784
Flow Type
Supercritical
GVF Input Data
Downstream Depth
0.0 in
Length
0.0 ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.0 in
Profile Description
N/A
Profile Headloss
0.00 ft
Downstream Velocity
Infinity ft/s
Upstream Velocity
Infinity ft/s
Normal Depth
1.1 in
Critical Depth
1.5 in
Channel Slope
0.044 ft/ft
Critical Slope
0.012 ft/ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Diversion Ditch Calcs.fm8 Center [10.03.00.03]
1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1
Watertown, CT 06795 USA + 1 -203-755-1666
SB-5A Ditch
Project Description
Friction Method
Manning
Formula
Solve For
Normal Depth
Input Data
Roughness Coefficient
0.020
Channel Slope
0.058 ft/ft
Left Side Slope
3.000 H:V
Right Side Slope
3.000 H:V
Bottom Width
2.00 ft
Discharge
0.37 cfs
Results
Normal Depth
0.8 in
Flow Area
0.1 ftz
Wetted Perimeter
2.4 ft
Hydraulic Radius
0.7 in
Top Width
2.38 ft
Critical Depth
1.2 in
Critical Slope
0.013 ft/ft
Velocity
2.67 ft/s
Velocity Head
0.11 ft
Specific Energy
0.17 ft
Froude Number
1.949
Flow Type
Supercritical
GVF Input Data
Downstream Depth
0.0 in
Length
0.0 ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.0 in
Profile Description
N/A
Profile Headloss
0.00 ft
Downstream Velocity
Infinity ft/s
Upstream Velocity
Infinity ft/s
Normal Depth
0.8 in
Critical Depth
1.2 in
Channel Slope
0.058 ft/ft
Critical Slope
0.013 ft/ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Diversion Ditch Calcs.fm8 Center [10.03.00.03]
1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1
Watertown, CT 06795 USA + 1 -203-755-1666
SB-5B Ditch
Project Description
Friction Method
Manning
Formula
Solve For
Normal Depth
Input Data
Roughness Coefficient
0.020
Channel Slope
0.075 ft/ft
Left Side Slope
3.000 H:V
Right Side Slope
3.000 H:V
Bottom Width
2.00 ft
Discharge
4.56 cfs
Results
Normal Depth
3.0 in
Flow Area
0.7 ftz
Wetted Perimeter
3.6 ft
Hydraulic Radius
2.3 in
Top Width
3.48 ft
Critical Depth
5.2 in
Critical Slope
0.009 ft/ft
Velocity
6.72 ft/s
Velocity Head
0.70 ft
Specific Energy
0.95 ft
Froude Number
2.685
Flow Type
Supercritical
GVF Input Data
Downstream Depth
0.0 in
Length
0.0 ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.0 in
Profile Description
N/A
Profile Headloss
0.00 ft
Downstream Velocity
Infinity ft/s
Upstream Velocity
Infinity ft/s
Normal Depth
3.0 in
Critical Depth
5.2 in
Channel Slope
0.075 ft/ft
Critical Slope
0.009 ft/ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Diversion Ditch Calcs.fm8 Center [10.03.00.03]
1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1
Watertown, CT 06795 USA + 1 -203-755-1666
SB-6A Ditch
Project Description
Friction Method
Manning
Formula
Solve For
Normal Depth
Input Data
Roughness Coefficient
0.020
Channel Slope
0.047 ft/ft
Left Side Slope
3.000 H:V
Right Side Slope
3.000 H:V
Bottom Width
2.00 ft
Discharge
12.43 cfs
Results
Normal Depth
5.7 in
Flow Area
1.6 ftz
Wetted Perimeter
5.0 ft
Hydraulic Radius
3.9 in
Top Width
4.85 ft
Critical Depth
8.9 in
Critical Slope
0.008 ft/ft
Velocity
7.62 ft/s
Velocity Head
0.90 ft
Specific Energy
1.38 ft
Froude Number
2.319
Flow Type
Supercritical
GVF Input Data
Downstream Depth
0.0 in
Length
0.0 ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.0 in
Profile Description
N/A
Profile Headloss
0.00 ft
Downstream Velocity
Infinity ft/s
Upstream Velocity
Infinity ft/s
Normal Depth
5.7 in
Critical Depth
8.9 in
Channel Slope
0.047 ft/ft
Critical Slope
0.008 ft/ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Diversion Ditch Calcs - The Bluffs.fm8 Center [10.03.00.03]
1/26/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1
Watertown, CT 06795 USA + 1 -203-755-1666
SB-7A Ditch
Project Description
Friction Method
Manning
Formula
Solve For
Normal Depth
Input Data
Roughness Coefficient
0.020
Channel Slope
0.034 ft/ft
Left Side Slope
3.000 H:V
Right Side Slope
3.000 H:V
Bottom Width
2.00 ft
Discharge
4.19 cfs
Results
Normal Depth
3.5 in
Flow Area
0.8 ftz
Wetted Perimeter
3.9 ft
Hydraulic Radius
2.6 in
Top Width
3.76 ft
Critical Depth
5.0 in
Critical Slope
0.009 ft/ft
Velocity
4.95 ft/s
Velocity Head
0.38 ft
Specific Energy
0.67 ft
Froude Number
1.841
Flow Type
Supercritical
GVF Input Data
Downstream Depth
0.0 in
Length
0.0 ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.0 in
Profile Description
N/A
Profile Headloss
0.00 ft
Downstream Velocity
Infinity ft/s
Upstream Velocity
Infinity ft/s
Normal Depth
3.5 in
Critical Depth
5.0 in
Channel Slope
0.034 ft/ft
Critical Slope
0.009 ft/ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Diversion Ditch Calcs.fm8 Center [10.03.00.03]
1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1
Watertown, CT 06795 USA + 1 -203-755-1666
SB-7B Ditch
Project Description
Friction Method
Manning
Formula
Solve For
Normal Depth
Input Data
Roughness Coefficient
0.020
Channel Slope
0.060 ft/ft
Left Side Slope
3.000 H:V
Right Side Slope
3.000 H:V
Bottom Width
2.00 ft
Discharge
0.31 cfs
Results
Normal Depth
0.7 in
Flow Area
0.1 ftz
Wetted Perimeter
2.4 ft
Hydraulic Radius
0.6 in
Top Width
2.34 ft
Critical Depth
1.0 in
Critical Slope
0.014 ft/ft
Velocity
2.53 ft/s
Velocity Head
0.10 ft
Specific Energy
0.16 ft
Froude Number
1.954
Flow Type
Supercritical
GVF Input Data
Downstream Depth
0.0 in
Length
0.0 ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.0 in
Profile Description
N/A
Profile Headloss
0.00 ft
Downstream Velocity
Infinity ft/s
Upstream Velocity
Infinity ft/s
Normal Depth
0.7 in
Critical Depth
1.0 in
Channel Slope
0.060 ft/ft
Critical Slope
0.014 ft/ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Diversion Ditch Calcs.fm8 Center [10.03.00.03]
1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1
Watertown, CT 06795 USA + 1 -203-755-1666
Pre Development Calculations:
Project Name: The Bluffs at Wesley Chapel
SITE DRAINAGE AREA - Time of Concentration Calcuations
Sheet Flow
LDI PN# 1021119
*T= [0.07 (n L) 0.8/(P2) 0.5 (S) 0.4]
Max. Elevation:
612.5
Min. Elevation:
612
Flow Length (ft):
100
Slope:
0.50%
Mannings (woods - light underbrush):
0.15
Precipitation (2yr, 24 hr):
3.6
Travel Time (hr)*:
0.27
Shallow Concentrated
**UnPaved: V=16.1345(S)0.5
Max. Elevation:
612
Min. Elevation:
530
Flow Length (ft):
1130
Slope:
7.26%
Velocity (fps)**:
4.35
Travel Time (hr):
0.07
Open Channel:
Flow Length (ft):
3597
Velocity (fps):
5
Travel Time (hr):
0.20
TIME OF CONCENTRATION (hr): 0.5401
TIME OF CONCENTRATION (min): 32.41
2/28/2022
Union County
PRE -AREA
PRE -AREA
Table of Contents
Master Network Summary
Time -Depth Curve, 2 years (Union County - Synthetic Curve, 2 2
yrs)
Time -Depth Curve, 10 years (Union County - Synthetic Curve, 4
10 yrs)
Time -Depth Curve, 25 years (Union County - Synthetic Curve, 6
25 yrs)
Time -Depth Curve, 50 years (Union County - Synthetic Curve, 8
50 yrs)
Time -Depth Curve, 100 years (Union County - Synthetic Curve, 10
100 yrs)
Time of Concentration Calculations, 2 years (Union County - 12
Synthetic Curve, 2 yrs)
Runoff CN-Area, 2 years (Union County - Synthetic Curve, 2 14
yrs)
Subsection: Master Network Summary
Catchments Summary
Label Scenario Return Hydrograph Time to Peak Peak Flow
Event Volume (hours) (ft3/s)
(years) (ft3)
PRE -AREA
Union County -
2
96,874.000
12.250
16.82
Synthetic Curve, 2
yrs
PRE -AREA
Union County -
10
223,712.000
12.240
46.11
Synthetic Curve, 10
yrs
PRE -AREA
Union County -
25
316,675.000
12.240
67.52
Synthetic Curve, 25
yrs
PRE -AREA
Union County -
50
396,425.000
12.240
85.76
Synthetic Curve, 50
yrs
PRE -AREA
Union County -
100
490,633.000
12.240
107.16
Synthetic Curve, 100
yrs
Node Summary
Label Scenario Return Hydrograph Time to Peak Peak Flow
Event Volume (hours) (ft3/s)
(years) (ft3)
OUTFALL
Union County -
2
96,874.000
12.250
16.82
Synthetic Curve, 2
yrs
OUTFALL
Union County -
10
223,712.000
12.240
46.11
Synthetic Curve, 10
yrs
OUTFALL
Union County -
25
316,675.000
12.240
67.52
Synthetic Curve, 25
yrs
OUTFALL
Union County -
50
396,425.000
12.240
85.76
Synthetic Curve, 50
yrs
OUTFALL
Union County -
100
490,633.000
12.240
107.16
Synthetic Curve, 100
yrs
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
Pre Development - Total.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 1 of 15
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve
Label: Union County
Scenario: Union County - Synthetic Curve, 2 yrs
Time -Depth Curve: TypeII 24hr (3.6 in)
Label TypeII 24hr (3.6
in)
Start Time 0.000 hours
Increment 0.100 hours
End Time 24.000 hours
Return Event 2 years
Return Event: 2 years
Storm Event: TypeII 24hr (3.6 in)
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
0.000
0.0
0.0
0.0
0.0
0.0
0.500
0.0
0.0
0.0
0.0
0.0
1.000
0.0
0.0
0.0
0.0
0.1
1.500
0.1
0.1
0.1
0.1
0.1
2.000
0.1
0.1
0.1
0.1
0.1
2.500
0.1
0.1
0.1
0.1
0.1
3.000
0.1
0.1
0.1
0.1
0.1
3.500
0.1
0.2
0.2
0.2
0.2
4.000
0.2
0.2
0.2
0.2
0.2
4.500
0.2
0.2
0.2
0.2
0.2
5.000
0.2
0.2
0.2
0.2
0.3
5.500
0.3
0.3
0.3
0.3
0.3
6.000
0.3
0.3
0.3
0.3
0.3
6.500
0.3
0.3
0.3
0.3
0.3
7.000
0.4
0.4
0.4
0.4
0.4
7.500
0.4
0.4
0.4
0.4
0.4
8.000
0.4
0.4
0.4
0.5
0.5
8.500
0.5
0.5
0.5
0.5
0.5
9.000
0.5
0.5
0.6
0.6
0.6
9.500
0.6
0.6
0.6
0.6
0.6
10.000
0.7
0.7
0.7
0.7
0.7
10.500
0.7
0.8
0.8
0.8
0.8
11.000
0.8
0.9
0.9
0.9
1.0
11.500
1.0
1.1
1.3
1.6
2.0
12.000
2.4
2.5
2.5
2.6
2.6
12.500
2.6
2.7
2.7
2.7
2.8
13.000
2.8
2.8
2.8
2.8
2.9
13.500
2.9
2.9
2.9
2.9
2.9
14.000
3.0
3.0
3.0
3.0
3.0
14.500
3.0
3.0
3.0
3.1
3.1
15.000
3.1
3.1
3.1
3.1
3.1
15.500
3.1
3.1
3.1
3.2
3.2
16.000
3.2
3.2
3.2
3.2
3.2
16.500
3.2
3.2
3.2
3.2
3.2
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
Pre Development - Total.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 2 of 15
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve Return Event: 2 years
Label: Union County Storm Event: TypeII 24hr (3.6 in)
Scenario: Union County - Synthetic Curve, 2 yrs
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
17.000
3.2
3.3
3.3
3.3
3.3
17.500
3.3
3.3
3.3
3.3
3.3
18.000
3.3
3.3
3.3
3.3
3.3
18.500
3.3
3.4
3.4
3.4
3.4
19.000
3.4
3.4
3.4
3.4
3.4
19.500
3.4
3.4
3.4
3.4
3.4
20.000
3.4
3.4
3.4
3.4
3.4
20.500
3.5
3.5
3.5
3.5
3.5
21.000
3.5
3.5
3.5
3.5
3.5
21.500
3.5
3.5
3.5
3.5
3.5
22.000
3.5
3.5
3.5
3.5
3.5
22.500
3.5
3.5
3.5
3.6
3.6
23.000
3.6
3.6
3.6
3.6
3.6
23.500
3.6
3.6
3.6
3.6
3.6
24.000
3.6
(N/A)
(N/A)
(N/A)
(N/A)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
Pre Development - Total.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 3 of 15
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve
Label: Union County
Scenario: Union County - Synthetic Curve, 10 yrs
Time -Depth Curve: TypeII 24hr (5.2 in)
Label TypeII 24hr (5.2
in)
Start Time 0.000 hours
Increment 0.100 hours
End Time 24.000 hours
Return Event 10 years
Return Event: 10 years
Storm Event: TypeII 24hr (5.2 in)
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
0.000
0.0
0.0
0.0
0.0
0.0
0.500
0.0
0.0
0.0
0.0
0.0
1.000
0.1
0.1
0.1
0.1
0.1
1.500
0.1
0.1
0.1
0.1
0.1
2.000
0.1
0.1
0.1
0.1
0.1
2.500
0.1
0.2
0.2
0.2
0.2
3.000
0.2
0.2
0.2
0.2
0.2
3.500
0.2
0.2
0.2
0.2
0.2
4.000
0.2
0.3
0.3
0.3
0.3
4.500
0.3
0.3
0.3
0.3
0.3
5.000
0.3
0.3
0.3
0.4
0.4
5.500
0.4
0.4
0.4
0.4
0.4
6.000
0.4
0.4
0.4
0.4
0.5
6.500
0.5
0.5
0.5
0.5
0.5
7.000
0.5
0.5
0.5
0.5
0.6
7.500
0.6
0.6
0.6
0.6
0.6
8.000
0.6
0.6
0.6
0.7
0.7
8.500
0.7
0.7
0.7
0.7
0.7
9.000
0.8
0.8
0.8
0.8
0.8
9.500
0.8
0.9
0.9
0.9
0.9
10.000
0.9
1.0
1.0
1.0
1.0
10.500
1.1
1.1
1.1
1.2
1.2
11.000
1.2
1.3
1.3
1.4
1.4
11.500
1.5
1.6
1.8
2.2
3.0
12.000
3.4
3.5
3.6
3.7
3.8
12.500
3.8
3.9
3.9
3.9
4.0
13.000
4.0
4.0
4.1
4.1
4.1
13.500
4.2
4.2
4.2
4.2
4.2
14.000
4.3
4.3
4.3
4.3
4.3
14.500
4.4
4.4
4.4
4.4
4.4
15.000
4.4
4.5
4.5
4.5
4.5
15.500
4.5
4.5
4.5
4.6
4.6
16.000
4.6
4.6
4.6
4.6
4.6
16.500
4.6
4.6
4.7
4.7
4.7
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
Pre Development - Total.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 4 of 15
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve Return Event: 10 years
Label: Union County Storm Event: TypeII 24hr (5.2 in)
Scenario: Union County - Synthetic Curve, 10 yrs
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
17.000
4.7
4.7
4.7
4.7
4.7
17.500
4.7
4.8
4.8
4.8
4.8
18.000
4.8
4.8
4.8
4.8
4.8
18.500
4.8
4.8
4.9
4.9
4.9
19.000
4.9
4.9
4.9
4.9
4.9
19.500
4.9
4.9
4.9
4.9
4.9
20.000
5.0
5.0
5.0
5.0
5.0
20.500
5.0
5.0
5.0
5.0
5.0
21.000
5.0
5.0
5.0
5.0
5.0
21.500
5.0
5.1
5.1
5.1
5.1
22.000
5.1
5.1
5.1
5.1
5.1
22.500
5.1
5.1
5.1
5.1
5.1
23.000
5.1
5.1
5.2
5.2
5.2
23.500
5.2
5.2
5.2
5.2
5.2
24.000
5.2
(N/A)
(N/A)
(N/A)
(N/A)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
Pre Development - Total.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 5 of 15
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve
Label: Union County
Scenario: Union County - Synthetic Curve, 25 yrs
Time -Depth Curve: TypeII 24hr (6.2 in)
Label TypeII 24hr (6.2
in)
Start Time 0.000 hours
Increment 0.100 hours
End Time 24.000 hours
Return Event 25 years
Return Event: 25 years
Storm Event: TypeII 24hr (6.2 in)
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
0.000
0.0
0.0
0.0
0.0
0.0
0.500
0.0
0.0
0.0
0.1
0.1
1.000
0.1
0.1
0.1
0.1
0.1
1.500
0.1
0.1
0.1
0.1
0.1
2.000
0.1
0.1
0.2
0.2
0.2
2.500
0.2
0.2
0.2
0.2
0.2
3.000
0.2
0.2
0.2
0.2
0.2
3.500
0.3
0.3
0.3
0.3
0.3
4.000
0.3
0.3
0.3
0.3
0.3
4.500
0.3
0.4
0.4
0.4
0.4
5.000
0.4
0.4
0.4
0.4
0.4
5.500
0.4
0.5
0.5
0.5
0.5
6.000
0.5
0.5
0.5
0.5
0.5
6.500
0.6
0.6
0.6
0.6
0.6
7.000
0.6
0.6
0.6
0.7
0.7
7.500
0.7
0.7
0.7
0.7
0.7
8.000
0.7
0.8
0.8
0.8
0.8
8.500
0.8
0.8
0.9
0.9
0.9
9.000
0.9
0.9
1.0
1.0
1.0
9.500
1.0
1.0
1.1
1.1
1.1
10.000
1.1
1.1
1.2
1.2
1.2
10.500
1.3
1.3
1.3
1.4
1.4
11.000
1.5
1.5
1.6
1.6
1.7
11.500
1.8
1.9
2.2
2.7
3.5
12.000
4.1
4.2
4.3
4.4
4.5
12.500
4.6
4.6
4.7
4.7
4.7
13.000
4.8
4.8
4.9
4.9
4.9
13.500
5.0
5.0
5.0
5.0
5.1
14.000
5.1
5.1
5.1
5.2
5.2
14.500
5.2
5.2
5.2
5.3
5.3
15.000
5.3
5.3
5.3
5.3
5.4
15.500
5.4
5.4
5.4
5.4
5.4
16.000
5.5
5.5
5.5
5.5
5.5
16.500
5.5
5.5
5.6
5.6
5.6
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
Pre Development - Total.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 6 of 15
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve Return Event: 25 years
Label: Union County Storm Event: TypeII 24hr (6.2 in)
Scenario: Union County - Synthetic Curve, 25 yrs
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
17.000
5.6
5.6
5.6
5.6
5.6
17.500
5.7
5.7
5.7
5.7
5.7
18.000
5.7
5.7
5.7
5.7
5.8
18.500
5.8
5.8
5.8
5.8
5.8
19.000
5.8
5.8
5.8
5.8
5.9
19.500
5.9
5.9
5.9
5.9
5.9
20.000
5.9
5.9
5.9
5.9
5.9
20.500
5.9
6.0
6.0
6.0
6.0
21.000
6.0
6.0
6.0
6.0
6.0
21.500
6.0
6.0
6.0
6.0
6.0
22.000
6.1
6.1
6.1
6.1
6.1
22.500
6.1
6.1
6.1
6.1
6.1
23.000
6.1
6.1
6.1
6.2
6.2
23.500
6.2
6.2
6.2
6.2
6.2
24.000
6.2
(N/A)
(N/A)
(N/A)
(N/A)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
Pre Development - Total.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 7 of 15
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve
Label: Union County
Scenario: Union County - Synthetic Curve, 50 yrs
Time -Depth Curve: TypeII 24hr (7.0 in)
Label TypeII 24hr (7.0
in)
Start Time 0.000 hours
Increment 0.100 hours
End Time 24.000 hours
Return Event 50 years
Return Event: 50 years
Storm Event: TypeII 24hr (7.0 in)
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
0.000
0.0
0.0
0.0
0.0
0.0
0.500
0.0
0.0
0.1
0.1
0.1
1.000
0.1
0.1
0.1
0.1
0.1
1.500
0.1
0.1
0.1
0.1
0.1
2.000
0.2
0.2
0.2
0.2
0.2
2.500
0.2
0.2
0.2
0.2
0.2
3.000
0.2
0.3
0.3
0.3
0.3
3.500
0.3
0.3
0.3
0.3
0.3
4.000
0.3
0.3
0.4
0.4
0.4
4.500
0.4
0.4
0.4
0.4
0.4
5.000
0.4
0.5
0.5
0.5
0.5
5.500
0.5
0.5
0.5
0.5
0.5
6.000
0.6
0.6
0.6
0.6
0.6
6.500
0.6
0.6
0.7
0.7
0.7
7.000
0.7
0.7
0.7
0.7
0.8
7.500
0.8
0.8
0.8
0.8
0.8
8.000
0.8
0.9
0.9
0.9
0.9
8.500
0.9
0.9
1.0
1.0
1.0
9.000
1.0
1.1
1.1
1.1
1.1
9.500
1.1
1.2
1.2
1.2
1.2
10.000
1.3
1.3
1.3
1.4
1.4
10.500
1.4
1.5
1.5
1.5
1.6
11.000
1.6
1.7
1.8
1.8
1.9
11.500
2.0
2.1
2.5
3.0
4.0
12.000
4.6
4.8
4.9
5.0
5.1
12.500
5.1
5.2
5.3
5.3
5.4
13.000
5.4
5.4
5.5
5.5
5.6
13.500
5.6
5.6
5.7
5.7
5.7
14.000
5.7
5.8
5.8
5.8
5.8
14.500
5.9
5.9
5.9
5.9
6.0
15.000
6.0
6.0
6.0
6.0
6.1
15.500
6.1
6.1
6.1
6.1
6.1
16.000
6.2
6.2
6.2
6.2
6.2
16.500
6.2
6.3
6.3
6.3
6.3
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
Pre Development - Total.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 8 of 15
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve Return Event: 50 years
Label: Union County Storm Event: TypeII 24hr (7.0 in)
Scenario: Union County - Synthetic Curve, 50 yrs
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
17.000
6.3
6.3
6.3
6.4
6.4
17.500
6.4
6.4
6.4
6.4
6.4
18.000
6.4
6.5
6.5
6.5
6.5
18.500
6.5
6.5
6.5
6.5
6.6
19.000
6.6
6.6
6.6
6.6
6.6
19.500
6.6
6.6
6.6
6.6
6.7
20.000
6.7
6.7
6.7
6.7
6.7
20.500
6.7
6.7
6.7
6.7
6.7
21.000
6.8
6.8
6.8
6.8
6.8
21.500
6.8
6.8
6.8
6.8
6.8
22.000
6.8
6.8
6.9
6.9
6.9
22.500
6.9
6.9
6.9
6.9
6.9
23.000
6.9
6.9
6.9
6.9
7.0
23.500
7.0
7.0
7.0
7.0
7.0
24.000
7.0
(N/A)
(N/A)
(N/A)
(N/A)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
Pre Development - Total.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 9 of 15
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve
Label: Union County
Scenario: Union County - Synthetic Curve, 100 yrs
Time -Depth Curve: TypeII 24hr (7.9 in)
Label TypeII 24hr (7.9
in)
Start Time 0.000 hours
Increment 0.100 hours
End Time 24.000 hours
Return Event 100 years
Return Event: 100 years
Storm Event: TypeII 24hr (7.9 in)
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
0.000
0.0
0.0
0.0
0.0
0.0
0.500
0.0
0.0
0.1
0.1
0.1
1.000
0.1
0.1
0.1
0.1
0.1
1.500
0.1
0.1
0.1
0.2
0.2
2.000
0.2
0.2
0.2
0.2
0.2
2.500
0.2
0.2
0.2
0.3
0.3
3.000
0.3
0.3
0.3
0.3
0.3
3.500
0.3
0.3
0.3
0.4
0.4
4.000
0.4
0.4
0.4
0.4
0.4
4.500
0.4
0.4
0.5
0.5
0.5
5.000
0.5
0.5
0.5
0.5
0.5
5.500
0.6
0.6
0.6
0.6
0.6
6.000
0.6
0.6
0.7
0.7
0.7
6.500
0.7
0.7
0.7
0.8
0.8
7.000
0.8
0.8
0.8
0.8
0.8
7.500
0.9
0.9
0.9
0.9
0.9
8.000
0.9
1.0
1.0
1.0
1.0
8.500
1.0
1.1
1.1
1.1
1.1
9.000
1.2
1.2
1.2
1.2
1.3
9.500
1.3
1.3
1.3
1.4
1.4
10.000
1.4
1.5
1.5
1.5
1.6
10.500
1.6
1.7
1.7
1.7
1.8
11.000
1.9
1.9
2.0
2.1
2.1
11.500
2.2
2.4
2.8
3.4
4.5
12.000
5.2
5.4
5.5
5.6
5.7
12.500
5.8
5.9
5.9
6.0
6.0
13.000
6.1
6.1
6.2
6.2
6.3
13.500
6.3
6.3
6.4
6.4
6.4
14.000
6.5
6.5
6.5
6.6
6.6
14.500
6.6
6.6
6.7
6.7
6.7
15.000
6.7
6.8
6.8
6.8
6.8
15.500
6.9
6.9
6.9
6.9
6.9
16.000
7.0
7.0
7.0
7.0
7.0
16.500
7.0
7.1
7.1
7.1
7.1
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
Pre Development - Total.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 10 of 15
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve Return Event: 100 years
Label: Union County Storm Event: TypeII 24hr (7.9 in)
Scenario: Union County - Synthetic Curve, 100 yrs
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
17.000
7.1
7.1
7.2
7.2
7.2
17.500
7.2
7.2
7.2
7.2
7.3
18.000
7.3
7.3
7.3
7.3
7.3
18.500
7.3
7.4
7.4
7.4
7.4
19.000
7.4
7.4
7.4
7.4
7.5
19.500
7.5
7.5
7.5
7.5
7.5
20.000
7.5
7.5
7.5
7.6
7.6
20.500
7.6
7.6
7.6
7.6
7.6
21.000
7.6
7.6
7.6
7.7
7.7
21.500
7.7
7.7
7.7
7.7
7.7
22.000
7.7
7.7
7.7
7.7
7.8
22.500
7.8
7.8
7.8
7.8
7.8
23.000
7.8
7.8
7.8
7.8
7.8
23.500
7.9
7.9
7.9
7.9
7.9
24.000
7.9
(N/A)
(N/A)
(N/A)
(N/A)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
Pre Development - Total.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 11 of 15
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time of Concentration Calculations
Label: PRE -AREA
Scenario: Union County - Synthetic Curve, 2 yrs
Time of Concentration Results
Segment #1: User Defined Tc
Time of Concentration 0.540 hours
Time of Concentration (Composite)
Time of Concentration 0.540 hours
(Composite)
Bentley Systems, Inc. Haestad Methods Solution
Pre Development - Total.ppc Center
2/28/2022 27 Siemon Company Drive Suite 200 W
Watertown, CT 06795 USA +1-203-755-1666
Return Event: 2 years
Storm Event: TypeII 24hr (3.6 in)
Pond Pack CONNECT Edition
[10.02.00.01]
Page 12 of 15
Subsection: Time of Concentration Calculations Return Event: 2 years
Label: PRE -AREA Storm Event: TypeII 24hr (3.6 in)
Scenario: Union County - Synthetic Curve, 2 yrs
___= User Defined
Tc = Value entered by user
Where: Tc= Time of concentration, hours
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
Pre Development - Total.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 13 of 15
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Runoff CN-Area
Label: PRE -AREA
Scenario: Union County - Synthetic Curve, 2 yrs
Runoff Curve Number Data
Return Event: 2 years
Storm Event: TypeII 24hr (3.6 in)
Soil/Surface Description CN Area C UC Adjusted CN
(acres) (%) (%)
Woods - good - Soil B
55.000
23.189
0.0
0.0
55.000
Woods - good - Soil D
77.000
14.458
0.0
0.0
77.000
COMPOSITE AREA & WEIGHTED CN --->
(N/A)
37.647
(N/A)
(N/A)
63.449
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
Pre Development - Total.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 14 of 15
Watertown, CT 06795 USA +1-203-755-1666
Index
Master Network Summary ... 1
PRE -AREA (Runoff CN-Area, 2 years (Union County - Synthetic Curve, 2 yrs))... 14
PRE -AREA (Time of Concentration Calculations, 2 years (Union County - Synthetic
Curve, 2 yrs))... 12, 13
U
Union County (Time -Depth Curve, 10 years (Union County -
Synthetic Curve, 10
yrs))... 4, 5
Union County (Time -Depth Curve, 100 years (Union County
- Synthetic Curve, 100
yrs))... 10, 11
Union County (Time -Depth Curve, 2 years (Union County - Synthetic Curve, 2
yrs))... 2, 3
Union County (Time -Depth Curve, 25 years (Union County -
Synthetic Curve, 25
yrs))... 6, 7
Union County (Time -Depth Curve, 50 years (Union County -
Synthetic Curve, 50
yrs))... 8, 9
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
Pre Development - Total.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 15 of 15
Watertown, CT 06795 USA +1-203-755-1666
Post Development Calculations:
Table of Contents
Master Network Summary 1
Union County
Time -Depth Curve, 2 years (Union County - Synthetic Curve, 2 2
yrs)
Time -Depth Curve, 10 years (Union County - Synthetic Curve, 4
10 yrs)
Time -Depth Curve, 25 years (Union County - Synthetic Curve, 6
25 yrs)
Time -Depth Curve, 50 years (Union County - Synthetic Curve, 8
50 yrs)
Time -Depth Curve, 100 years (Union County - Synthetic Curve, 10
100 yrs)
POST-UNDETAINED Time of Concentration Calculations, 2 years (Union County - 12
Synthetic Curve, 2 yrs)
POST-UNDETAINED YRunoffCN-Area, 2 years (Union County - Synthetic Curve, 2 14
Subsection: Master Network Summary
Catchments Summary
Label Scenario Return Hydrograph Time to Peak Peak Flow
Event Volume (hours) (ft3/s)
(years) (ft3)
POST-UNDETAINED
Union County -
2
45,835.000
12.120
10.74
Synthetic Curve, 2
yrs
POST-UNDETAINED
Union County -
10
110,506.000
12.080
30.92
Synthetic Curve, 10
yrs
POST-UNDETAINED
Union County -
25
158,671.000
12.080
46.23
Synthetic Curve, 25
yrs
POST-UNDETAINED
Union County -
50
200,290.000
12.080
59.36
Synthetic Curve, 50
yrs
POST-UNDETAINED
Union County -
100
249,709.000
12.080
74.83
Synthetic Curve, 100
yrs
Node Summary
Label Scenario Return Hydrograph Time to Peak Peak Flow
Event Volume (hours) (ft3/s)
(years) (ft3)
OUTFALL
Union County -
2
45,835.000
12.120
10.74
Synthetic Curve, 2
yrs
OUTFALL
Union County -
10
110,506.000
12.080
30.92
Synthetic Curve, 10
yrs
OUTFALL
Union County -
25
158,671.000
12.080
46.23
Synthetic Curve, 25
yrs
OUTFALL
Union County -
50
200,290.000
12.080
59.36
Synthetic Curve, 50
yrs
OUTFALL
Union County -
100
249,709.000
12.080
74.83
Synthetic Curve, 100
yrs
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
Post Development - Total Undetained.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 1 of 15
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve
Label: Union County
Scenario: Union County - Synthetic Curve, 2 yrs
Time -Depth Curve: TypeII 24hr (3.6 in)
Label TypeII 24hr (3.6
in)
Start Time 0.000 hours
Increment 0.100 hours
End Time 24.000 hours
Return Event 2 years
Return Event: 2 years
Storm Event: TypeII 24hr (3.6 in)
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
0.000
0.0
0.0
0.0
0.0
0.0
0.500
0.0
0.0
0.0
0.0
0.0
1.000
0.0
0.0
0.0
0.0
0.1
1.500
0.1
0.1
0.1
0.1
0.1
2.000
0.1
0.1
0.1
0.1
0.1
2.500
0.1
0.1
0.1
0.1
0.1
3.000
0.1
0.1
0.1
0.1
0.1
3.500
0.1
0.2
0.2
0.2
0.2
4.000
0.2
0.2
0.2
0.2
0.2
4.500
0.2
0.2
0.2
0.2
0.2
5.000
0.2
0.2
0.2
0.2
0.3
5.500
0.3
0.3
0.3
0.3
0.3
6.000
0.3
0.3
0.3
0.3
0.3
6.500
0.3
0.3
0.3
0.3
0.3
7.000
0.4
0.4
0.4
0.4
0.4
7.500
0.4
0.4
0.4
0.4
0.4
8.000
0.4
0.4
0.4
0.5
0.5
8.500
0.5
0.5
0.5
0.5
0.5
9.000
0.5
0.5
0.6
0.6
0.6
9.500
0.6
0.6
0.6
0.6
0.6
10.000
0.7
0.7
0.7
0.7
0.7
10.500
0.7
0.8
0.8
0.8
0.8
11.000
0.8
0.9
0.9
0.9
1.0
11.500
1.0
1.1
1.3
1.6
2.0
12.000
2.4
2.5
2.5
2.6
2.6
12.500
2.6
2.7
2.7
2.7
2.8
13.000
2.8
2.8
2.8
2.8
2.9
13.500
2.9
2.9
2.9
2.9
2.9
14.000
3.0
3.0
3.0
3.0
3.0
14.500
3.0
3.0
3.0
3.1
3.1
15.000
3.1
3.1
3.1
3.1
3.1
15.500
3.1
3.1
3.1
3.2
3.2
16.000
3.2
3.2
3.2
3.2
3.2
16.500
3.2
3.2
3.2
3.2
3.2
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
Post Development - Total Undetained.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 2 of 15
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve Return Event: 2 years
Label: Union County Storm Event: TypeII 24hr (3.6 in)
Scenario: Union County - Synthetic Curve, 2 yrs
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
17.000
3.2
3.3
3.3
3.3
3.3
17.500
3.3
3.3
3.3
3.3
3.3
18.000
3.3
3.3
3.3
3.3
3.3
18.500
3.3
3.4
3.4
3.4
3.4
19.000
3.4
3.4
3.4
3.4
3.4
19.500
3.4
3.4
3.4
3.4
3.4
20.000
3.4
3.4
3.4
3.4
3.4
20.500
3.5
3.5
3.5
3.5
3.5
21.000
3.5
3.5
3.5
3.5
3.5
21.500
3.5
3.5
3.5
3.5
3.5
22.000
3.5
3.5
3.5
3.5
3.5
22.500
3.5
3.5
3.5
3.6
3.6
23.000
3.6
3.6
3.6
3.6
3.6
23.500
3.6
3.6
3.6
3.6
3.6
24.000
3.6
(N/A)
(N/A)
(N/A)
(N/A)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
Post Development - Total Undetained.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 3 of 15
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve
Label: Union County
Scenario: Union County - Synthetic Curve, 10 yrs
Time -Depth Curve: TypeII 24hr (5.2 in)
Label TypeII 24hr (5.2
in)
Start Time 0.000 hours
Increment 0.100 hours
End Time 24.000 hours
Return Event 10 years
Return Event: 10 years
Storm Event: TypeII 24hr (5.2 in)
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
0.000
0.0
0.0
0.0
0.0
0.0
0.500
0.0
0.0
0.0
0.0
0.0
1.000
0.1
0.1
0.1
0.1
0.1
1.500
0.1
0.1
0.1
0.1
0.1
2.000
0.1
0.1
0.1
0.1
0.1
2.500
0.1
0.2
0.2
0.2
0.2
3.000
0.2
0.2
0.2
0.2
0.2
3.500
0.2
0.2
0.2
0.2
0.2
4.000
0.2
0.3
0.3
0.3
0.3
4.500
0.3
0.3
0.3
0.3
0.3
5.000
0.3
0.3
0.3
0.4
0.4
5.500
0.4
0.4
0.4
0.4
0.4
6.000
0.4
0.4
0.4
0.4
0.5
6.500
0.5
0.5
0.5
0.5
0.5
7.000
0.5
0.5
0.5
0.5
0.6
7.500
0.6
0.6
0.6
0.6
0.6
8.000
0.6
0.6
0.6
0.7
0.7
8.500
0.7
0.7
0.7
0.7
0.7
9.000
0.8
0.8
0.8
0.8
0.8
9.500
0.8
0.9
0.9
0.9
0.9
10.000
0.9
1.0
1.0
1.0
1.0
10.500
1.1
1.1
1.1
1.2
1.2
11.000
1.2
1.3
1.3
1.4
1.4
11.500
1.5
1.6
1.8
2.2
3.0
12.000
3.4
3.5
3.6
3.7
3.8
12.500
3.8
3.9
3.9
3.9
4.0
13.000
4.0
4.0
4.1
4.1
4.1
13.500
4.2
4.2
4.2
4.2
4.2
14.000
4.3
4.3
4.3
4.3
4.3
14.500
4.4
4.4
4.4
4.4
4.4
15.000
4.4
4.5
4.5
4.5
4.5
15.500
4.5
4.5
4.5
4.6
4.6
16.000
4.6
4.6
4.6
4.6
4.6
16.500
4.6
4.6
4.7
4.7
4.7
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
Post Development - Total Undetained.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 4 of 15
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve Return Event: 10 years
Label: Union County Storm Event: TypeII 24hr (5.2 in)
Scenario: Union County - Synthetic Curve, 10 yrs
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
17.000
4.7
4.7
4.7
4.7
4.7
17.500
4.7
4.8
4.8
4.8
4.8
18.000
4.8
4.8
4.8
4.8
4.8
18.500
4.8
4.8
4.9
4.9
4.9
19.000
4.9
4.9
4.9
4.9
4.9
19.500
4.9
4.9
4.9
4.9
4.9
20.000
5.0
5.0
5.0
5.0
5.0
20.500
5.0
5.0
5.0
5.0
5.0
21.000
5.0
5.0
5.0
5.0
5.0
21.500
5.0
5.1
5.1
5.1
5.1
22.000
5.1
5.1
5.1
5.1
5.1
22.500
5.1
5.1
5.1
5.1
5.1
23.000
5.1
5.1
5.2
5.2
5.2
23.500
5.2
5.2
5.2
5.2
5.2
24.000
5.2
(N/A)
(N/A)
(N/A)
(N/A)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
Post Development - Total Undetained.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 5 of 15
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve
Label: Union County
Scenario: Union County - Synthetic Curve, 25 yrs
Time -Depth Curve: TypeII 24hr (6.2 in)
Label TypeII 24hr (6.2
in)
Start Time 0.000 hours
Increment 0.100 hours
End Time 24.000 hours
Return Event 25 years
Return Event: 25 years
Storm Event: TypeII 24hr (6.2 in)
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
0.000
0.0
0.0
0.0
0.0
0.0
0.500
0.0
0.0
0.0
0.1
0.1
1.000
0.1
0.1
0.1
0.1
0.1
1.500
0.1
0.1
0.1
0.1
0.1
2.000
0.1
0.1
0.2
0.2
0.2
2.500
0.2
0.2
0.2
0.2
0.2
3.000
0.2
0.2
0.2
0.2
0.2
3.500
0.3
0.3
0.3
0.3
0.3
4.000
0.3
0.3
0.3
0.3
0.3
4.500
0.3
0.4
0.4
0.4
0.4
5.000
0.4
0.4
0.4
0.4
0.4
5.500
0.4
0.5
0.5
0.5
0.5
6.000
0.5
0.5
0.5
0.5
0.5
6.500
0.6
0.6
0.6
0.6
0.6
7.000
0.6
0.6
0.6
0.7
0.7
7.500
0.7
0.7
0.7
0.7
0.7
8.000
0.7
0.8
0.8
0.8
0.8
8.500
0.8
0.8
0.9
0.9
0.9
9.000
0.9
0.9
1.0
1.0
1.0
9.500
1.0
1.0
1.1
1.1
1.1
10.000
1.1
1.1
1.2
1.2
1.2
10.500
1.3
1.3
1.3
1.4
1.4
11.000
1.5
1.5
1.6
1.6
1.7
11.500
1.8
1.9
2.2
2.7
3.5
12.000
4.1
4.2
4.3
4.4
4.5
12.500
4.6
4.6
4.7
4.7
4.7
13.000
4.8
4.8
4.9
4.9
4.9
13.500
5.0
5.0
5.0
5.0
5.1
14.000
5.1
5.1
5.1
5.2
5.2
14.500
5.2
5.2
5.2
5.3
5.3
15.000
5.3
5.3
5.3
5.3
5.4
15.500
5.4
5.4
5.4
5.4
5.4
16.000
5.5
5.5
5.5
5.5
5.5
16.500
5.5
5.5
5.6
5.6
5.6
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
Post Development - Total Undetained.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 6 of 15
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve Return Event: 25 years
Label: Union County Storm Event: TypeII 24hr (6.2 in)
Scenario: Union County - Synthetic Curve, 25 yrs
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
17.000
5.6
5.6
5.6
5.6
5.6
17.500
5.7
5.7
5.7
5.7
5.7
18.000
5.7
5.7
5.7
5.7
5.8
18.500
5.8
5.8
5.8
5.8
5.8
19.000
5.8
5.8
5.8
5.8
5.9
19.500
5.9
5.9
5.9
5.9
5.9
20.000
5.9
5.9
5.9
5.9
5.9
20.500
5.9
6.0
6.0
6.0
6.0
21.000
6.0
6.0
6.0
6.0
6.0
21.500
6.0
6.0
6.0
6.0
6.0
22.000
6.1
6.1
6.1
6.1
6.1
22.500
6.1
6.1
6.1
6.1
6.1
23.000
6.1
6.1
6.1
6.2
6.2
23.500
6.2
6.2
6.2
6.2
6.2
24.000
6.2
(N/A)
(N/A)
(N/A)
(N/A)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
Post Development - Total Undetained.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 7 of 15
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve
Label: Union County
Scenario: Union County - Synthetic Curve, 50 yrs
Time -Depth Curve: TypeII 24hr (7.0 in)
Label TypeII 24hr (7.0
in)
Start Time 0.000 hours
Increment 0.100 hours
End Time 24.000 hours
Return Event 50 years
Return Event: 50 years
Storm Event: TypeII 24hr (7.0 in)
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
0.000
0.0
0.0
0.0
0.0
0.0
0.500
0.0
0.0
0.1
0.1
0.1
1.000
0.1
0.1
0.1
0.1
0.1
1.500
0.1
0.1
0.1
0.1
0.1
2.000
0.2
0.2
0.2
0.2
0.2
2.500
0.2
0.2
0.2
0.2
0.2
3.000
0.2
0.3
0.3
0.3
0.3
3.500
0.3
0.3
0.3
0.3
0.3
4.000
0.3
0.3
0.4
0.4
0.4
4.500
0.4
0.4
0.4
0.4
0.4
5.000
0.4
0.5
0.5
0.5
0.5
5.500
0.5
0.5
0.5
0.5
0.5
6.000
0.6
0.6
0.6
0.6
0.6
6.500
0.6
0.6
0.7
0.7
0.7
7.000
0.7
0.7
0.7
0.7
0.8
7.500
0.8
0.8
0.8
0.8
0.8
8.000
0.8
0.9
0.9
0.9
0.9
8.500
0.9
0.9
1.0
1.0
1.0
9.000
1.0
1.1
1.1
1.1
1.1
9.500
1.1
1.2
1.2
1.2
1.2
10.000
1.3
1.3
1.3
1.4
1.4
10.500
1.4
1.5
1.5
1.5
1.6
11.000
1.6
1.7
1.8
1.8
1.9
11.500
2.0
2.1
2.5
3.0
4.0
12.000
4.6
4.8
4.9
5.0
5.1
12.500
5.1
5.2
5.3
5.3
5.4
13.000
5.4
5.4
5.5
5.5
5.6
13.500
5.6
5.6
5.7
5.7
5.7
14.000
5.7
5.8
5.8
5.8
5.8
14.500
5.9
5.9
5.9
5.9
6.0
15.000
6.0
6.0
6.0
6.0
6.1
15.500
6.1
6.1
6.1
6.1
6.1
16.000
6.2
6.2
6.2
6.2
6.2
16.500
6.2
6.3
6.3
6.3
6.3
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
Post Development - Total Undetained.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 8 of 15
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve Return Event: 50 years
Label: Union County Storm Event: TypeII 24hr (7.0 in)
Scenario: Union County - Synthetic Curve, 50 yrs
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
17.000
6.3
6.3
6.3
6.4
6.4
17.500
6.4
6.4
6.4
6.4
6.4
18.000
6.4
6.5
6.5
6.5
6.5
18.500
6.5
6.5
6.5
6.5
6.6
19.000
6.6
6.6
6.6
6.6
6.6
19.500
6.6
6.6
6.6
6.6
6.7
20.000
6.7
6.7
6.7
6.7
6.7
20.500
6.7
6.7
6.7
6.7
6.7
21.000
6.8
6.8
6.8
6.8
6.8
21.500
6.8
6.8
6.8
6.8
6.8
22.000
6.8
6.8
6.9
6.9
6.9
22.500
6.9
6.9
6.9
6.9
6.9
23.000
6.9
6.9
6.9
6.9
7.0
23.500
7.0
7.0
7.0
7.0
7.0
24.000
7.0
(N/A)
(N/A)
(N/A)
(N/A)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
Post Development - Total Undetained.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 9 of 15
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve
Label: Union County
Scenario: Union County - Synthetic Curve, 100 yrs
Time -Depth Curve: TypeII 24hr (7.9 in)
Label TypeII 24hr (7.9
in)
Start Time 0.000 hours
Increment 0.100 hours
End Time 24.000 hours
Return Event 100 years
Return Event: 100 years
Storm Event: TypeII 24hr (7.9 in)
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
0.000
0.0
0.0
0.0
0.0
0.0
0.500
0.0
0.0
0.1
0.1
0.1
1.000
0.1
0.1
0.1
0.1
0.1
1.500
0.1
0.1
0.1
0.2
0.2
2.000
0.2
0.2
0.2
0.2
0.2
2.500
0.2
0.2
0.2
0.3
0.3
3.000
0.3
0.3
0.3
0.3
0.3
3.500
0.3
0.3
0.3
0.4
0.4
4.000
0.4
0.4
0.4
0.4
0.4
4.500
0.4
0.4
0.5
0.5
0.5
5.000
0.5
0.5
0.5
0.5
0.5
5.500
0.6
0.6
0.6
0.6
0.6
6.000
0.6
0.6
0.7
0.7
0.7
6.500
0.7
0.7
0.7
0.8
0.8
7.000
0.8
0.8
0.8
0.8
0.8
7.500
0.9
0.9
0.9
0.9
0.9
8.000
0.9
1.0
1.0
1.0
1.0
8.500
1.0
1.1
1.1
1.1
1.1
9.000
1.2
1.2
1.2
1.2
1.3
9.500
1.3
1.3
1.3
1.4
1.4
10.000
1.4
1.5
1.5
1.5
1.6
10.500
1.6
1.7
1.7
1.7
1.8
11.000
1.9
1.9
2.0
2.1
2.1
11.500
2.2
2.4
2.8
3.4
4.5
12.000
5.2
5.4
5.5
5.6
5.7
12.500
5.8
5.9
5.9
6.0
6.0
13.000
6.1
6.1
6.2
6.2
6.3
13.500
6.3
6.3
6.4
6.4
6.4
14.000
6.5
6.5
6.5
6.6
6.6
14.500
6.6
6.6
6.7
6.7
6.7
15.000
6.7
6.8
6.8
6.8
6.8
15.500
6.9
6.9
6.9
6.9
6.9
16.000
7.0
7.0
7.0
7.0
7.0
16.500
7.0
7.1
7.1
7.1
7.1
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
Post Development - Total Undetained.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 10 of 15
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve Return Event: 100 years
Label: Union County Storm Event: TypeII 24hr (7.9 in)
Scenario: Union County - Synthetic Curve, 100 yrs
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
17.000
7.1
7.1
7.2
7.2
7.2
17.500
7.2
7.2
7.2
7.2
7.3
18.000
7.3
7.3
7.3
7.3
7.3
18.500
7.3
7.4
7.4
7.4
7.4
19.000
7.4
7.4
7.4
7.4
7.5
19.500
7.5
7.5
7.5
7.5
7.5
20.000
7.5
7.5
7.5
7.6
7.6
20.500
7.6
7.6
7.6
7.6
7.6
21.000
7.6
7.6
7.6
7.7
7.7
21.500
7.7
7.7
7.7
7.7
7.7
22.000
7.7
7.7
7.7
7.7
7.8
22.500
7.8
7.8
7.8
7.8
7.8
23.000
7.8
7.8
7.8
7.8
7.8
23.500
7.9
7.9
7.9
7.9
7.9
24.000
7.9
(N/A)
(N/A)
(N/A)
(N/A)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
Post Development - Total Undetained.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 11 of 15
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time of Concentration Calculations
Label: POST-UNDETAINED
Scenario: Union County - Synthetic Curve, 2 yrs
Time of Concentration Results
Segment #1: User Defined Tc
Time of Concentration 0.313 hours
Time of Concentration (Composite)
Time of Concentration 0.313 hours
(Composite)
Bentley Systems, Inc. Haestad Methods Solution
Post Development - Total Undetained.ppc Center
2/28/2022 27 Siemon Company Drive Suite 200 W
Watertown, CT 06795 USA +1-203-755-1666
Return Event: 2 years
Storm Event: TypeII 24hr (3.6 in)
Pond Pack CONNECT Edition
[10.02.00.01]
Page 12 of 15
Subsection: Time of Concentration Calculations
Label: POST-UNDETAINED
Scenario: Union County - Synthetic Curve, 2 yrs
==== User Defined
Tc = Value entered by user
Where: Tc= Time of concentration, hours
Bentley Systems, Inc. Haestad Methods Solution
Post Development - Total Undetained.ppc Center
2/28/2022 27 Siemon Company Drive Suite 200 W
Watertown, CT 06795 USA +1-203-755-1666
Return Event: 2 years
Storm Event: TypeII 24hr (3.6 in)
Pond Pack CONNECT Edition
[10.02.00.01]
Page 13 of 15
Subsection: Runoff CN-Area
Label: POST-UNDETAINED
Scenario: Union County - Synthetic Curve, 2 yrs
Runoff Curve Number Data
Return Event: 2 years
Storm Event: TypeII 24hr (3.6 in)
Soil/Surface Description CN Area C UC Adjusted CN
(acres) (%) (%)
Open space (Lawns,parks etc.) - Good
61.000
20.421
0.0
0.0
61.000
condition; grass cover > 75% - Soil B
COMPOSITE AREA & WEIGHTED CN --->
(N/A)
20.421
(N/A)
(N/A)
61.000
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
Post Development - Total Undetained.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 14 of 15
Watertown, CT 06795 USA +1-203-755-1666
Index
Master Network Summary ... 1
POST-UNDETAINED (Runoff CN-Area, 2 years (Union County - Synthetic Curve, 2
yrs))... 14
POST-UNDETAINED (Time of Concentration Calculations, 2 years (Union County -
Synthetic Curve, 2 yrs))... 12, 13
U
Union County (Time -Depth Curve, 10 years (Union County -
Synthetic Curve, 10
yrs))... 4, 5
Union County (Time -Depth Curve, 100 years (Union County
- Synthetic Curve, 100
yrs))... 10, 11
Union County (Time -Depth Curve, 2 years (Union County - Synthetic Curve, 2
yrs))... 2, 3
Union County (Time -Depth Curve, 25 years (Union County -
Synthetic Curve, 25
yrs))... 6, 7
Union County (Time -Depth Curve, 50 years (Union County -
Synthetic Curve, 50
yrs))... 8, 9
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
Post Development - Total Undetained.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 15 of 15
Watertown, CT 06795 USA +1-203-755-1666
BMP-1 Calculations:
Project Name: The Bluffs at Wesley Chapel
Project Number: 1021119
Design Requirements: 85% TSS REMOVAL
Given Information:
Land Use:
Residential
Drainage Area to Facility (Acres):
5.45
Meck. County (Minimum 10 Ac. Less than 10 Ac requires water balance computations)
Impervious Area (Acres):
2.98
Percent Impervious:
54.7%
Soil Type:
ChA, GsE, TbB2
Soil Group:
B/D
Curve Number (CN) Pre:
63
Curve Number (CN) Post:
81
Time of Concentration Pre (hour):
0.540
Time of Concentration Post (hour):
0.083
Design Storm Rainfall Depth (in):
1.0
(Typically 1")
Detention Time (Day):
2
Meck. County:
4 days - 85% TSS & 70% TP (Optimal Efficiency)
2 days - 60% TSS & 40% TP (Standard Efficiency)
4 days - 85% TSS & 0% TP (TSS - Only Efficiency)
NCDENR:
2 - 5 days - 85% TSS & 40% TP
Watershed:
Mountain and Piedmont
(85% TSS)
Efficiency:
NCDEN R
Wet Pond Design (NCDENR - 2007)
Project Name: The Bluffs at Wesley Chapel
Job Number: 1021119
Step 1: Compute the water quality volume (WQV).
WQv (Ft) = (3630) X (RD) X (Rv) X (AD)
Where:
WQV = Water Quality Volume (Ft)
AD = Drainage Area to Wet Pond (acres).
Rv= Volumetric Runoff Coefficient = 0.05 + 0.9 (% Impervious)
Rp = Design Storm Rainfall Depth (in). Typically 1.0".
Percent Impervious = 55%
AD = 5.45 acres
RD= 1.0 in
Rv = 0.54
WQv = 10,725 Ft3
Step 2: Determine Surface Area Requirements.
Average Permanent Pool Depth = 3.26 Feet
Percent Impervious = 55%
SA / DA Ratio = 2.06
Required Surface Area = 4,890 Ft2
Step 3: Preliminary Temporary Water Quality Drawdown Calculations
Pond Height above Orifice = 570.81 feet
Orifice Invert Elevation = 569.00 feet
Pond Surface Area at Height Above Orifice
= 7,876
square feet
Pond Surface Area at Orifice Invert Elevation
= 5,346
square feet
Orifice Diameter (D)
= 1.50
inches = 0.13 feet
Orifice Area (a)
= 0.0123
square feet
Average Surface Area (A)
= 6,611
square feet
Gravitational Constatnt (g)
= 32.2
ft/sec2
Head (H)
= 1.75
feet
Discharge Coefficient (C)
= 0.6
Time (t)
= 295,802
seconds = 3.42 days
Note:
The above calculation is based on the Bernoulli Equation where:
t ° x (0 - H°.5
; x a x (2g))
Step 4: Compute Site Hydraulic Input Parameters.
Condition
Area (Ac)
CN
Tc (hours)
Pre -developed
37.65
63
0.54
Post -developed
5.45
81
0.083
Results
Condition
Q1-year
Q10-year
Q25-year
Q50-year
Pre -developed
N/A
46.11
67.52
85.76
Post -developed
N/A
10.97
14.49
16.50
Table of Contents
Master Network Summary
Union County
Time -Depth Curve, 1 years (Union County - Synthetic Curve, 1
yrs)
POST -AREA
Time of Concentration Calculations, 1 years (Union County -
Synthetic Curve, 1 yrs)
POST -AREA
Runoff CN-Area, 1 years (Union County - Synthetic Curve, 1
yrs)
BMP-1
Elevation -Area Volume Curve, 1 years (Union County -
Synthetic Curve, 1 yrs)
Riser-1
Outlet Input Data, 1 years (Union County - Synthetic Curve, 1
yrs)
Subsection: Master Network Summary
Catchments Summary
Label Scenario Return Hydrograph Time to Peak Peak Flow
Event Volume (hours) (ft3/s)
(years) (ft3)
POST -AREA
Union County -
1
15,647.000
11.900
6.30
Synthetic Curve, 1
yrs
Node Summary
Label Scenario Return Hydrograph Time to Peak Peak Flow
Event Volume (hours) (ft3/s)
(years) (ft3)
OUTFALL
Union County -
1
15,423.000
19.400
0.08
Synthetic Curve, 1
yrs
Pond Summary
Label Scenario Return Hydrograph Time to Peak Peak Flow
Event Volume (hours) (ft3/s)
(years) (ft3)
Maximum
Maximum
Water
Pond Storage
Surface
(ft3)
Elevation
(ft)
BMP-1 (IN)
Union County -
1
15,647.000
11.900
6.30
(N/A)
(N/A)
Synthetic
Curve, 1 yrs
BMP-1
Union County -
1
15,423.000
19.400
0.08
570.81
12,207.000
(OUT)
Synthetic
Curve, 1 yrs
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 WQ.ppc Center [10.02.00.01]
2/11/2022 27 Siemon Company Drive Suite 200 W Page 1 of 12
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve
Label: Union County
Scenario: Union County - Synthetic Curve, 1 yrs
Time -Depth Curve: TypeII 24hr (1.0 in)
Label TypeII 24hr (1.0
in)
Start Time 0.000 hours
Increment 0.100 hours
End Time 24.000 hours
Return Event 1 years
Return Event: 1 years
Storm Event: TypeII 24hr (1.0 in)
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
0.000
0.0
0.0
0.0
0.0
0.0
0.500
0.0
0.0
0.0
0.0
0.0
1.000
0.0
0.0
0.0
0.0
0.0
1.500
0.0
0.0
0.0
0.0
0.0
2.000
0.0
0.0
0.0
0.0
0.0
2.500
0.0
0.0
0.0
0.0
0.0
3.000
0.0
0.0
0.0
0.0
0.0
3.500
0.0
0.0
0.0
0.0
0.0
4.000
0.0
0.0
0.1
0.1
0.1
4.500
0.1
0.1
0.1
0.1
0.1
5.000
0.1
0.1
0.1
0.1
0.1
5.500
0.1
0.1
0.1
0.1
0.1
6.000
0.1
0.1
0.1
0.1
0.1
6.500
0.1
0.1
0.1
0.1
0.1
7.000
0.1
0.1
0.1
0.1
0.1
7.500
0.1
0.1
0.1
0.1
0.1
8.000
0.1
0.1
0.1
0.1
0.1
8.500
0.1
0.1
0.1
0.1
0.1
9.000
0.1
0.2
0.2
0.2
0.2
9.500
0.2
0.2
0.2
0.2
0.2
10.000
0.2
0.2
0.2
0.2
0.2
10.500
0.2
0.2
0.2
0.2
0.2
11.000
0.2
0.2
0.3
0.3
0.3
11.500
0.3
0.3
0.4
0.4
0.6
12.000
0.7
0.7
0.7
0.7
0.7
12.500
0.7
0.7
0.8
0.8
0.8
13.000
0.8
0.8
0.8
0.8
0.8
13.500
0.8
0.8
0.8
0.8
0.8
14.000
0.8
0.8
0.8
0.8
0.8
14.500
0.8
0.8
0.8
0.8
0.9
15.000
0.9
0.9
0.9
0.9
0.9
15.500
0.9
0.9
0.9
0.9
0.9
16.000
0.9
0.9
0.9
0.9
0.9
16.500
0.9
0.9
0.9
0.9
0.9
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 WQ.ppc Center [10.02.00.01]
2/11/2022 27 Siemon Company Drive Suite 200 W Page 2 of 12
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve Return Event: 1 years
Label: Union County Storm Event: TypeII 24hr (1.0 in)
Scenario: Union County - Synthetic Curve, 1 yrs
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
17.000
0.9
0.9
0.9
0.9
0.9
17.500
0.9
0.9
0.9
0.9
0.9
18.000
0.9
0.9
0.9
0.9
0.9
18.500
0.9
0.9
0.9
0.9
0.9
19.000
0.9
0.9
0.9
0.9
0.9
19.500
0.9
0.9
0.9
0.9
1.0
20.000
1.0
1.0
1.0
1.0
1.0
20.500
1.0
1.0
1.0
1.0
1.0
21.000
1.0
1.0
1.0
1.0
1.0
21.500
1.0
1.0
1.0
1.0
1.0
22.000
1.0
1.0
1.0
1.0
1.0
22.500
1.0
1.0
1.0
1.0
1.0
23.000
1.0
1.0
1.0
1.0
1.0
23.500
1.0
1.0
1.0
1.0
1.0
24.000
1.0
(N/A)
(N/A)
(N/A)
(N/A)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 WQ.ppc Center [10.02.00.01]
2/11/2022 27 Siemon Company Drive Suite 200 W Page 3 of 12
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time of Concentration Calculations
Label: POST -AREA
Scenario: Union County - Synthetic Curve, 1 yrs
Time of Concentration Results
Segment #1: User Defined Tc
Time of Concentration 0.083 hours
Time of Concentration (Composite)
Time of Concentration 0.083 hours
(Composite)
Return Event: 1 years
Storm Event: TypeII 24hr (1.0 in)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 WQ.ppc Center [10.02.00.01]
2/11/2022 27 Siemon Company Drive Suite 200 W Page 4 of 12
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time of Concentration Calculations Return Event: 1 years
Label: POST -AREA Storm Event: TypeII 24hr (1.0 in)
Scenario: Union County - Synthetic Curve, 1 yrs
==== User Defined
Tc = Value entered by user
Where: Tc= Time of concentration, hours
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 WQ.ppc Center [10.02.00.01]
2/11/2022 27 Siemon Company Drive Suite 200 W Page 5 of 12
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Runoff CN-Area
Label: POST -AREA
Scenario: Union County - Synthetic Curve, 1 yrs
Runoff Curve Number Data
Return Event: 1 years
Storm Event: TypeII 24hr (1.0 in)
Soil/Surface Description CN Area C UC Adjusted CN
(acres) (%) (%)
Impervious Areas - Paved parking lots,
98.000
5.450
0.0
0.0
98.000
roofs, driveways, Streets and roads
COMPOSITE AREA & WEIGHTED CN --->
(N/A)
5.450
(N/A)
(N/A)
98.000
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 WQ.ppc Center [10.02.00.01]
2/11/2022 27 Siemon Company Drive Suite 200 W Page 6 of 12
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Elevation -Area Volume Curve
Label: BMP-1
Scenario: Union County - Synthetic Curve, 1 yrs
Return Event: 1 years
Storm Event: TypeII 24hr (1.0 in)
Elevation Planimeter Area Al+A2+sgr(Al*A Volume Volume (Total)
(ft) (ftz) (acres) 2) (ft3) (ft3)
(acres)
569.00
0.0
0.123
0.000
0.000
0.000
569.50
0.0
0.143
0.399
2,894.000
2,894.000
570.00
0.0
0.161
0.456
3,309.000
6,203.000
571.00
0.0
0.185
0.519
7,530.000
13,732.000
572.00
0.0
0.212
0.595
8,640.000
22,372.000
573.00
0.0
0.239
0.676
9,817.000
32,189.000
574.00
0.0
0.268
0.760
11,036.000
43,226.000
575.00
0.0
0.298
0.849
12,322.000
55,547.000
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 WQ.ppc Center [10.02.00.01]
2/11/2022 27 Siemon Company Drive Suite 200 W Page 7 of 12
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Outlet Input Data Return Event: 1 years
Label: Riser-1 Storm Event: TypeII 24hr (1.0 in)
Scenario: Union County - Synthetic Curve, 1 yrs
Requested Pond Water Surface Elevations
Minimum (Headwater) 569.00 ft
Increment (Headwater) 0.50 ft
Maximum (Headwater) 575.00 ft
Outlet Connectivity
Structure Type Outlet ID Direction Outfall E1 E2
(ft) (ft)
Inlet Box
RO
Forward
CO
574.15
575.00
Orifice -Circular
Orifice -
Forward
CO
569.00
575.00
WQ
Culvert -Circular
CO
Forward
TW
566.00
575.00
Tailwater Settings
Tailwater
(N/A)
(N/A)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 WQ.ppc Center [10.02.00.01]
2/11/2022 27 Siemon Company Drive Suite 200 W Page 8 of 12
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Outlet Input Data
Label: Riser-1
Scenario: Union County - Synthetic Curve, 1 yrs
Return Event: 1 years
Storm Event: TypeII 24hr (1.0 in)
Structure ID: RO
Structure Type: Inlet Box
Number of Openings
1
Elevation
574.15 ft
Orifice Area
16.0 ftz
Orifice Coefficient
0.600
Weir Length
16.00 ft
Weir Coefficient
3.00 (ft^0.5)/s
K Reverse
1.000
Manning's n
0.000
Kev, Charged Riser
0.000
Weir Submergence
False
Orifice H to crest
False
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 WQ.ppc Center [10.02.00.01]
2/11/2022 27 Siemon Company Drive Suite 200 W Page 9 of 12
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Outlet Input Data
Return Event: 1 years
Label: Riser-1
Storm Event: TypeII 24hr (1.0 in)
Scenario: Union County - Synthetic Curve, 1 yrs
Structure ID: CO
Structure Type: Culvert -Circular
Number of Barrels
1
Diameter
30.0 in
Length
78.43 ft
Length (Computed Barrel)
78.74 ft
Slope (Computed)
0.089 ft/ft
Outlet Control Data
Manning's n
0.013
Ke
0.200
Kb
0.009
Kr
0.000
Convergence Tolerance
0.00 ft
Inlet Control Data
Equation Form
Form 1
K
0.0045
M
2.0000
C
0.0317
Y
0.6900
T1 ratio (HW/D)
1.051
T2 ratio (HW/D)
1.153
Slope Correction Factor
-0.500
Use unsubmerged inlet control 0 equation below T1
elevation.
Use submerged inlet control 0 equation above T2
elevation
In transition zone between unsubmerged and submerged
inlet control,
interpolate between flows at T1 & T2...
T1 Elevation 568.63 ft T1 Flow 27.16 ft3/s
T2 Elevation 568.88 ft T2 Flow 31.05 ft3/s
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 WQ.ppc Center [10.02.00.01]
2/11/2022 27 Siemon Company Drive Suite 200 W Page 10 of 12
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Outlet Input Data
Label: Riser-1
Scenario: Union County - Synthetic Curve, 1 yrs
Return Event: 1 years
Storm Event: TypeII 24hr (1.0 in)
Structure ID: Orifice - WQ
Structure Type: Orifice -Circular
Number of Openings
1
Elevation
569.00 ft
Orifice Diameter
1.5 in
Orifice Coefficient
0.600
Structure ID: TW
Structure Type: TW Setup, DS Channel
Tailwater Type
Free Outfall
Convergence Tolerances
Maximum Iterations
40
Tailwater Tolerance
0.01 ft
(Minimum)
Tailwater Tolerance
0.50 ft
(Maximum)
Headwater Tolerance
0.01 ft
(Minimum)
Headwater Tolerance
0.50 ft
(Maximum)
Flow Tolerance (Minimum)
0.001 ft3/s
Flow Tolerance (Maximum)
10.000 ft3/s
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 WQ.ppc Center [10.02.00.01]
2/11/2022 27 Siemon Company Drive Suite 200 W Page 11 of 12
Watertown, CT 06795 USA +1-203-755-1666
Index
BMP-1 (Elevation -Area Volume Curve, 1 years (Union County - Synthetic Curve, 1
yrs))... 7
Master Network Summary ... 1
POST -AREA (Runoff CN-Area, 1 years (Union County - Synthetic Curve, 1 yrs))... 6
POST -AREA (Time of Concentration Calculations, 1 years (Union County - Synthetic
Curve, 1 yrs))... 4, 5
Riser-1 (Outlet Input Data, 1 years (Union County - Synthetic Curve, 1 yrs))... 8, 9,
10, 11
U
Union County (Time -Depth Curve, 1 years (Union County - Synthetic Curve, 1
yrs))... 2, 3
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 WQ.ppc Center [10.02.00.01]
2/11/2022 27 Siemon Company Drive Suite 200 W Page 12 of 12
Watertown, CT 06795 USA +1-203-755-1666
BMP 1 WQ
12,500.000
11,250.000
10,000.000
8,750.000
+, 7,500.000
6,250.000
5,000.000
3,750.000
2,500.000
1,250.000
0.000 20.000 40.000 60.000 80.000 100.000 120.00,
Time (hours)
BMP-1 - Union County - Synthetic Curve, 1 yrs - Volume I
Table of Contents
Master Network Summary
Union County
Time -Depth Curve, 2 years (Union County - Synthetic Curve, 2 3
yrs)
Time -Depth Curve, 10 years (Union County - Synthetic Curve, 5
10 yrs)
Time -Depth Curve, 25 years (Union County - Synthetic Curve, 7
25 yrs)
Time -Depth Curve, 50 years (Union County - Synthetic Curve, 9
50 yrs)
Time -Depth Curve, 100 years (Union County - Synthetic Curve, 11
100 yrs)
POST -AREA Time of Concentration Calculations, 2 years (Union County - 13
Synthetic Curve, 2 yrs)
POST -AREA YRunoffCN-Area, 2 years (Union County - Synthetic Curve, 2 15
Elevation -Area Volume Curve, 2 years (Union County
BMP 1 Synthetic Curve, 2 yrs) 16
Riser-1 Outlet Input Data, 2 years (Union County - Synthetic Curve, 2 17
yrs)
Subsection: Master Network Summary
Catchments Summary
Label Scenario Return Hydrograph Time to Peak Peak Flow
Event Volume (hours) (ft3/s)
(years) (ft3)
POST -AREA
Union County -
2
35,410.000
11.930
15.30
Synthetic Curve, 2
yrs
POST -AREA
Union County -
10
62,570.000
11.920
27.02
Synthetic Curve, 10
yrs
POST -AREA
Union County -
25
80,448.000
11.920
34.40
Synthetic Curve, 25
yrs
POST -AREA
Union County -
50
95,060.000
11.920
40.41
Synthetic Curve, 50
yrs
POST -AREA
Union County -
100
111,736.000
11.920
47.17
Synthetic Curve, 100
yrs
Node Summary
Label Scenario Return Hydrograph Time to Peak Peak Flow
Event Volume (hours) (ft3/s)
(years) (ft3)
OUTFALL
Union County -
2
25,763.000
12.110
3.81
Synthetic Curve, 2
yrs
OUTFALL
Union County -
10
52,897.000
12.070
10.97
Synthetic Curve, 10
yrs
OUTFALL
Union County -
25
70,765.000
12.070
14.49
Synthetic Curve, 25
yrs
OUTFALL
Union County -
50
85,369.000
12.070
16.50
Synthetic Curve, 50
yrs
OUTFALL
Union County -
100
102,038.000
12.070
19.59
Synthetic Curve, 100
yrs
Pond Summary
Label Scenario
BMP-1 (IN) I Union County -
Synthetic
Curve, 2 yrs
Return Hydrograph Time to Peak Peak Flow
Event Volume (hours) (ft3/s)
(years) (ft3)
2 i 35,410.000 i 11.930 i 15.30
Maximum Maximum
Water Pond Storage
Surface (ft3)
Elevation
(ft)
(N/A) (N/A)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 1 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Master Network Summary
Pond Summary
Label
Scenario
Return
Hydrograph
Time to Peak
Peak Flow
Maximum
Maximum
Event
Volume
(hours)
(ft3/s)
Water
Pond Storage
(years)
(ft3)
Surface
(ft3)
Elevation
(ft)
BMP-1
Union County -
2
25,763.000
12.110
3.81
571.26
15,828.000
(OUT)
Synthetic
Curve, 2 yrs
BMP-1 (IN)
Union County -
10
62,570.000
11.920
27.02
(N/A)
(N/A)
Synthetic
Curve, 10 yrs
BMP-1
Union County -
10
52,897.000
12.070
10.97
572.37
25,834.000
(OUT)
Synthetic
Curve, 10 yrs
BMP-1 (IN)
Union County -
25
80,448.000
11.920
34.40
(N/A)
(N/A)
Synthetic
Curve, 25 yrs
BMP-1
Union County -
25
70,765.000
12.070
14.49
572.99
32,059.000
(OUT)
Synthetic
Curve, 25 yrs
BMP-1 (IN)
Union County -
50
95,060.000
11.920
40.41
(N/A)
(N/A)
Synthetic
Curve, 50 yrs
BMP-1
Union County -
50
85,369.000
12.070
16.50
573.48
37,299.000
(OUT)
Synthetic
Curve, 50 yrs
BMP-1 (IN)
Union County -
100
111,736.000
11.920
47.17
(N/A)
(N/A)
Synthetic
Curve, 100 yrs
BMP-1
Union County -
100
102,038.000
12.070
19.59
573.98
43,029.000
(OUT)
Synthetic
Curve, 100 yrs
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 2 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve
Label: Union County
Scenario: Union County - Synthetic Curve, 2 yrs
Time -Depth Curve: TypeII 24hr (3.6 in)
Label TypeII 24hr (3.6
in)
Start Time 0.000 hours
Increment 0.100 hours
End Time 24.000 hours
Return Event 2 years
Return Event: 2 years
Storm Event: TypeII 24hr (3.6 in)
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
0.000
0.0
0.0
0.0
0.0
0.0
0.500
0.0
0.0
0.0
0.0
0.0
1.000
0.0
0.0
0.0
0.0
0.1
1.500
0.1
0.1
0.1
0.1
0.1
2.000
0.1
0.1
0.1
0.1
0.1
2.500
0.1
0.1
0.1
0.1
0.1
3.000
0.1
0.1
0.1
0.1
0.1
3.500
0.1
0.2
0.2
0.2
0.2
4.000
0.2
0.2
0.2
0.2
0.2
4.500
0.2
0.2
0.2
0.2
0.2
5.000
0.2
0.2
0.2
0.2
0.3
5.500
0.3
0.3
0.3
0.3
0.3
6.000
0.3
0.3
0.3
0.3
0.3
6.500
0.3
0.3
0.3
0.3
0.3
7.000
0.4
0.4
0.4
0.4
0.4
7.500
0.4
0.4
0.4
0.4
0.4
8.000
0.4
0.4
0.4
0.5
0.5
8.500
0.5
0.5
0.5
0.5
0.5
9.000
0.5
0.5
0.6
0.6
0.6
9.500
0.6
0.6
0.6
0.6
0.6
10.000
0.7
0.7
0.7
0.7
0.7
10.500
0.7
0.8
0.8
0.8
0.8
11.000
0.8
0.9
0.9
0.9
1.0
11.500
1.0
1.1
1.3
1.6
2.0
12.000
2.4
2.5
2.5
2.6
2.6
12.500
2.6
2.7
2.7
2.7
2.8
13.000
2.8
2.8
2.8
2.8
2.9
13.500
2.9
2.9
2.9
2.9
2.9
14.000
3.0
3.0
3.0
3.0
3.0
14.500
3.0
3.0
3.0
3.1
3.1
15.000
3.1
3.1
3.1
3.1
3.1
15.500
3.1
3.1
3.1
3.2
3.2
16.000
3.2
3.2
3.2
3.2
3.2
16.500
3.2
3.2
3.2
3.2
3.2
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 3 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve Return Event: 2 years
Label: Union County Storm Event: TypeII 24hr (3.6 in)
Scenario: Union County - Synthetic Curve, 2 yrs
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
17.000
3.2
3.3
3.3
3.3
3.3
17.500
3.3
3.3
3.3
3.3
3.3
18.000
3.3
3.3
3.3
3.3
3.3
18.500
3.3
3.4
3.4
3.4
3.4
19.000
3.4
3.4
3.4
3.4
3.4
19.500
3.4
3.4
3.4
3.4
3.4
20.000
3.4
3.4
3.4
3.4
3.4
20.500
3.5
3.5
3.5
3.5
3.5
21.000
3.5
3.5
3.5
3.5
3.5
21.500
3.5
3.5
3.5
3.5
3.5
22.000
3.5
3.5
3.5
3.5
3.5
22.500
3.5
3.5
3.5
3.6
3.6
23.000
3.6
3.6
3.6
3.6
3.6
23.500
3.6
3.6
3.6
3.6
3.6
24.000
3.6
(N/A)
(N/A)
(N/A)
(N/A)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 4 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve
Label: Union County
Scenario: Union County - Synthetic Curve, 10 yrs
Time -Depth Curve: TypeII 24hr (5.2 in)
Label TypeII 24hr (5.2
in)
Start Time 0.000 hours
Increment 0.100 hours
End Time 24.000 hours
Return Event 10 years
Return Event: 10 years
Storm Event: TypeII 24hr (5.2 in)
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
0.000
0.0
0.0
0.0
0.0
0.0
0.500
0.0
0.0
0.0
0.0
0.0
1.000
0.1
0.1
0.1
0.1
0.1
1.500
0.1
0.1
0.1
0.1
0.1
2.000
0.1
0.1
0.1
0.1
0.1
2.500
0.1
0.2
0.2
0.2
0.2
3.000
0.2
0.2
0.2
0.2
0.2
3.500
0.2
0.2
0.2
0.2
0.2
4.000
0.2
0.3
0.3
0.3
0.3
4.500
0.3
0.3
0.3
0.3
0.3
5.000
0.3
0.3
0.3
0.4
0.4
5.500
0.4
0.4
0.4
0.4
0.4
6.000
0.4
0.4
0.4
0.4
0.5
6.500
0.5
0.5
0.5
0.5
0.5
7.000
0.5
0.5
0.5
0.5
0.6
7.500
0.6
0.6
0.6
0.6
0.6
8.000
0.6
0.6
0.6
0.7
0.7
8.500
0.7
0.7
0.7
0.7
0.7
9.000
0.8
0.8
0.8
0.8
0.8
9.500
0.8
0.9
0.9
0.9
0.9
10.000
0.9
1.0
1.0
1.0
1.0
10.500
1.1
1.1
1.1
1.2
1.2
11.000
1.2
1.3
1.3
1.4
1.4
11.500
1.5
1.6
1.8
2.2
3.0
12.000
3.4
3.5
3.6
3.7
3.8
12.500
3.8
3.9
3.9
3.9
4.0
13.000
4.0
4.0
4.1
4.1
4.1
13.500
4.2
4.2
4.2
4.2
4.2
14.000
4.3
4.3
4.3
4.3
4.3
14.500
4.4
4.4
4.4
4.4
4.4
15.000
4.4
4.5
4.5
4.5
4.5
15.500
4.5
4.5
4.5
4.6
4.6
16.000
4.6
4.6
4.6
4.6
4.6
16.500
4.6
4.6
4.7
4.7
4.7
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 5 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve Return Event: 10 years
Label: Union County Storm Event: TypeII 24hr (5.2 in)
Scenario: Union County - Synthetic Curve, 10 yrs
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
17.000
4.7
4.7
4.7
4.7
4.7
17.500
4.7
4.8
4.8
4.8
4.8
18.000
4.8
4.8
4.8
4.8
4.8
18.500
4.8
4.8
4.9
4.9
4.9
19.000
4.9
4.9
4.9
4.9
4.9
19.500
4.9
4.9
4.9
4.9
4.9
20.000
5.0
5.0
5.0
5.0
5.0
20.500
5.0
5.0
5.0
5.0
5.0
21.000
5.0
5.0
5.0
5.0
5.0
21.500
5.0
5.1
5.1
5.1
5.1
22.000
5.1
5.1
5.1
5.1
5.1
22.500
5.1
5.1
5.1
5.1
5.1
23.000
5.1
5.1
5.2
5.2
5.2
23.500
5.2
5.2
5.2
5.2
5.2
24.000
5.2
(N/A)
(N/A)
(N/A)
(N/A)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 6 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve
Label: Union County
Scenario: Union County - Synthetic Curve, 25 yrs
Time -Depth Curve: TypeII 24hr (6.2 in)
Label TypeII 24hr (6.2
in)
Start Time 0.000 hours
Increment 0.100 hours
End Time 24.000 hours
Return Event 25 years
Return Event: 25 years
Storm Event: TypeII 24hr (6.2 in)
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
0.000
0.0
0.0
0.0
0.0
0.0
0.500
0.0
0.0
0.0
0.1
0.1
1.000
0.1
0.1
0.1
0.1
0.1
1.500
0.1
0.1
0.1
0.1
0.1
2.000
0.1
0.1
0.2
0.2
0.2
2.500
0.2
0.2
0.2
0.2
0.2
3.000
0.2
0.2
0.2
0.2
0.2
3.500
0.3
0.3
0.3
0.3
0.3
4.000
0.3
0.3
0.3
0.3
0.3
4.500
0.3
0.4
0.4
0.4
0.4
5.000
0.4
0.4
0.4
0.4
0.4
5.500
0.4
0.5
0.5
0.5
0.5
6.000
0.5
0.5
0.5
0.5
0.5
6.500
0.6
0.6
0.6
0.6
0.6
7.000
0.6
0.6
0.6
0.7
0.7
7.500
0.7
0.7
0.7
0.7
0.7
8.000
0.7
0.8
0.8
0.8
0.8
8.500
0.8
0.8
0.9
0.9
0.9
9.000
0.9
0.9
1.0
1.0
1.0
9.500
1.0
1.0
1.1
1.1
1.1
10.000
1.1
1.1
1.2
1.2
1.2
10.500
1.3
1.3
1.3
1.4
1.4
11.000
1.5
1.5
1.6
1.6
1.7
11.500
1.8
1.9
2.2
2.7
3.5
12.000
4.1
4.2
4.3
4.4
4.5
12.500
4.6
4.6
4.7
4.7
4.7
13.000
4.8
4.8
4.9
4.9
4.9
13.500
5.0
5.0
5.0
5.0
5.1
14.000
5.1
5.1
5.1
5.2
5.2
14.500
5.2
5.2
5.2
5.3
5.3
15.000
5.3
5.3
5.3
5.3
5.4
15.500
5.4
5.4
5.4
5.4
5.4
16.000
5.5
5.5
5.5
5.5
5.5
16.500
5.5
5.5
5.6
5.6
5.6
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 7 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve Return Event: 25 years
Label: Union County Storm Event: TypeII 24hr (6.2 in)
Scenario: Union County - Synthetic Curve, 25 yrs
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
17.000
5.6
5.6
5.6
5.6
5.6
17.500
5.7
5.7
5.7
5.7
5.7
18.000
5.7
5.7
5.7
5.7
5.8
18.500
5.8
5.8
5.8
5.8
5.8
19.000
5.8
5.8
5.8
5.8
5.9
19.500
5.9
5.9
5.9
5.9
5.9
20.000
5.9
5.9
5.9
5.9
5.9
20.500
5.9
6.0
6.0
6.0
6.0
21.000
6.0
6.0
6.0
6.0
6.0
21.500
6.0
6.0
6.0
6.0
6.0
22.000
6.1
6.1
6.1
6.1
6.1
22.500
6.1
6.1
6.1
6.1
6.1
23.000
6.1
6.1
6.1
6.2
6.2
23.500
6.2
6.2
6.2
6.2
6.2
24.000
6.2
(N/A)
(N/A)
(N/A)
(N/A)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 8 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve
Label: Union County
Scenario: Union County - Synthetic Curve, 50 yrs
Time -Depth Curve: TypeII 24hr (7.0 in)
Label TypeII 24hr (7.0
in)
Start Time 0.000 hours
Increment 0.100 hours
End Time 24.000 hours
Return Event 50 years
Return Event: 50 years
Storm Event: TypeII 24hr (7.0 in)
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
0.000
0.0
0.0
0.0
0.0
0.0
0.500
0.0
0.0
0.1
0.1
0.1
1.000
0.1
0.1
0.1
0.1
0.1
1.500
0.1
0.1
0.1
0.1
0.1
2.000
0.2
0.2
0.2
0.2
0.2
2.500
0.2
0.2
0.2
0.2
0.2
3.000
0.2
0.3
0.3
0.3
0.3
3.500
0.3
0.3
0.3
0.3
0.3
4.000
0.3
0.3
0.4
0.4
0.4
4.500
0.4
0.4
0.4
0.4
0.4
5.000
0.4
0.5
0.5
0.5
0.5
5.500
0.5
0.5
0.5
0.5
0.5
6.000
0.6
0.6
0.6
0.6
0.6
6.500
0.6
0.6
0.7
0.7
0.7
7.000
0.7
0.7
0.7
0.7
0.8
7.500
0.8
0.8
0.8
0.8
0.8
8.000
0.8
0.9
0.9
0.9
0.9
8.500
0.9
0.9
1.0
1.0
1.0
9.000
1.0
1.1
1.1
1.1
1.1
9.500
1.1
1.2
1.2
1.2
1.2
10.000
1.3
1.3
1.3
1.4
1.4
10.500
1.4
1.5
1.5
1.5
1.6
11.000
1.6
1.7
1.8
1.8
1.9
11.500
2.0
2.1
2.5
3.0
4.0
12.000
4.6
4.8
4.9
5.0
5.1
12.500
5.1
5.2
5.3
5.3
5.4
13.000
5.4
5.4
5.5
5.5
5.6
13.500
5.6
5.6
5.7
5.7
5.7
14.000
5.7
5.8
5.8
5.8
5.8
14.500
5.9
5.9
5.9
5.9
6.0
15.000
6.0
6.0
6.0
6.0
6.1
15.500
6.1
6.1
6.1
6.1
6.1
16.000
6.2
6.2
6.2
6.2
6.2
16.500
6.2
6.3
6.3
6.3
6.3
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 9 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve Return Event: 50 years
Label: Union County Storm Event: TypeII 24hr (7.0 in)
Scenario: Union County - Synthetic Curve, 50 yrs
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
17.000
6.3
6.3
6.3
6.4
6.4
17.500
6.4
6.4
6.4
6.4
6.4
18.000
6.4
6.5
6.5
6.5
6.5
18.500
6.5
6.5
6.5
6.5
6.6
19.000
6.6
6.6
6.6
6.6
6.6
19.500
6.6
6.6
6.6
6.6
6.7
20.000
6.7
6.7
6.7
6.7
6.7
20.500
6.7
6.7
6.7
6.7
6.7
21.000
6.8
6.8
6.8
6.8
6.8
21.500
6.8
6.8
6.8
6.8
6.8
22.000
6.8
6.8
6.9
6.9
6.9
22.500
6.9
6.9
6.9
6.9
6.9
23.000
6.9
6.9
6.9
6.9
7.0
23.500
7.0
7.0
7.0
7.0
7.0
24.000
7.0
(N/A)
(N/A)
(N/A)
(N/A)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 10 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve
Label: Union County
Scenario: Union County - Synthetic Curve, 100 yrs
Time -Depth Curve: TypeII 24hr (7.9 in)
Label TypeII 24hr (7.9
in)
Start Time 0.000 hours
Increment 0.100 hours
End Time 24.000 hours
Return Event 100 years
Return Event: 100 years
Storm Event: TypeII 24hr (7.9 in)
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
0.000
0.0
0.0
0.0
0.0
0.0
0.500
0.0
0.0
0.1
0.1
0.1
1.000
0.1
0.1
0.1
0.1
0.1
1.500
0.1
0.1
0.1
0.2
0.2
2.000
0.2
0.2
0.2
0.2
0.2
2.500
0.2
0.2
0.2
0.3
0.3
3.000
0.3
0.3
0.3
0.3
0.3
3.500
0.3
0.3
0.3
0.4
0.4
4.000
0.4
0.4
0.4
0.4
0.4
4.500
0.4
0.4
0.5
0.5
0.5
5.000
0.5
0.5
0.5
0.5
0.5
5.500
0.6
0.6
0.6
0.6
0.6
6.000
0.6
0.6
0.7
0.7
0.7
6.500
0.7
0.7
0.7
0.8
0.8
7.000
0.8
0.8
0.8
0.8
0.8
7.500
0.9
0.9
0.9
0.9
0.9
8.000
0.9
1.0
1.0
1.0
1.0
8.500
1.0
1.1
1.1
1.1
1.1
9.000
1.2
1.2
1.2
1.2
1.3
9.500
1.3
1.3
1.3
1.4
1.4
10.000
1.4
1.5
1.5
1.5
1.6
10.500
1.6
1.7
1.7
1.7
1.8
11.000
1.9
1.9
2.0
2.1
2.1
11.500
2.2
2.4
2.8
3.4
4.5
12.000
5.2
5.4
5.5
5.6
5.7
12.500
5.8
5.9
5.9
6.0
6.0
13.000
6.1
6.1
6.2
6.2
6.3
13.500
6.3
6.3
6.4
6.4
6.4
14.000
6.5
6.5
6.5
6.6
6.6
14.500
6.6
6.6
6.7
6.7
6.7
15.000
6.7
6.8
6.8
6.8
6.8
15.500
6.9
6.9
6.9
6.9
6.9
16.000
7.0
7.0
7.0
7.0
7.0
16.500
7.0
7.1
7.1
7.1
7.1
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 11 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve Return Event: 100 years
Label: Union County Storm Event: TypeII 24hr (7.9 in)
Scenario: Union County - Synthetic Curve, 100 yrs
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
17.000
7.1
7.1
7.2
7.2
7.2
17.500
7.2
7.2
7.2
7.2
7.3
18.000
7.3
7.3
7.3
7.3
7.3
18.500
7.3
7.4
7.4
7.4
7.4
19.000
7.4
7.4
7.4
7.4
7.5
19.500
7.5
7.5
7.5
7.5
7.5
20.000
7.5
7.5
7.5
7.6
7.6
20.500
7.6
7.6
7.6
7.6
7.6
21.000
7.6
7.6
7.6
7.7
7.7
21.500
7.7
7.7
7.7
7.7
7.7
22.000
7.7
7.7
7.7
7.7
7.8
22.500
7.8
7.8
7.8
7.8
7.8
23.000
7.8
7.8
7.8
7.8
7.8
23.500
7.9
7.9
7.9
7.9
7.9
24.000
7.9
(N/A)
(N/A)
(N/A)
(N/A)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 12 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time of Concentration Calculations
Label: POST -AREA
Scenario: Union County - Synthetic Curve, 2 yrs
Time of Concentration Results
Segment #1: User Defined Tc
Time of Concentration 0.083 hours
Time of Concentration (Composite)
Time of Concentration 0.083 hours
(Composite)
Return Event: 2 years
Storm Event: TypeII 24hr (3.6 in)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 13 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time of Concentration Calculations Return Event: 2 years
Label: POST -AREA Storm Event: TypeII 24hr (3.6 in)
Scenario: Union County - Synthetic Curve, 2 yrs
==== User Defined
Tc = Value entered by user
Where: Tc= Time of concentration, hours
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 14 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Runoff CN-Area
Label: POST -AREA
Scenario: Union County - Synthetic Curve, 2 yrs
Runoff Curve Number Data
Return Event: 2 years
Storm Event: TypeII 24hr (3.6 in)
Soil/Surface Description CN Area C UC Adjusted CN
(acres) (%) (%)
Impervious Areas - Paved parking lots,
98.000
2.980
0.0
0.0
98.000
roofs, driveways, Streets and roads
Open space (Lawns,parks etc.) - Good
61.000
2.470
0.0
0.0
61.000
condition; grass cover > 75% - Soil B
COMPOSITE AREA & WEIGHTED CN --->
(N/A)
5.450
(N/A)
(N/A)
81.231
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 15 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Elevation -Area Volume Curve
Label: BMP-1
Scenario: Union County - Synthetic Curve, 2 yrs
Return Event: 2 years
Storm Event: TypeII 24hr (3.6 in)
Elevation Planimeter Area Al+A2+sgr(Al*A Volume Volume (Total)
(ft) (ftz) (acres) 2) (ft3) (ft3)
(acres)
569.00
0.0
0.123
0.000
0.000
0.000
569.50
0.0
0.143
0.399
2,894.000
2,894.000
570.00
0.0
0.161
0.456
3,309.000
6,203.000
571.00
0.0
0.185
0.519
7,530.000
13,732.000
572.00
0.0
0.212
0.595
8,640.000
22,372.000
573.00
0.0
0.239
0.676
9,817.000
32,189.000
574.00
0.0
0.268
0.760
11,036.000
43,226.000
575.00
0.0
0.298
0.849
12,322.000
55,547.000
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 16 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Outlet Input Data Return Event: 2 years
Label: Riser-1 Storm Event: TypeII 24hr (3.6 in)
Scenario: Union County - Synthetic Curve, 2 yrs
Requested Pond Water Surface Elevations
Minimum (Headwater) 569.00 ft
Increment (Headwater) 0.50 ft
Maximum (Headwater) 575.00 ft
Outlet Connectivity
Structure Type Outlet ID Direction Outfall E1 E2
(ft) (ft)
Inlet Box
RO
Forward
CO
573.90
575.00
Orifice -Circular
Orifice -
Forward
CO
569.00
575.00
WQ
Culvert -Circular
CO
Forward
TW
566.00
575.00
Orifice -Area
Orifice -
Forward
TW
570.85
575.00
2yr
Orifice -Area
Orifice - 10
Forward
TW
572.00
575.00
yr
Rectangular Weir
Weir - 1
Forward
TW
574.00
575.00
Tailwater Settings
Tailwater
I
I
I (N/A)
(N/A)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 17 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Outlet Input Data
Label: Riser-1
Scenario: Union County - Synthetic Curve, 2 yrs
Return Event: 2 years
Storm Event: TypeII 24hr (3.6 in)
Structure ID: RO
Structure Type: Inlet Box
Number of Openings
1
Elevation
573.90 ft
Orifice Area
16.0 ftz
Orifice Coefficient
0.600
Weir Length
16.00 ft
Weir Coefficient
3.00 (ft^0.5)/s
K Reverse
1.000
Manning's n
0.000
Kev, Charged Riser
0.000
Weir Submergence
False
Orifice H to crest
False
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 18 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Outlet Input Data
Return Event: 2 years
Label: Riser-1
Storm Event: TypeII 24hr (3.6 in)
Scenario: Union County - Synthetic Curve, 2 yrs
Structure ID: CO
Structure Type: Culvert -Circular
Number of Barrels
1
Diameter
30.0 in
Length
78.43 ft
Length (Computed Barrel)
78.74 ft
Slope (Computed)
0.089 ft/ft
Outlet Control Data
Manning's n
0.013
Ke
0.200
Kb
0.009
Kr
0.000
Convergence Tolerance
0.00 ft
Inlet Control Data
Equation Form
Form 1
K
0.0045
M
2.0000
C
0.0317
Y
0.6900
T1 ratio (HW/D)
1.051
T2 ratio (HW/D)
1.153
Slope Correction Factor
-0.500
Use unsubmerged inlet control 0 equation below T1
elevation.
Use submerged inlet control 0 equation above T2
elevation
In transition zone between unsubmerged and submerged
inlet control,
interpolate between flows at T1 & T2...
T1 Elevation 568.63 ft T1 Flow 27.16 ft3/s
T2 Elevation 568.88 ft T2 Flow 31.05 ft3/s
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 19 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Outlet Input Data
Label: Riser-1
Scenario: Union County - Synthetic Curve, 2 yrs
BMP-1 POST.ppc
2/28/2022
Return Event: 2 years
Storm Event: TypeII 24hr (3.6 in)
Structure ID: Orifice - WQ
Structure Type: Orifice -Circular
Number of Openings
1
Elevation
569.00 ft
Orifice Diameter
1.5 in
Orifice Coefficient
0.600
Structure ID: Orifice - 2yr
Structure Type: Orifice -Area
Number of Openings
1
Elevation
570.85 ft
Orifice Area
1.5 ftz
Top Elevation
571.35 ft
Datum Elevation
570.85 ft
Orifice Coefficient
0.600
Structure ID: Weir- 1
Structure Type: Rectangular Weir
Number of Openings
1
Elevation
574.00 ft
Weir Length
30.00 ft
Weir Coefficient
3.00 (ft^0.5)/s
Structure ID: Orifice - 10 yr
Structure Type: Orifice -Area
Number of Openings
1
Elevation
572.00 ft
Orifice Area
0.8 ftz
Top Elevation
572.25 ft
Datum Elevation
572.00 ft
Orifice Coefficient
0.600
Structure ID: TW
Structure Type: TW Setup, DS Channel
Tailwater Type
Free Outfall
Convergence Tolerances
Maximum Iterations
40
Tailwater Tolerance
0.01 ft
(Minimum)
Tailwater Tolerance
0.50 ft
(Maximum)
Headwater Tolerance
0.01 ft
(Minimum)
Bentley Systems, Inc. Haestad
Methods Solution
Center
27 Siemon Company Drive Suite 200 W
Watertown, CT 06795 USA +1-203-755-1666
Pond Pack CONNECT Edition
[10.02.00.01]
Page 20 of 22
Subsection: Outlet Input Data Return Event: 2 years
Label: Riser-1 Storm Event: TypeII 24hr (3.6 in)
Scenario: Union County - Synthetic Curve, 2 yrs
Convergence Tolerances
Headwater Tolerance 0.50 ft
(Maximum)
Flow Tolerance (Minimum) 0.001 ft3/s
Flow Tolerance (Maximum) 10.000 ft3/s
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 21 of 22
Watertown, CT 06795 USA +1-203-755-1666
Index
BMP-1 (Elevation -Area Volume Curve, 2 years (Union County - Synthetic Curve, 2
yrs))... 16
Master Network Summary ... 1, 2
POST -AREA (Runoff CN-Area, 2 years (Union County - Synthetic Curve, 2 yrs))... 15
POST -AREA (Time of Concentration Calculations, 2 years (Union County - Synthetic
Curve, 2 yrs))... 13, 14
Riser-1 (Outlet Input Data, 2 years (Union County - Synthetic Curve, 2 yrs))...17,
18, 19, 20, 21
U
Union County (Time -Depth Curve, 10 years (Union County -
Synthetic Curve, 10
yrs))... 5, 6
Union County (Time -Depth Curve, 100 years (Union County
- Synthetic Curve, 100
yrs))... 11, 12
Union County (Time -Depth Curve, 2 years (Union County - Synthetic Curve, 2
yrs))... 3, 4
Union County (Time -Depth Curve, 25 years (Union County -
Synthetic Curve, 25
yrs))... 7, 8
Union County (Time -Depth Curve, 50 years (Union County -
Synthetic Curve, 50
yrs))... 9, 10
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-1 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 22 of 22
Watertown, CT 06795 USA +1-203-755-1666
BMP-2 Calculations:
Project Name: The Bluffs at Wesley Chapel (BMP-2)
Project Number: 1021119
Design Requirements: 85% TSS REMOVAL
Given Information:
Land Use:
Residential
Drainage Area to Facility (Acres):
12.64
Meck. County (Minimum 10 Ac. Less than 10 Ac requires water balance computations)
Impervious Area (Acres):
4.03
Percent Impervious:
31.9%
Soil Type:
ChA, GsE, TbB2
Soil Group:
B/D
Curve Number (CN) Pre:
63
Curve Number (CN) Post:
73
Time of Concentration Pre (hour):
0.540
Time of Concentration Post (hour):
0.083
Design Storm Rainfall Depth (in):
1.0
(Typically 1")
Detention Time (Day):
2
Meck. County:
4 days - 85% TSS & 70% TP (Optimal Efficiency)
2 days - 60% TSS & 40% TP (Standard Efficiency)
4 days - 85% TSS & 0% TP (TSS - Only Efficiency)
NCDENR:
2 - 5 days - 85% TSS & 40% TP
Watershed:
Mountain and Piedmont
(85% TSS)
Efficiency:
NCDEN R
Wet Pond Design (NCDENR - 2007)
Project Name: The Bluffs at Wesley Chapel (BMP-2)
Job Number: 1021119
Step 1: Compute the water quality volume (WQV).
WQv (Ft) = (3630) X (RD) X (Rv) X (AD)
Where:
WQV = Water Quality Volume (Ft)
AD = Drainage Area to Wet Pond (acres).
Rv= Volumetric Runoff Coefficient = 0.05 + 0.9 (% Impervious)
Rp = Design Storm Rainfall Depth (in). Typically 1.0".
Percent Impervious =
32%
AD =
12.64 acres
Rp=
1.0 in
Rv =
0.34
WQv =
15,460 Ft3
Step 2: Determine Surface Area Requirements.
Average Permanent Pool Depth =®Feet
Percent Impervious = 32%
SA / DA Ratio = 1.08
Required Surface Area = 5,946 Ft2
Step 3: Preliminary Temporary Water Quality Drawdown Calculations
Pond Height above Orifice = 577.07 feet
Orifice Invert Elevation = 576.00 feet
Pond Surface Area at Height Above Orifice
= 29,393
square feet
Pond Surface Area at Orifice Invert Elevation
= 24,767
square feet
Orifice Diameter (D)
= 2.50
inches = 0.21 feet
Orifice Area (a)
= 0.0341
square feet
Average Surface Area (A)
= 27,080
square feet
Gravitational Constatnt (g)
= 32.2
ft/sec2
Head (H)
= 0.97
feet
Discharge Coefficient (C)
= 0.6
Time (t)
= 324,286
seconds = 3.75 days
Note:
The above calculation is based on the Bernoulli Equation where:
t ° x (0 - H°.5
; x a x (2g))
Step 4: Compute Site Hydraulic Input Parameters.
Condition
Area (Ac)
CN
Tc (hours)
Pre -developed
37.65
63
0.54
Post -developed
12.64
73
0.083
Results
Condition
Q1-year
Q10-year
Q25-year
Q50-year
Pre -developed
N/A
46.11
67.52
85.76
Post -developed
N/A
3.37
6.32
8.27
Table of Contents
Master Network Summary
Union County
Time -Depth Curve, 1 years (Union County - Synthetic Curve, 1
yrs)
POST -AREA
Time of Concentration Calculations, 1 years (Union County -
Synthetic Curve, 1 yrs)
POST -AREA
Runoff CN-Area, 1 years (Union County - Synthetic Curve, 1
yrs)
BMP-1
Elevation -Area Volume Curve, 1 years (Union County -
Synthetic Curve, 1 yrs)
Riser-1
Outlet Input Data, 1 years (Union County - Synthetic Curve, 1
yrs)
Subsection: Master Network Summary
Catchments Summary
Label Scenario Return Hydrograph Time to Peak Peak Flow
Event Volume (hours) (ft3/s)
(years) (ft3)
POST -AREA
Union County -
1
36,290.000
11.900
14.60
Synthetic Curve, 1
yrs
Node Summary
Label Scenario Return Hydrograph Time to Peak Peak Flow
Event Volume (hours) (ft3/s)
(years) (ft3)
OUTFALL
Union County -
1
34,040.000
20.200
0.16
Synthetic Curve, 1
yrs
Pond Summary
Label Scenario Return Hydrograph Time to Peak Peak Flow
Event Volume (hours) (ft3/s)
(years) (ft3)
Maximum
Maximum
Water
Pond Storage
Surface
(ft3)
Elevation
(ft)
BMP-1 (IN)
Union County -
1
36,290.000
11.900
14.60
(N/A)
(N/A)
Synthetic
Curve, 1 yrs
BMP-1
Union County -
1
34,040.000
20.200
0.16
577.07
29,218.000
(OUT)
Synthetic
Curve, 1 yrs
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 WQ.ppc Center [10.02.00.01]
2/22/2022 27 Siemon Company Drive Suite 200 W Page 1 of 12
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve
Label: Union County
Scenario: Union County - Synthetic Curve, 1 yrs
Time -Depth Curve: TypeII 24hr (1.0 in)
Label TypeII 24hr (1.0
in)
Start Time 0.000 hours
Increment 0.100 hours
End Time 24.000 hours
Return Event 1 years
Return Event: 1 years
Storm Event: TypeII 24hr (1.0 in)
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
0.000
0.0
0.0
0.0
0.0
0.0
0.500
0.0
0.0
0.0
0.0
0.0
1.000
0.0
0.0
0.0
0.0
0.0
1.500
0.0
0.0
0.0
0.0
0.0
2.000
0.0
0.0
0.0
0.0
0.0
2.500
0.0
0.0
0.0
0.0
0.0
3.000
0.0
0.0
0.0
0.0
0.0
3.500
0.0
0.0
0.0
0.0
0.0
4.000
0.0
0.0
0.1
0.1
0.1
4.500
0.1
0.1
0.1
0.1
0.1
5.000
0.1
0.1
0.1
0.1
0.1
5.500
0.1
0.1
0.1
0.1
0.1
6.000
0.1
0.1
0.1
0.1
0.1
6.500
0.1
0.1
0.1
0.1
0.1
7.000
0.1
0.1
0.1
0.1
0.1
7.500
0.1
0.1
0.1
0.1
0.1
8.000
0.1
0.1
0.1
0.1
0.1
8.500
0.1
0.1
0.1
0.1
0.1
9.000
0.1
0.2
0.2
0.2
0.2
9.500
0.2
0.2
0.2
0.2
0.2
10.000
0.2
0.2
0.2
0.2
0.2
10.500
0.2
0.2
0.2
0.2
0.2
11.000
0.2
0.2
0.3
0.3
0.3
11.500
0.3
0.3
0.4
0.4
0.6
12.000
0.7
0.7
0.7
0.7
0.7
12.500
0.7
0.7
0.8
0.8
0.8
13.000
0.8
0.8
0.8
0.8
0.8
13.500
0.8
0.8
0.8
0.8
0.8
14.000
0.8
0.8
0.8
0.8
0.8
14.500
0.8
0.8
0.8
0.8
0.9
15.000
0.9
0.9
0.9
0.9
0.9
15.500
0.9
0.9
0.9
0.9
0.9
16.000
0.9
0.9
0.9
0.9
0.9
16.500
0.9
0.9
0.9
0.9
0.9
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 WQ.ppc Center [10.02.00.01]
2/22/2022 27 Siemon Company Drive Suite 200 W Page 2 of 12
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve Return Event: 1 years
Label: Union County Storm Event: TypeII 24hr (1.0 in)
Scenario: Union County - Synthetic Curve, 1 yrs
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
17.000
0.9
0.9
0.9
0.9
0.9
17.500
0.9
0.9
0.9
0.9
0.9
18.000
0.9
0.9
0.9
0.9
0.9
18.500
0.9
0.9
0.9
0.9
0.9
19.000
0.9
0.9
0.9
0.9
0.9
19.500
0.9
0.9
0.9
0.9
1.0
20.000
1.0
1.0
1.0
1.0
1.0
20.500
1.0
1.0
1.0
1.0
1.0
21.000
1.0
1.0
1.0
1.0
1.0
21.500
1.0
1.0
1.0
1.0
1.0
22.000
1.0
1.0
1.0
1.0
1.0
22.500
1.0
1.0
1.0
1.0
1.0
23.000
1.0
1.0
1.0
1.0
1.0
23.500
1.0
1.0
1.0
1.0
1.0
24.000
1.0
(N/A)
(N/A)
(N/A)
(N/A)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 WQ.ppc Center [10.02.00.01]
2/22/2022 27 Siemon Company Drive Suite 200 W Page 3 of 12
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time of Concentration Calculations
Label: POST -AREA
Scenario: Union County - Synthetic Curve, 1 yrs
Time of Concentration Results
Segment #1: User Defined Tc
Time of Concentration 0.083 hours
Time of Concentration (Composite)
Time of Concentration 0.083 hours
(Composite)
Return Event: 1 years
Storm Event: TypeII 24hr (1.0 in)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 WQ.ppc Center [10.02.00.01]
2/22/2022 27 Siemon Company Drive Suite 200 W Page 4 of 12
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time of Concentration Calculations Return Event: 1 years
Label: POST -AREA Storm Event: TypeII 24hr (1.0 in)
Scenario: Union County - Synthetic Curve, 1 yrs
==== User Defined
Tc = Value entered by user
Where: Tc= Time of concentration, hours
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 WQ.ppc Center [10.02.00.01]
2/22/2022 27 Siemon Company Drive Suite 200 W Page 5 of 12
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Runoff CN-Area
Label: POST -AREA
Scenario: Union County - Synthetic Curve, 1 yrs
Runoff Curve Number Data
Return Event: 1 years
Storm Event: TypeII 24hr (1.0 in)
Soil/Surface Description CN Area C UC Adjusted CN
(acres) (%) (%)
Impervious Areas - Paved parking lots,
98.000
12.640
0.0
0.0
98.000
roofs, driveways, Streets and roads
COMPOSITE AREA & WEIGHTED CN --->
(N/A)
12.640
(N/A)
(N/A)
98.000
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 WQ.ppc Center [10.02.00.01]
2/22/2022 27 Siemon Company Drive Suite 200 W Page 6 of 12
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Elevation -Area Volume Curve
Label: BMP-1
Scenario: Union County - Synthetic Curve, 1 yrs
Return Event: 1 years
Storm Event: TypeII 24hr (1.0 in)
Elevation Planimeter Area Al+A2+sgr(Al*A Volume Volume (Total)
(ft) (ftz) (acres) 2) (ft3) (ft3)
(acres)
576.00
0.0
0.569
0.000
0.000
0.000
576.50
0.0
0.629
1.796
13,041.000
13,041.000
577.00
0.0
0.676
1.957
14,208.000
27,249.000
578.00
0.0
0.729
2.107
30,594.000
57,843.000
579.00
0.0
0.784
2.269
32,946.000
90,789.000
580.00
0.0
0.840
2.436
35,364.000
126,152.000
581.00
0.0
0.898
2.607
37,847.000
163,999.000
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 WQ.ppc Center [10.02.00.01]
2/22/2022 27 Siemon Company Drive Suite 200 W Page 7 of 12
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Outlet Input Data Return Event: 1 years
Label: Riser-1 Storm Event: TypeII 24hr (1.0 in)
Scenario: Union County - Synthetic Curve, 1 yrs
Requested Pond Water Surface Elevations
Minimum (Headwater) 576.00 ft
Increment (Headwater) 0.50 ft
Maximum (Headwater) 581.00 ft
Outlet Connectivity
Structure Type Outlet ID Direction Outfall E1 E2
(ft) (ft)
Inlet Box
RO
Forward
CO
579.25
581.00
Orifice -Circular
Orifice -
Forward
CO
576.00
581.00
WQ
Culvert -Circular
CO
Forward
TW
573.00
581.00
Tailwater Settings
Tailwater
(N/A)
(N/A)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 WQ.ppc Center [10.02.00.01]
2/22/2022 27 Siemon Company Drive Suite 200 W Page 8 of 12
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Outlet Input Data
Label: Riser-1
Scenario: Union County - Synthetic Curve, 1 yrs
Return Event: 1 years
Storm Event: TypeII 24hr (1.0 in)
Structure ID: RO
Structure Type: Inlet Box
Number of Openings
1
Elevation
579.25 ft
Orifice Area
16.0 ftz
Orifice Coefficient
0.600
Weir Length
16.00 ft
Weir Coefficient
3.00 (ft^0.5)/s
K Reverse
1.000
Manning's n
0.000
Kev, Charged Riser
0.000
Weir Submergence
False
Orifice H to crest
False
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 WQ.ppc Center [10.02.00.01]
2/22/2022 27 Siemon Company Drive Suite 200 W Page 9 of 12
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Outlet Input Data
Return Event: 1 years
Label: Riser-1
Storm Event: TypeII 24hr (1.0 in)
Scenario: Union County - Synthetic Curve, 1 yrs
Structure ID: CO
Structure Type: Culvert -Circular
Number of Barrels
1
Diameter
30.0 in
Length
64.06 ft
Length (Computed Barrel)
64.18 ft
Slope (Computed)
0.062 ft/ft
Outlet Control Data
Manning's n
0.013
Ke
0.200
Kb
0.009
Kr
0.000
Convergence Tolerance
0.00 ft
Inlet Control Data
Equation Form
Form 1
K
0.0045
M
2.0000
C
0.0317
Y
0.6900
T1 ratio (HW/D)
0.000
T2 ratio (HW/D)
1.166
Slope Correction Factor
-0.500
Use unsubmerged inlet control 0 equation below T1
elevation.
Use submerged inlet control 0 equation above T2
elevation
In transition zone between unsubmerged and submerged
inlet control,
interpolate between flows at T1 & T2...
T1 Elevation 573.00 ft T1 Flow 27.16 ft3/s
T2 Elevation 575.91 ft T2 Flow 31.05 ft3/s
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 WQ.ppc Center [10.02.00.01]
2/22/2022 27 Siemon Company Drive Suite 200 W Page 10 of 12
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Outlet Input Data
Label: Riser-1
Scenario: Union County - Synthetic Curve, 1 yrs
Return Event: 1 years
Storm Event: TypeII 24hr (1.0 in)
Structure ID: Orifice - WQ
Structure Type: Orifice -Circular
Number of Openings
1
Elevation
576.00 ft
Orifice Diameter
2.5 in
Orifice Coefficient
0.600
Structure ID: TW
Structure Type: TW Setup, DS Channel
Tailwater Type
Free Outfall
Convergence Tolerances
Maximum Iterations
40
Tailwater Tolerance
0.01 ft
(Minimum)
Tailwater Tolerance
0.50 ft
(Maximum)
Headwater Tolerance
0.01 ft
(Minimum)
Headwater Tolerance
0.50 ft
(Maximum)
Flow Tolerance (Minimum)
0.001 ft3/s
Flow Tolerance (Maximum)
10.000 ft3/s
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 WQ.ppc Center [10.02.00.01]
2/22/2022 27 Siemon Company Drive Suite 200 W Page 11 of 12
Watertown, CT 06795 USA +1-203-755-1666
Index
BMP-1 (Elevation -Area Volume Curve, 1 years (Union County - Synthetic Curve, 1
yrs))... 7
Master Network Summary ... 1
POST -AREA (Runoff CN-Area, 1 years (Union County - Synthetic Curve, 1 yrs))... 6
POST -AREA (Time of Concentration Calculations, 1 years (Union County - Synthetic
Curve, 1 yrs))... 4, 5
Riser-1 (Outlet Input Data, 1 years (Union County - Synthetic Curve, 1 yrs))... 8, 9,
10, 11
U
Union County (Time -Depth Curve, 1 years (Union County - Synthetic Curve, 1
yrs))... 2, 3
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 WQ.ppc Center [10.02.00.01]
2/22/2022 27 Siemon Company Drive Suite 200 W Page 12 of 12
Watertown, CT 06795 USA +1-203-755-1666
BMP 2 WQ
30,000.000
27,500.000
25,000.000
22,500.000
20,000.000
17,500.000
15,000.000
0 12,500.000
10,000.000
7,500.000
5,000.000
2,500.000
0.000
0.000 20.000 40.000 60.000 80.000 100.000 120.00,
Time (hours)
BMP-1 - Union County - Synthetic Curve, 1 yrs - Volume I
Table of Contents
Master Network Summary
Union County
Time -Depth Curve, 2 years (Union County - Synthetic Curve, 2 3
yrs)
Time -Depth Curve, 10 years (Union County - Synthetic Curve, 5
10 yrs)
Time -Depth Curve, 25 years (Union County - Synthetic Curve, 7
25 yrs)
Time -Depth Curve, 50 years (Union County - Synthetic Curve, 9
50 yrs)
Time -Depth Curve, 100 years (Union County - Synthetic Curve, 11
100 yrs)
POST -AREA Time of Concentration Calculations, 2 years (Union County - 13
Synthetic Curve, 2 yrs)
POST -AREA YRunoffCN-Area, 2 years (Union County - Synthetic Curve, 2 15
Elevation -Area Volume Curve, 2 years (Union County
BMP 2 Synthetic Curve, 2 yrs) 16
Riser-1 Outlet Input Data, 2 years (Union County - Synthetic Curve, 2 17
yrs)
Subsection: Master Network Summary
Catchments Summary
Label Scenario Return Hydrograph Time to Peak Peak Flow
Event Volume (hours) (ft3/s)
(years) (ft3)
POST -AREA
Union County -
2
57,233.000
11.930
24.11
Synthetic Curve, 2
yrs
POST -AREA
Union County -
10
111,878.000
11.930
48.36
Synthetic Curve, 10
yrs
POST -AREA
Union County -
25
149,362.000
11.920
64.58
Synthetic Curve, 25
yrs
POST -AREA
Union County -
50
180,563.000
11.920
78.02
Synthetic Curve, 50
yrs
POST -AREA
Union County -
100
216,634.000
11.920
93.38
Synthetic Curve, 100
yrs
Node Summary
Label Scenario Return Hydrograph Time to Peak Peak Flow
Event Volume (hours) (ft3/s)
(years) (ft3)
OUTFALL
Union County -
2
28,619.000
15.440
0.79
Synthetic Curve, 2
yrs
OUTFALL
Union County -
10
82,923.000
12.810
3.52
Synthetic Curve, 10
yrs
OUTFALL
Union County -
25
120,257.000
12.090
19.81
Synthetic Curve, 25
yrs
OUTFALL
Union County -
50
151,357.000
12.060
41.68
Synthetic Curve, 50
yrs
OUTFALL
Union County -
100
187,329.000
12.040
63.96
Synthetic Curve, 100
yrs
Pond Summary
Label Scenario
BMP-2 (IN) I Union County -
Synthetic
Curve, 2 yrs
Return Hydrograph Time to Peak Peak Flow
Event Volume (hours) (ft3/s)
(years) (ft3)
2 i 57,233.000 i 11.930 i 24.11
Maximum Maximum
Water Pond Storage
Surface (ft3)
Elevation
(ft)
(N/A) (N/A)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 1 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Master Network Summary
Pond Summary
Label
Scenario
Return
Hydrograph
Time to Peak
Peak Flow
Maximum
Maximum
Event
Volume
(hours)
(ft3/s)
Water
Pond Storage
(years)
(ft3)
Surface
(ft3)
Elevation
(ft)
BMP-2
Union County -
2
28,619.000
15.440
0.79
577.33
37,188.000
(OUT)
Synthetic
Curve, 2 yrs
BMP-2 (IN)
Union County -
10
111,878.000
11.930
48.36
(N/A)
(N/A)
Synthetic
Curve, 10 yrs
BMP-2
Union County -
10
82,923.000
12.810
3.52
578.00
57,950.000
(OUT)
Synthetic
Curve, 10 yrs
BMP-2 (IN)
Union County -
25
149,362.000
11.920
64.58
(N/A)
(N/A)
Synthetic
Curve, 25 yrs
BMP-2
Union County -
25
120,257.000
12.090
19.81
578.30
67,525.000
(OUT)
Synthetic
Curve, 25 yrs
BMP-2 (IN)
Union County -
50
180,563.000
11.920
78.02
(N/A)
(N/A)
Synthetic
Curve, 50 yrs
BMP-2
Union County -
50
151,357.000
12.060
41.68
578.53
75,046.000
(OUT)
Synthetic
Curve, 50 yrs
BMP-2 (IN)
Union County -
100
216,634.000
11.920
93.38
(N/A)
(N/A)
Synthetic
Curve, 100 yrs
BMP-2
Union County -
100
187,329.000
12.040
63.96
578.72
81,191.000
(OUT)
Synthetic
Curve, 100 yrs
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 2 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve
Label: Union County
Scenario: Union County - Synthetic Curve, 2 yrs
Time -Depth Curve: TypeII 24hr (3.6 in)
Label TypeII 24hr (3.6
in)
Start Time 0.000 hours
Increment 0.100 hours
End Time 24.000 hours
Return Event 2 years
Return Event: 2 years
Storm Event: TypeII 24hr (3.6 in)
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
0.000
0.0
0.0
0.0
0.0
0.0
0.500
0.0
0.0
0.0
0.0
0.0
1.000
0.0
0.0
0.0
0.0
0.1
1.500
0.1
0.1
0.1
0.1
0.1
2.000
0.1
0.1
0.1
0.1
0.1
2.500
0.1
0.1
0.1
0.1
0.1
3.000
0.1
0.1
0.1
0.1
0.1
3.500
0.1
0.2
0.2
0.2
0.2
4.000
0.2
0.2
0.2
0.2
0.2
4.500
0.2
0.2
0.2
0.2
0.2
5.000
0.2
0.2
0.2
0.2
0.3
5.500
0.3
0.3
0.3
0.3
0.3
6.000
0.3
0.3
0.3
0.3
0.3
6.500
0.3
0.3
0.3
0.3
0.3
7.000
0.4
0.4
0.4
0.4
0.4
7.500
0.4
0.4
0.4
0.4
0.4
8.000
0.4
0.4
0.4
0.5
0.5
8.500
0.5
0.5
0.5
0.5
0.5
9.000
0.5
0.5
0.6
0.6
0.6
9.500
0.6
0.6
0.6
0.6
0.6
10.000
0.7
0.7
0.7
0.7
0.7
10.500
0.7
0.8
0.8
0.8
0.8
11.000
0.8
0.9
0.9
0.9
1.0
11.500
1.0
1.1
1.3
1.6
2.0
12.000
2.4
2.5
2.5
2.6
2.6
12.500
2.6
2.7
2.7
2.7
2.8
13.000
2.8
2.8
2.8
2.8
2.9
13.500
2.9
2.9
2.9
2.9
2.9
14.000
3.0
3.0
3.0
3.0
3.0
14.500
3.0
3.0
3.0
3.1
3.1
15.000
3.1
3.1
3.1
3.1
3.1
15.500
3.1
3.1
3.1
3.2
3.2
16.000
3.2
3.2
3.2
3.2
3.2
16.500
3.2
3.2
3.2
3.2
3.2
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 3 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve Return Event: 2 years
Label: Union County Storm Event: TypeII 24hr (3.6 in)
Scenario: Union County - Synthetic Curve, 2 yrs
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
17.000
3.2
3.3
3.3
3.3
3.3
17.500
3.3
3.3
3.3
3.3
3.3
18.000
3.3
3.3
3.3
3.3
3.3
18.500
3.3
3.4
3.4
3.4
3.4
19.000
3.4
3.4
3.4
3.4
3.4
19.500
3.4
3.4
3.4
3.4
3.4
20.000
3.4
3.4
3.4
3.4
3.4
20.500
3.5
3.5
3.5
3.5
3.5
21.000
3.5
3.5
3.5
3.5
3.5
21.500
3.5
3.5
3.5
3.5
3.5
22.000
3.5
3.5
3.5
3.5
3.5
22.500
3.5
3.5
3.5
3.6
3.6
23.000
3.6
3.6
3.6
3.6
3.6
23.500
3.6
3.6
3.6
3.6
3.6
24.000
3.6
(N/A)
(N/A)
(N/A)
(N/A)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 4 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve
Label: Union County
Scenario: Union County - Synthetic Curve, 10 yrs
Time -Depth Curve: TypeII 24hr (5.2 in)
Label TypeII 24hr (5.2
in)
Start Time 0.000 hours
Increment 0.100 hours
End Time 24.000 hours
Return Event 10 years
Return Event: 10 years
Storm Event: TypeII 24hr (5.2 in)
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
0.000
0.0
0.0
0.0
0.0
0.0
0.500
0.0
0.0
0.0
0.0
0.0
1.000
0.1
0.1
0.1
0.1
0.1
1.500
0.1
0.1
0.1
0.1
0.1
2.000
0.1
0.1
0.1
0.1
0.1
2.500
0.1
0.2
0.2
0.2
0.2
3.000
0.2
0.2
0.2
0.2
0.2
3.500
0.2
0.2
0.2
0.2
0.2
4.000
0.2
0.3
0.3
0.3
0.3
4.500
0.3
0.3
0.3
0.3
0.3
5.000
0.3
0.3
0.3
0.4
0.4
5.500
0.4
0.4
0.4
0.4
0.4
6.000
0.4
0.4
0.4
0.4
0.5
6.500
0.5
0.5
0.5
0.5
0.5
7.000
0.5
0.5
0.5
0.5
0.6
7.500
0.6
0.6
0.6
0.6
0.6
8.000
0.6
0.6
0.6
0.7
0.7
8.500
0.7
0.7
0.7
0.7
0.7
9.000
0.8
0.8
0.8
0.8
0.8
9.500
0.8
0.9
0.9
0.9
0.9
10.000
0.9
1.0
1.0
1.0
1.0
10.500
1.1
1.1
1.1
1.2
1.2
11.000
1.2
1.3
1.3
1.4
1.4
11.500
1.5
1.6
1.8
2.2
3.0
12.000
3.4
3.5
3.6
3.7
3.8
12.500
3.8
3.9
3.9
3.9
4.0
13.000
4.0
4.0
4.1
4.1
4.1
13.500
4.2
4.2
4.2
4.2
4.2
14.000
4.3
4.3
4.3
4.3
4.3
14.500
4.4
4.4
4.4
4.4
4.4
15.000
4.4
4.5
4.5
4.5
4.5
15.500
4.5
4.5
4.5
4.6
4.6
16.000
4.6
4.6
4.6
4.6
4.6
16.500
4.6
4.6
4.7
4.7
4.7
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 5 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve Return Event: 10 years
Label: Union County Storm Event: TypeII 24hr (5.2 in)
Scenario: Union County - Synthetic Curve, 10 yrs
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
17.000
4.7
4.7
4.7
4.7
4.7
17.500
4.7
4.8
4.8
4.8
4.8
18.000
4.8
4.8
4.8
4.8
4.8
18.500
4.8
4.8
4.9
4.9
4.9
19.000
4.9
4.9
4.9
4.9
4.9
19.500
4.9
4.9
4.9
4.9
4.9
20.000
5.0
5.0
5.0
5.0
5.0
20.500
5.0
5.0
5.0
5.0
5.0
21.000
5.0
5.0
5.0
5.0
5.0
21.500
5.0
5.1
5.1
5.1
5.1
22.000
5.1
5.1
5.1
5.1
5.1
22.500
5.1
5.1
5.1
5.1
5.1
23.000
5.1
5.1
5.2
5.2
5.2
23.500
5.2
5.2
5.2
5.2
5.2
24.000
5.2
(N/A)
(N/A)
(N/A)
(N/A)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 6 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve
Label: Union County
Scenario: Union County - Synthetic Curve, 25 yrs
Time -Depth Curve: TypeII 24hr (6.2 in)
Label TypeII 24hr (6.2
in)
Start Time 0.000 hours
Increment 0.100 hours
End Time 24.000 hours
Return Event 25 years
Return Event: 25 years
Storm Event: TypeII 24hr (6.2 in)
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
0.000
0.0
0.0
0.0
0.0
0.0
0.500
0.0
0.0
0.0
0.1
0.1
1.000
0.1
0.1
0.1
0.1
0.1
1.500
0.1
0.1
0.1
0.1
0.1
2.000
0.1
0.1
0.2
0.2
0.2
2.500
0.2
0.2
0.2
0.2
0.2
3.000
0.2
0.2
0.2
0.2
0.2
3.500
0.3
0.3
0.3
0.3
0.3
4.000
0.3
0.3
0.3
0.3
0.3
4.500
0.3
0.4
0.4
0.4
0.4
5.000
0.4
0.4
0.4
0.4
0.4
5.500
0.4
0.5
0.5
0.5
0.5
6.000
0.5
0.5
0.5
0.5
0.5
6.500
0.6
0.6
0.6
0.6
0.6
7.000
0.6
0.6
0.6
0.7
0.7
7.500
0.7
0.7
0.7
0.7
0.7
8.000
0.7
0.8
0.8
0.8
0.8
8.500
0.8
0.8
0.9
0.9
0.9
9.000
0.9
0.9
1.0
1.0
1.0
9.500
1.0
1.0
1.1
1.1
1.1
10.000
1.1
1.1
1.2
1.2
1.2
10.500
1.3
1.3
1.3
1.4
1.4
11.000
1.5
1.5
1.6
1.6
1.7
11.500
1.8
1.9
2.2
2.7
3.5
12.000
4.1
4.2
4.3
4.4
4.5
12.500
4.6
4.6
4.7
4.7
4.7
13.000
4.8
4.8
4.9
4.9
4.9
13.500
5.0
5.0
5.0
5.0
5.1
14.000
5.1
5.1
5.1
5.2
5.2
14.500
5.2
5.2
5.2
5.3
5.3
15.000
5.3
5.3
5.3
5.3
5.4
15.500
5.4
5.4
5.4
5.4
5.4
16.000
5.5
5.5
5.5
5.5
5.5
16.500
5.5
5.5
5.6
5.6
5.6
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 7 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve Return Event: 25 years
Label: Union County Storm Event: TypeII 24hr (6.2 in)
Scenario: Union County - Synthetic Curve, 25 yrs
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
17.000
5.6
5.6
5.6
5.6
5.6
17.500
5.7
5.7
5.7
5.7
5.7
18.000
5.7
5.7
5.7
5.7
5.8
18.500
5.8
5.8
5.8
5.8
5.8
19.000
5.8
5.8
5.8
5.8
5.9
19.500
5.9
5.9
5.9
5.9
5.9
20.000
5.9
5.9
5.9
5.9
5.9
20.500
5.9
6.0
6.0
6.0
6.0
21.000
6.0
6.0
6.0
6.0
6.0
21.500
6.0
6.0
6.0
6.0
6.0
22.000
6.1
6.1
6.1
6.1
6.1
22.500
6.1
6.1
6.1
6.1
6.1
23.000
6.1
6.1
6.1
6.2
6.2
23.500
6.2
6.2
6.2
6.2
6.2
24.000
6.2
(N/A)
(N/A)
(N/A)
(N/A)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 8 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve
Label: Union County
Scenario: Union County - Synthetic Curve, 50 yrs
Time -Depth Curve: TypeII 24hr (7.0 in)
Label TypeII 24hr (7.0
in)
Start Time 0.000 hours
Increment 0.100 hours
End Time 24.000 hours
Return Event 50 years
Return Event: 50 years
Storm Event: TypeII 24hr (7.0 in)
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
0.000
0.0
0.0
0.0
0.0
0.0
0.500
0.0
0.0
0.1
0.1
0.1
1.000
0.1
0.1
0.1
0.1
0.1
1.500
0.1
0.1
0.1
0.1
0.1
2.000
0.2
0.2
0.2
0.2
0.2
2.500
0.2
0.2
0.2
0.2
0.2
3.000
0.2
0.3
0.3
0.3
0.3
3.500
0.3
0.3
0.3
0.3
0.3
4.000
0.3
0.3
0.4
0.4
0.4
4.500
0.4
0.4
0.4
0.4
0.4
5.000
0.4
0.5
0.5
0.5
0.5
5.500
0.5
0.5
0.5
0.5
0.5
6.000
0.6
0.6
0.6
0.6
0.6
6.500
0.6
0.6
0.7
0.7
0.7
7.000
0.7
0.7
0.7
0.7
0.8
7.500
0.8
0.8
0.8
0.8
0.8
8.000
0.8
0.9
0.9
0.9
0.9
8.500
0.9
0.9
1.0
1.0
1.0
9.000
1.0
1.1
1.1
1.1
1.1
9.500
1.1
1.2
1.2
1.2
1.2
10.000
1.3
1.3
1.3
1.4
1.4
10.500
1.4
1.5
1.5
1.5
1.6
11.000
1.6
1.7
1.8
1.8
1.9
11.500
2.0
2.1
2.5
3.0
4.0
12.000
4.6
4.8
4.9
5.0
5.1
12.500
5.1
5.2
5.3
5.3
5.4
13.000
5.4
5.4
5.5
5.5
5.6
13.500
5.6
5.6
5.7
5.7
5.7
14.000
5.7
5.8
5.8
5.8
5.8
14.500
5.9
5.9
5.9
5.9
6.0
15.000
6.0
6.0
6.0
6.0
6.1
15.500
6.1
6.1
6.1
6.1
6.1
16.000
6.2
6.2
6.2
6.2
6.2
16.500
6.2
6.3
6.3
6.3
6.3
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 9 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve Return Event: 50 years
Label: Union County Storm Event: TypeII 24hr (7.0 in)
Scenario: Union County - Synthetic Curve, 50 yrs
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
17.000
6.3
6.3
6.3
6.4
6.4
17.500
6.4
6.4
6.4
6.4
6.4
18.000
6.4
6.5
6.5
6.5
6.5
18.500
6.5
6.5
6.5
6.5
6.6
19.000
6.6
6.6
6.6
6.6
6.6
19.500
6.6
6.6
6.6
6.6
6.7
20.000
6.7
6.7
6.7
6.7
6.7
20.500
6.7
6.7
6.7
6.7
6.7
21.000
6.8
6.8
6.8
6.8
6.8
21.500
6.8
6.8
6.8
6.8
6.8
22.000
6.8
6.8
6.9
6.9
6.9
22.500
6.9
6.9
6.9
6.9
6.9
23.000
6.9
6.9
6.9
6.9
7.0
23.500
7.0
7.0
7.0
7.0
7.0
24.000
7.0
(N/A)
(N/A)
(N/A)
(N/A)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 10 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve
Label: Union County
Scenario: Union County - Synthetic Curve, 100 yrs
Time -Depth Curve: TypeII 24hr (7.9 in)
Label TypeII 24hr (7.9
in)
Start Time 0.000 hours
Increment 0.100 hours
End Time 24.000 hours
Return Event 100 years
Return Event: 100 years
Storm Event: TypeII 24hr (7.9 in)
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
0.000
0.0
0.0
0.0
0.0
0.0
0.500
0.0
0.0
0.1
0.1
0.1
1.000
0.1
0.1
0.1
0.1
0.1
1.500
0.1
0.1
0.1
0.2
0.2
2.000
0.2
0.2
0.2
0.2
0.2
2.500
0.2
0.2
0.2
0.3
0.3
3.000
0.3
0.3
0.3
0.3
0.3
3.500
0.3
0.3
0.3
0.4
0.4
4.000
0.4
0.4
0.4
0.4
0.4
4.500
0.4
0.4
0.5
0.5
0.5
5.000
0.5
0.5
0.5
0.5
0.5
5.500
0.6
0.6
0.6
0.6
0.6
6.000
0.6
0.6
0.7
0.7
0.7
6.500
0.7
0.7
0.7
0.8
0.8
7.000
0.8
0.8
0.8
0.8
0.8
7.500
0.9
0.9
0.9
0.9
0.9
8.000
0.9
1.0
1.0
1.0
1.0
8.500
1.0
1.1
1.1
1.1
1.1
9.000
1.2
1.2
1.2
1.2
1.3
9.500
1.3
1.3
1.3
1.4
1.4
10.000
1.4
1.5
1.5
1.5
1.6
10.500
1.6
1.7
1.7
1.7
1.8
11.000
1.9
1.9
2.0
2.1
2.1
11.500
2.2
2.4
2.8
3.4
4.5
12.000
5.2
5.4
5.5
5.6
5.7
12.500
5.8
5.9
5.9
6.0
6.0
13.000
6.1
6.1
6.2
6.2
6.3
13.500
6.3
6.3
6.4
6.4
6.4
14.000
6.5
6.5
6.5
6.6
6.6
14.500
6.6
6.6
6.7
6.7
6.7
15.000
6.7
6.8
6.8
6.8
6.8
15.500
6.9
6.9
6.9
6.9
6.9
16.000
7.0
7.0
7.0
7.0
7.0
16.500
7.0
7.1
7.1
7.1
7.1
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 11 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time -Depth Curve Return Event: 100 years
Label: Union County Storm Event: TypeII 24hr (7.9 in)
Scenario: Union County - Synthetic Curve, 100 yrs
CUMULATIVE RAINFALL (in)
Output Time Increment = 0.100 hours
Time on left represents time for first value in each row.
Time Depth Depth Depth Depth Depth
(hours) (in) (in) (in) (in) (in)
17.000
7.1
7.1
7.2
7.2
7.2
17.500
7.2
7.2
7.2
7.2
7.3
18.000
7.3
7.3
7.3
7.3
7.3
18.500
7.3
7.4
7.4
7.4
7.4
19.000
7.4
7.4
7.4
7.4
7.5
19.500
7.5
7.5
7.5
7.5
7.5
20.000
7.5
7.5
7.5
7.6
7.6
20.500
7.6
7.6
7.6
7.6
7.6
21.000
7.6
7.6
7.6
7.7
7.7
21.500
7.7
7.7
7.7
7.7
7.7
22.000
7.7
7.7
7.7
7.7
7.8
22.500
7.8
7.8
7.8
7.8
7.8
23.000
7.8
7.8
7.8
7.8
7.8
23.500
7.9
7.9
7.9
7.9
7.9
24.000
7.9
(N/A)
(N/A)
(N/A)
(N/A)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 12 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time of Concentration Calculations
Label: POST -AREA
Scenario: Union County - Synthetic Curve, 2 yrs
Time of Concentration Results
Segment #1: User Defined Tc
Time of Concentration 0.083 hours
Time of Concentration (Composite)
Time of Concentration 0.083 hours
(Composite)
Return Event: 2 years
Storm Event: TypeII 24hr (3.6 in)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 13 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Time of Concentration Calculations Return Event: 2 years
Label: POST -AREA Storm Event: TypeII 24hr (3.6 in)
Scenario: Union County - Synthetic Curve, 2 yrs
==== User Defined
Tc = Value entered by user
Where: Tc= Time of concentration, hours
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 14 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Runoff CN-Area
Label: POST -AREA
Scenario: Union County - Synthetic Curve, 2 yrs
Runoff Curve Number Data
Return Event: 2 years
Storm Event: TypeII 24hr (3.6 in)
Soil/Surface Description CN Area C UC Adjusted CN
(acres) (%) (%)
Impervious Areas - Paved parking lots,
98.000
4.100
0.0
0.0
98.000
roofs, driveways, Streets and roads
Open space (Lawns,parks etc.) - Good
61.000
8.540
0.0
0.0
61.000
condition; grass cover > 75% - Soil B
COMPOSITE AREA & WEIGHTED CN --->
(N/A)
12.640
(N/A)
(N/A)
73.002
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 15 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Elevation -Area Volume Curve
Label: BMP-2
Scenario: Union County - Synthetic Curve, 2 yrs
Return Event: 2 years
Storm Event: TypeII 24hr (3.6 in)
Elevation Planimeter Area Al+A2+sgr(Al*A Volume Volume (Total)
(ft) (ftz) (acres) 2) (ft3) (ft3)
(acres)
576.00
0.0
0.569
0.000
0.000
0.000
576.50
0.0
0.629
1.796
13,041.000
13,041.000
577.00
0.0
0.676
1.957
14,208.000
27,249.000
578.00
0.0
0.729
2.107
30,594.000
57,843.000
579.00
0.0
0.784
2.269
32,946.000
90,789.000
580.00
0.0
0.840
2.436
35,364.000
126,152.000
581.00
0.0
0.898
2.607
37,847.000
163,999.000
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 16 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Outlet Input Data Return Event: 2 years
Label: Riser-1 Storm Event: TypeII 24hr (3.6 in)
Scenario: Union County - Synthetic Curve, 2 yrs
Requested Pond Water Surface Elevations
Minimum (Headwater) 576.00 ft
Increment (Headwater) 0.50 ft
Maximum (Headwater) 581.00 ft
Outlet Connectivity
Structure Type Outlet ID Direction Outfall E1 E2
(ft) (ft)
Orifice -Area
Orifice -
Forward
CO
577.25
581.00
2yr
Inlet Box
RO
Forward
CO
579.50
581.00
Orifice -Circular
Orifice -
Forward
CO
576.00
581.00
WQ
Culvert -Circular
CO
Forward
TW
573.00
581.00
Rectangular Weir
Weir - 1
Forward
TW
578.00
581.00
Orifice -Area
Orifice -
Forward
TW
578.25
581.00
25yr
Tailwater Settings
1 Tailwater
I
I
I (N/A)
I (N/A)
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 17 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Outlet Input Data
Label: Riser-1
Scenario: Union County - Synthetic Curve, 2 yrs
Return Event: 2 years
Storm Event: TypeII 24hr (3.6 in)
Structure ID: RO
Structure Type: Inlet Box
Number of Openings
1
Elevation
579.50 ft
Orifice Area
16.0 ftz
Orifice Coefficient
0.600
Weir Length
16.00 ft
Weir Coefficient
3.00 (ft^0.5)/s
K Reverse
1.000
Manning's n
0.000
Kev, Charged Riser
0.000
Weir Submergence
False
Orifice H to crest
False
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 18 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Outlet Input Data
Return Event: 2 years
Label: Riser-1
Storm Event: TypeII 24hr (3.6 in)
Scenario: Union County - Synthetic Curve, 2 yrs
Structure ID: CO
Structure Type: Culvert -Circular
Number of Barrels
1
Diameter
30.0 in
Length
64.06 ft
Length (Computed Barrel)
64.18 ft
Slope (Computed)
0.062 ft/ft
Outlet Control Data
Manning's n
0.013
Ke
0.200
Kb
0.009
Kr
0.000
Convergence Tolerance
0.00 ft
Inlet Control Data
Equation Form
Form 1
K
0.0045
M
2.0000
C
0.0317
Y
0.6900
T1 ratio (HW/D)
1.064
T2 ratio (HW/D)
1.166
Slope Correction Factor
-0.500
Use unsubmerged inlet control 0 equation below T1
elevation.
Use submerged inlet control 0 equation above T2
elevation
In transition zone between unsubmerged and submerged
inlet control,
interpolate between flows at T1 & T2...
T1 Elevation 575.66 ft T1 Flow 27.16 ft3/s
T2 Elevation 575.91 ft T2 Flow 31.05 ft3/s
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 19 of 22
Watertown, CT 06795 USA +1-203-755-1666
Subsection: Outlet Input Data
Label: Riser-1
Scenario: Union County - Synthetic Curve, 2 yrs
BMP-2 POST.ppc
2/28/2022
Return Event: 2 years
Storm Event: TypeII 24hr (3.6 in)
Structure ID: Orifice - WQ
Structure Type: Orifice -Circular
Number of Openings
1
Elevation
576.00 ft
Orifice Diameter
2.5 in
Orifice Coefficient
0.600
Structure ID: Orifice - 2yr
Structure Type: Orifice -Area
Number of Openings
1
Elevation
577.25 ft
Orifice Area
0.8 ftz
Top Elevation
577.50 ft
Datum Elevation
577.25 ft
Orifice Coefficient
0.600
Structure ID: Orifice - 25yr
Structure Type: Orifice -Area
Number of Openings
1
Elevation
578.25 ft
Orifice Area
0.8 ftz
Top Elevation
578.50 ft
Datum Elevation
578.25 ft
Orifice Coefficient
0.600
Structure ID: Weir- 1
Structure Type: Rectangular Weir
Number of Openings
1
Elevation
578.00 ft
Weir Length
30.00 ft
Weir Coefficient
3.00 (ft^0.5)/s
Structure ID: TW
Structure Type: TW Setup, DS Channel
Tailwater Type
Free Outfall
Convergence Tolerances
Maximum Iterations
40
Tailwater Tolerance
0.01 ft
(Minimum)
Tailwater Tolerance
0.50 ft
(Maximum)
Headwater Tolerance
0.01 ft
(Minimum)
Bentley Systems, Inc. Haestad
Methods Solution
Center
27 Siemon Company Drive Suite 200 W
Watertown, CT 06795 USA +1-203-755-1666
Pond Pack CONNECT Edition
[10.02.00.01]
Page 20 of 22
Subsection: Outlet Input Data Return Event: 2 years
Label: Riser-1 Storm Event: TypeII 24hr (3.6 in)
Scenario: Union County - Synthetic Curve, 2 yrs
Convergence Tolerances
Headwater Tolerance 0.50 ft
(Maximum)
Flow Tolerance (Minimum) 0.001 ft3/s
Flow Tolerance (Maximum) 10.000 ft3/s
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 21 of 22
Watertown, CT 06795 USA +1-203-755-1666
Index
BMP-2 (Elevation -Area Volume Curve, 2 years (Union County - Synthetic Curve, 2
yrs))... 16
Master Network Summary ... 1, 2
POST -AREA (Runoff CN-Area, 2 years (Union County - Synthetic Curve, 2 yrs))... 15
POST -AREA (Time of Concentration Calculations, 2 years (Union County - Synthetic
Curve, 2 yrs))... 13, 14
Riser-1 (Outlet Input Data, 2 years (Union County - Synthetic Curve, 2 yrs))...17,
18, 19, 20, 21
U
Union County (Time -Depth Curve, 10 years (Union County -
Synthetic Curve, 10
yrs))... 5, 6
Union County (Time -Depth Curve, 100 years (Union County
- Synthetic Curve, 100
yrs))... 11, 12
Union County (Time -Depth Curve, 2 years (Union County - Synthetic Curve, 2
yrs))... 3, 4
Union County (Time -Depth Curve, 25 years (Union County -
Synthetic Curve, 25
yrs))... 7, 8
Union County (Time -Depth Curve, 50 years (Union County -
Synthetic Curve, 50
yrs))... 9, 10
Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition
BMP-2 POST.ppc Center [10.02.00.01]
2/28/2022 27 Siemon Company Drive Suite 200 W Page 22 of 22
Watertown, CT 06795 USA +1-203-755-1666
Buoyancy Calculations:
Bouyancy Calculations - BMP-1
Volume of Water Displaced (Structure)
Structure Dimensions:
Inner Length = 4
Feet
Inner Width = 4
Feet
Thickness = 0.58
Feet
Height = 8.15
Feet
Volume = 217
Cubic Feet
Specific Weight of Water =
62.4
Pounds per Cubic Foot
Weight of Displaced Volume =
13,541
Pounds
Volume of Water Displaced (Base):
Structure Dimensions:
Flange = 1.92
Feet
Length = 9
Feet
Width = 9
Feet
Height = 2.5
Feet
Volume = 203
Cubic Feet
Specific Weight of Water =
62.4
Pounds per Cubic Foot
Weight of Displaced Volume =
12,636
Pounds
Total Weight of Displaced Volume =
26,177
Pounds
Concrete Volume of Structure
Concrete Volume:
Inner Length = 4
Feet
Inner Width = 4
Feet
Thickness = 0.58
Feet
Height = 8.15
Feet
Volume = 87
Cubic Feet
Specific Weight of Concrete =
150
Pounds per Cubic Foot
Weight of Concrete =
12,990
Pounds
Volume of Concrete Required (Base):
Concrete Volume:
Flange = 1.92
Feet
Length = 9
Feet
Width = 9
Feet
Height = 2.5
Feet
Volume = 203
Cubic Feet
Specific Weight of Concrete =
150
Pounds per Cubic Foot
Weight of Concrete =
30,375
Pounds
Total Weight of Concrete =
43,365
Pounds
Factor of Safety (Minimum = 1) =
1.66
Bouyancy Calculations - BMP-2
Volume of Water Displaced (Structure)
Structure Dimensions:
Inner Length = 4
Feet
Inner Width = 4
Feet
Thickness = 0.58
Feet
Height = 7.1
Feet
Volume = 189
Cubic Feet
Specific Weight of Water =
62.4
Pounds per Cubic Foot
Weight of Displaced Volume =
11,796
Pounds
Volume of Water Displaced (Base):
Structure Dimensions:
Flange = 1.92
Feet
Length = 9
Feet
Width = 9
Feet
Height = 2.5
Feet
Volume = 203
Cubic Feet
Specific Weight of Water =
62.4
Pounds per Cubic Foot
Weight of Displaced Volume =
12,636
Pounds
Total Weight of Displaced Volume =
24,432
Pounds
Concrete Volume of Structure
Concrete Volume:
Inner Length = 4
Feet
Inner Width = 4
Feet
Thickness = 0.58
Feet
Height = 7.1
Feet
Volume = 75
Cubic Feet
Specific Weight of Concrete =
150
Pounds per Cubic Foot
Weight of Concrete =
11,316
Pounds
Volume of Concrete Required (Base):
Concrete Volume:
Flange = 1.92
Feet
Length = 9
Feet
Width = 9
Feet
Height = 2.5
Feet
Volume = 203
Cubic Feet
Specific Weight of Concrete =
150
Pounds per Cubic Foot
Weight of Concrete =
30,375
Pounds
Total Weight of Concrete =
41,691
Pounds
Factor of Safety (Minimum = 1) =
1.71
Rip Rap Calculations:
PIPE OUTLET TO FLAT AREA WITH NO DEFINED CHANNEL:
3 Do
Q = 12.60 CFS
DISCHARGE, FT3 / SEC
v
m
N
Z
30
Z
�
O
c
C
3
r
m
aI
�o
a0
4
m
�
p
O
Z C�
Z
3 w
O 3
O
3
N
Z
a
A
O
2
c
a
Z
�
N
v
o
v
�
a�
1
3
m
m
D50 = 0.5'
m
O
O
500 1000
c
r
r
PIPE OUTLET TO FLAT AREA WITH NO DEFINED CHANNEL:
3 Do
Q=10.74CFS
DISCHARGE, FT3 / SEC
v
m
N
Z
O
Z
�
�
O
c
C
3
r
�
m
a�
�o
aIS
4
p
O
Z C�
Z
F-
3
w
O 3
-Cl
LL
O
3
Ld
Z
N
.N
a
A
O
2
c
a
�
Z
�
N
v
o
v
�
a�
1
m
D50 = 0.5'
m
O
G)
1000
c
r
r
Storm Drainage Calculations:
CI-102 GUTTER
Project Description
Solve For Spread
Input Data
Discharge
2.10 cfs
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
6.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
6.0 ft
Opening Height
0.5 ft
Curb Throat Type
Horizontal
Throat Incline Angle
90.00 degrees
Options
Calculation Option
Use Both
Results
Spread
7.4 ft
Depth
1.8 in
Gutter Depression
0.0 in
Total Depression
2.0 in
Open Grate Area
5.4 ftz
Active Grate Weir Length
8.0 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1
Watertown, CT 06795 USA + 1 -203-755-1666
CI-103 GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.74 cfs
Slope
0.010 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
82.41 %
Intercepted Flow
0.61 cfs
Bypass Flow
0.13 cfs
Spread
6.0 ft
Depth
1.4 in
Flow Area
0.4 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
2.09 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.083
Grate Flow Ratio
0.665
Equivalent Cross Slope
0.075 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.177
Total Interception Length
8.5 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-103A GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.84 cfs
Slope
0.010 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
80.14 %
Intercepted Flow
0.67 cfs
Bypass Flow
0.17 cfs
Spread
6.2 ft
Depth
1.5 in
Flow Area
0.4 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
2.15 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.079
Grate Flow Ratio
0.643
Equivalent Cross Slope
0.074 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.165
Total Interception Length
9.1 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-104 GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
1.26 cfs
Slope
0.010 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
6.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
6.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
86.87 %
Intercepted Flow
1.09 cfs
Bypass Flow
0.17 cfs
Spread
7.3 ft
Depth
1.7 in
Flow Area
0.5 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
2.38 ft/s
Splash Over Velocity
9.97 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.259
Grate Flow Ratio
0.576
Equivalent Cross Slope
0.068 ft/ft
Active Grate Length
3.0 ft
Length Factor
0.266
Total Interception Length
11.3 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-104A GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
1.27 cfs
Slope
0.010 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
6.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
6.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
86.74 %
Intercepted Flow
1.10 cfs
Bypass Flow
0.17 cfs
Spread
7.3 ft
Depth
1.8 in
Flow Area
0.5 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
2.39 ft/s
Splash Over Velocity
9.97 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.258
Grate Flow Ratio
0.575
Equivalent Cross Slope
0.068 ft/ft
Active Grate Length
3.0 ft
Length Factor
0.265
Total Interception Length
11.3 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-105 GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.87 cfs
Slope
0.010 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
79.50 %
Intercepted Flow
0.69 cfs
Bypass Flow
0.18 cfs
Spread
6.3 ft
Depth
1.5 in
Flow Area
0.4 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
2.17 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.077
Grate Flow Ratio
0.637
Equivalent Cross Slope
0.073 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.162
Total Interception Length
9.3 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-105A GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.88 cfs
Slope
0.010 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
79.29 %
Intercepted Flow
0.70 cfs
Bypass Flow
0.18 cfs
Spread
6.4 ft
Depth
1.5 in
Flow Area
0.4 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
2.18 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.077
Grate Flow Ratio
0.635
Equivalent Cross Slope
0.073 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.161
Total Interception Length
9.3 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-106 GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.89 cfs
Slope
0.010 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
79.08 %
Intercepted Flow
0.70 cfs
Bypass Flow
0.19 cfs
Spread
6.4 ft
Depth
1.5 in
Flow Area
0.4 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
2.18 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.077
Grate Flow Ratio
0.633
Equivalent Cross Slope
0.073 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.160
Total Interception Length
9.4 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-106A GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.93 cfs
Slope
0.010 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
78.28 %
Intercepted Flow
0.73 cfs
Bypass Flow
0.20 cfs
Spread
6.5 ft
Depth
1.6 in
Flow Area
0.4 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
2.21 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.075
Grate Flow Ratio
0.626
Equivalent Cross Slope
0.072 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.156
Total Interception Length
9.6 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-107 GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.95 cfs
Slope
0.010 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
77.89 %
Intercepted Flow
0.74 cfs
Bypass Flow
0.21 cfs
Spread
6.5 ft
Depth
1.6 in
Flow Area
0.4 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
2.22 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.075
Grate Flow Ratio
0.623
Equivalent Cross Slope
0.072 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.155
Total Interception Length
9.7 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-107A GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
1.05 cfs
Slope
0.010 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
76.03 %
Intercepted Flow
0.80 cfs
Bypass Flow
0.25 cfs
Spread
6.8 ft
Depth
1.6 in
Flow Area
0.5 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
2.28 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.072
Grate Flow Ratio
0.606
Equivalent Cross Slope
0.070 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.147
Total Interception Length
10.2 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-108 GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
1.09 cfs
Slope
0.010 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
75.33 %
Intercepted Flow
0.82 cfs
Bypass Flow
0.27 cfs
Spread
6.9 ft
Depth
1.7 in
Flow Area
0.5 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
2.30 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.070
Grate Flow Ratio
0.600
Equivalent Cross Slope
0.070 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.144
Total Interception Length
10.4 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-108A GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
1.31 cfs
Slope
0.010 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
71.89 %
Intercepted Flow
0.94 cfs
Bypass Flow
0.37 cfs
Spread
7.4 ft
Depth
1.8 in
Flow Area
0.5 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
2.41 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.065
Grate Flow Ratio
0.570
Equivalent Cross Slope
0.067 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.130
Total Interception Length
11.5 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-109 GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.11 cfs
Slope
0.026 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
100.00 %
Intercepted Flow
0.11 cfs
Bypass Flow
0.00 cfs
Spread
2.4 ft
Depth
0.6 in
Flow Area
0.1 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
1.84 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.102
Grate Flow Ratio
0.989
Equivalent Cross Slope
0.102 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.357
Total Interception Length
4.2 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-109A GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.23 cfs
Slope
0.026 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
98.75 %
Intercepted Flow
0.23 cfs
Bypass Flow
0.00 cfs
Spread
3.2 ft
Depth
0.8 in
Flow Area
0.1 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
2.21 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.075
Grate Flow Ratio
0.925
Equivalent Cross Slope
0.097 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.254
Total Interception Length
5.9 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CIA 10 GUTTER
Project Description
Solve For Spread
Input Data
Discharge
0.58 cfs
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Opening Height
0.5 ft
Curb Throat Type
Horizontal
Throat Incline Angle
90.00 degrees
Options
Calculation Option
Use Both
Results
Spread
3.6 ft
Depth
0.9 in
Gutter Depression
0.0 in
Total Depression
2.0 in
Open Grate Area
2.7 ftz
Active Grate Weir Length
5.0 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1
Watertown, CT 06795 USA + 1 -203-755-1666
CIA I I GUTTER
Project Description
Solve For Spread
Input Data
Discharge
1.87 cfs
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
6.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
6.0 ft
Opening Height
0.5 ft
Curb Throat Type
Horizontal
Throat Incline Angle
90.00 degrees
Options
Calculation Option
Use Both
Results
Spread
6.9 ft
Depth
1.7 in
Gutter Depression
0.0 in
Total Depression
2.0 in
Open Grate Area
5.4 ftz
Active Grate Weir Length
8.0 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1
Watertown, CT 06795 USA + 1 -203-755-1666
CIA 12 GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.55 cfs
Slope
0.010 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
87.45 %
Intercepted Flow
0.48 cfs
Bypass Flow
0.07 cfs
Spread
5.3 ft
Depth
1.3 in
Flow Area
0.3 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
1.94 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.093
Grate Flow Ratio
0.715
Equivalent Cross Slope
0.080 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.207
Total Interception Length
7.2 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-201 GUTTER
Project Description
Solve For Spread
Input Data
Discharge
1.84 cfs
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
6.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
6.0 ft
Opening Height
0.5 ft
Curb Throat Type
Horizontal
Throat Incline Angle
90.00 degrees
Options
Calculation Option
Use Both
Results
Spread
6.8 ft
Depth
1.6 in
Gutter Depression
0.0 in
Total Depression
2.0 in
Open Grate Area
5.4 ftz
Active Grate Weir Length
8.0 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1
Watertown, CT 06795 USA + 1 -203-755-1666
CI-202 GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.81 cfs
Slope
0.047 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
85.80 %
Intercepted Flow
0.69 cfs
Bypass Flow
0.12 cfs
Spread
4.6 ft
Depth
1.1 in
Flow Area
0.2 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
3.81 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.030
Grate Flow Ratio
0.781
Equivalent Cross Slope
0.085 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.115
Total Interception Length
13.0 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-202A GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.78 cfs
Slope
0.047 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
86.41 %
Intercepted Flow
0.67 cfs
Bypass Flow
0.11 cfs
Spread
4.5 ft
Depth
1.1 in
Flow Area
0.2 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
3.78 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.030
Grate Flow Ratio
0.787
Equivalent Cross Slope
0.086 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.117
Total Interception Length
12.8 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-203 GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.79 cfs
Slope
0.047 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
86.20 %
Intercepted Flow
0.68 cfs
Bypass Flow
0.11 cfs
Spread
4.6 ft
Depth
1.1 in
Flow Area
0.2 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
3.79 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.030
Grate Flow Ratio
0.785
Equivalent Cross Slope
0.085 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.117
Total Interception Length
12.9 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-203A GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.76 cfs
Slope
0.047 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
86.82 %
Intercepted Flow
0.66 cfs
Bypass Flow
0.10 cfs
Spread
4.5 ft
Depth
1.1 in
Flow Area
0.2 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
3.75 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.030
Grate Flow Ratio
0.792
Equivalent Cross Slope
0.086 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.119
Total Interception Length
12.6 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-204 GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.44 cfs
Slope
0.047 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
94.37 %
Intercepted Flow
0.42 cfs
Bypass Flow
0.02 cfs
Spread
3.7 ft
Depth
0.9 in
Flow Area
0.1 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
3.27 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.039
Grate Flow Ratio
0.878
Equivalent Cross Slope
0.093 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.157
Total Interception Length
9.6 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-204A GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.49 cfs
Slope
0.047 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
93.09 %
Intercepted Flow
0.46 cfs
Bypass Flow
0.03 cfs
Spread
3.8 ft
Depth
0.9 in
Flow Area
0.1 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
3.36 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.037
Grate Flow Ratio
0.862
Equivalent Cross Slope
0.092 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.149
Total Interception Length
10.1 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-205 GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.04 cfs
Slope
0.047 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
100.00 %
Intercepted Flow
0.04 cfs
Bypass Flow
0.00 cfs
Spread
1.5 ft
Depth
0.4 in
Flow Area
0.0 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
1.80 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.106
Grate Flow Ratio
1.000
Equivalent Cross Slope
0.103 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.457
Total Interception Length
3.3 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-205A GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.13 cfs
Slope
0.047 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
100.00 %
Intercepted Flow
0.13 cfs
Bypass Flow
0.00 cfs
Spread
2.3 ft
Depth
0.6 in
Flow Area
0.1 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
2.41 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.065
Grate Flow Ratio
0.995
Equivalent Cross Slope
0.103 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.278
Total Interception Length
5.4 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-206 GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.04 cfs
Slope
0.036 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
100.00 %
Intercepted Flow
0.04 cfs
Bypass Flow
0.00 cfs
Spread
1.6 ft
Depth
0.4 in
Flow Area
0.0 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
1.62 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.125
Grate Flow Ratio
1.000
Equivalent Cross Slope
0.103 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.498
Total Interception Length
3.0 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-207 GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.57 cfs
Slope
0.036 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
90.09 %
Intercepted Flow
0.51 cfs
Bypass Flow
0.06 cfs
Spread
4.3 ft
Depth
1.0 in
Flow Area
0.2 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
3.14 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.041
Grate Flow Ratio
0.816
Equivalent Cross Slope
0.088 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.148
Total Interception Length
10.1 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-207A GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.47 cfs
Slope
0.036 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
92.73 %
Intercepted Flow
0.44 cfs
Bypass Flow
0.03 cfs
Spread
4.0 ft
Depth
1.0 in
Flow Area
0.2 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
2.99 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.045
Grate Flow Ratio
0.847
Equivalent Cross Slope
0.091 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.163
Total Interception Length
9.2 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-208 GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.57 cfs
Slope
0.036 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
90.09 %
Intercepted Flow
0.51 cfs
Bypass Flow
0.06 cfs
Spread
4.3 ft
Depth
1.0 in
Flow Area
0.2 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
3.14 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.041
Grate Flow Ratio
0.816
Equivalent Cross Slope
0.088 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.148
Total Interception Length
10.1 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-208A GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.47 cfs
Slope
0.036 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
92.73 %
Intercepted Flow
0.44 cfs
Bypass Flow
0.03 cfs
Spread
4.0 ft
Depth
1.0 in
Flow Area
0.2 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
2.99 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.045
Grate Flow Ratio
0.847
Equivalent Cross Slope
0.091 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.163
Total Interception Length
9.2 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-209 GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.76 cfs
Slope
0.036 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
85.65 %
Intercepted Flow
0.65 cfs
Bypass Flow
0.11 cfs
Spread
4.7 ft
Depth
1.1 in
Flow Area
0.2 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
3.38 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.037
Grate Flow Ratio
0.768
Equivalent Cross Slope
0.084 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.128
Total Interception Length
11.8 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-209A GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.06 cfs
Slope
0.010 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
100.00 %
Intercepted Flow
0.06 cfs
Bypass Flow
0.00 cfs
Spread
2.3 ft
Depth
0.6 in
Flow Area
0.1 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
1.11 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.218
Grate Flow Ratio
0.995
Equivalent Cross Slope
0.103 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.612
Total Interception Length
2.4 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-209B GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.14 cfs
Slope
0.010 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
99.94 %
Intercepted Flow
0.14 cfs
Bypass Flow
0.00 cfs
Spread
3.2 ft
Depth
0.8 in
Flow Area
0.1 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
1.38 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.160
Grate Flow Ratio
0.928
Equivalent Cross Slope
0.097 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.415
Total Interception Length
3.6 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-209C GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
1.08 cfs
Slope
0.036 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
79.66 %
Intercepted Flow
0.86 cfs
Bypass Flow
0.22 cfs
Spread
5.4 ft
Depth
1.3 in
Flow Area
0.3 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
3.69 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.031
Grate Flow Ratio
0.708
Equivalent Cross Slope
0.079 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.106
Total Interception Length
14.1 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-209D GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.26 cfs
Slope
0.036 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
98.44 %
Intercepted Flow
0.26 cfs
Bypass Flow
0.00 cfs
Spread
3.2 ft
Depth
0.8 in
Flow Area
0.1 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
2.58 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.058
Grate Flow Ratio
0.930
Equivalent Cross Slope
0.097 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.219
Total Interception Length
6.9 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-303 GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.46 cfs
Slope
0.036 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
93.00 %
Intercepted Flow
0.43 cfs
Bypass Flow
0.03 cfs
Spread
3.9 ft
Depth
0.9 in
Flow Area
0.2 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
2.98 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.045
Grate Flow Ratio
0.850
Equivalent Cross Slope
0.091 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.165
Total Interception Length
9.1 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-303A GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
1.58 cfs
Slope
0.036 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
72.82 %
Intercepted Flow
1.15 cfs
Bypass Flow
0.43 cfs
Spread
6.2 ft
Depth
1.5 in
Flow Area
0.4 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
4.05 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.027
Grate Flow Ratio
0.643
Equivalent Cross Slope
0.074 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.087
Total Interception Length
17.3 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-304 GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
0.28 cfs
Slope
0.036 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
97.95 %
Intercepted Flow
0.27 cfs
Bypass Flow
0.01 cfs
Spread
3.3 ft
Depth
0.8 in
Flow Area
0.1 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
2.63 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.056
Grate Flow Ratio
0.921
Equivalent Cross Slope
0.097 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.211
Total Interception Length
7.1 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
CI-305 GUTTER
Project Description
Solve For Efficiency
Input Data
Discharge
1.22 cfs
Slope
0.036 ft/ft
Gutter Width
2.00 ft
Gutter Cross Slope
0.020 ft/ft
Road Cross Slope
0.020 ft/ft
Roughness Coefficient
0.013
Local Depression
2.0 in
Local Depression Width
24.0 in
Grate Width
2.00 ft
Grate Length
3.0 ft
Grate Type
P-50 mm (P-1
-7/8")
Clogging
50.0 %
Curb Opening Length
3.0 ft
Options
Calculation Option
Use Both
Grate Flow Option
Exclude None
Results
Efficiency
77.49 %
Intercepted Flow
0.95 cfs
Bypass Flow
0.27 cfs
Spread
5.7 ft
Depth
1.4 in
Flow Area
0.3 ftz
Gutter Depression
0.0 in
Total Depression
2.0 in
Velocity
3.80 ft/s
Splash Over Velocity
6.99 ft/s
Frontal Flow Factor
1.000
Side Flow Factor
0.030
Grate Flow Ratio
0.687
Equivalent Cross Slope
0.077 ft/ft
Active Grate Length
1.5 ft
Length Factor
0.099
Total Interception Length
15.1 ft
Bentley Systems, Inc. Haestad Methods Solution FlowMaster
Gutter Spread - The Bluffs.fm8 Center [10.03.00.03]
2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2
Watertown, CT 06795 USA + 1 -203-755-1666
Storm Drainage Calculations -10 Year:
STORM CAD ANALYSIS RESULTS
(HEC-22 Energy Headloss Method)
Project: The Bluffs at Wesley Chapel
Job No.: 1021119
Location: Union County, NC
Storm Design: 10 Year
Storm Drainage Calculations - 25 Year:
STORM CAD ANALYSIS RESULTS
(HEC-22 Energy Headloss Method)
Project: The Bluffs at Wesley Chapel
Job No.: 1021119
Location: Union County, NC
Storm Design: 25 Year