SW5240302_Design Calculations_20240419

Siler City Asphalt Plant
Temporary Operations
Formerly (Mid-State Parcel Grading)
Siler City, NC
Stormwater Calcs
March 20, 2024
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301 GLENWOOD AVENUE,SUITE 220,RALEIGH,NC 27603
Phone:[phone] Liscense#C-1739
PROVIDING CIVIL/SITE&INFRASTRUCTURE CONSULTING SERVICES SINCE 1998

INDEX
NARRATIVE
OWNER INFORMATION
USGS MAP
RECEIVING WATER COURSE
NRCS SOILS REPORT
PERMANENT SWALE CALCULATIONS
SEASONAL HIGH WATER TABLE MAPS
SCM WATER QUALITY CALCULATIONS
SCM REPORT
SCM DISSIPATOR CALCULATIONS

Siler City Asphalt Plant (formerly Mid-State Parcel Grading)
PROJECT NARRATIVE
The proposed project consists of the grading of a large, gently graded pad for the purpose of concrete
and asphalt recycling. The project area is approximately 52.94 acres. A disturbed area of
approximately 35.07 acres is planned for the erosion control and grading for this project. Currently
the site is almost entirely clear with limited woodland to the east side of the property. That area
consists of a mix of pines and hardwoods. Elevations range from 628 to 667 within the property. The
site erosion control is presented in one phase with 3 stages illustrated. The erosion control has
previously been approved with an updated submission made and subsequently approved. It includes
the conversion of the basins to the wet ponds. No wetlands or streams are present in the work
footprint. An environmental study was conducted, and the wetlands found have been shown on the
plan. A minimum separation of 50' is proposed from the existing pond and wetlands within the
project boundary and noted accordingly. A specific sequence of construction has been provided for
proposed work.
No roads are proposed as part of this project,only a gravel paved driveway. Stormwater management
is provided for the high density portions of the project area. There are three drainage areas that are
high density by definition, each with an SCM provided to provide water quality treatment.
The soil types for this property are all Type D soils. The pad grade will mimic existing drainage
patterns with measures installed to minimize the potential for rutting and rilling once groundcover is
established.
Piedmont Environmental has conducting the field tests for the SHWTs for each SCM location. That
report is included in the submittal.
Aric Geda, PE of Modulus, PLLC is preparing the appropriate documents for the NCG160000
Stormwater Management for the site in keeping with its use as an asphalt and concrete recycling
plant.
Please find attached all relevant stormwater calculations.

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Surface Water Classifications:
Stream Index: 17-43-7-(1 )
Stream Name: Lacy Creek
Description: From source to a point
approximately 0.6 mile
downstream of
Chatham County SR
1362
Classification: WS-III
Date of Class.: August 2, 1992
What does this Class. View
mean?
River Basin: Cape Fear

USDA United States A product of the National Custom Soil Resource
Department of Cooperative Soil Survey,
Agriculture a joint effort of the United Report for
States Department of
RC S Agriculture and other Chatham County
Federal agencies, State
Naturalagencies including the North Carolina
Resources Agricultural Experiment
Conservation Stations, and local
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Preface
Soil surveys contain information that affects land use planning in survey areas.
They highlight soil limitations that affect various land uses and provide information
about the properties of the soils in the survey areas. Soil surveys are designed for
many different users, including farmers, ranchers, foresters, agronomists, urban
planners, community officials, engineers, developers, builders, and home buyers.
Also, conservationists, teachers, students, and specialists in recreation, waste
disposal, and pollution control can use the surveys to help them understand,
protect, or enhance the environment.
Various land use regulations of Federal, State, and local governments may impose
special restrictions on land use or land treatment. Soil surveys identify soil
properties that are used in making various land use or land treatment decisions.
The information is intended to help the land users identify and reduce the effects of
soil limitations on various land uses. The landowner or user is responsible for
identifying and complying with existing laws and regulations.
Although soil survey information can be used for general farm, local, and wider area
planning, onsite investigation is needed to supplement this information in some
cases. Examples include soil quality assessments (http://www.nrcs.usda.gov/wps/
portal/nrcs/main/soils/health/) and certain conservation and engineering
applications. For more detailed information, contact your local USDA Service Center
(https://offices.sc.egov.usda.gov/locator/app?agency=nrcs)or your NRCS State Soil
Scientist(http://www.nres.usda.gov/wps/portal/nres/detail/soils/contactus/?
cid=nrcs142p2_053951).
Great differences in soil properties can occur within short distances. Some soils are
seasonally wet or subject to flooding. Some are too unstable to be used as a
foundation for buildings or roads. Clayey or wet soils are poorly suited to use as
septic tank absorption fields. A high water table makes a soil poorly suited to
basements or underground installations.
The National Cooperative Soil Survey is a joint effort of the United States
Department of Agriculture and other Federal agencies, State agencies including the
Agricultural Experiment Stations, and local agencies. The Natural Resources
Conservation Service (NRCS) has leadership for the Federal part of the National
Cooperative Soil Survey.
Information about soils is updated periodically. Updated information is available
through the NRCS Web Soil Survey, the site for official soil survey information.
The U.S. Department of Agriculture (USDA) prohibits discrimination in all its
programs and activities on the basis of race, color, national origin, age, disability,
and where applicable, sex, marital status, familial status, parental status, religion,
sexual orientation, genetic information, political beliefs, reprisal, or because all or a
part of an individual's income is derived from any public assistance program. (Not
all prohibited bases apply to all programs.) Persons with disabilities who require
2

alternative means for communication of program information (Braille, large print,
audiotape, etc.) should contact USDA's TARGET Center at [phone] (voice
and TDD). To file a complaint of discrimination, write to USDA, Director, Office of
Civil Rights, 1400 Independence Avenue, S.W., Washington, D.C. 20250-9410 or
call [phone] (voice)or(202) 720-6382 (TDD). USDA is an equal opportunity
provider and employer.
3

Contents
Preface 2
Soil Map 5
Soil Map 6
Legend 7
Map Unit Legend 8
Map Unit Descriptions 8
Chatham County, North Carolina 10
CkC—Cid silt loam, 6 to 10 percent slopes 10
CmB—Cid-Lignum complex, 2 to 6 percent slopes 11
NaC—Nanford-Badin complex, 6 to 10 percent slopes 13
W—Water 14
4

Soil Map
The soil map section includes the soil map for the defined area of interest, a list of
soil map units on the map and extent of each map unit, and cartographic symbols
displayed on the map. Also presented are various metadata about data used to
produce the map, and a description of each soil map unit.
5

Custom Soil Resource Report
M Soil Map N
p
M N
634800 634900 635000 635100 635200 635300 6354W 635500 635600 635700 635800 635900 636000 636100
35°45'21"N . _-0 - 35°45'21"N
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634800 634900 635000 635100 6352W 635300 635400 635500 635600 635700 635800 635900 636000 6361W 636200
3 3
E. Co
b Map Scale:1:6,720 if printed on A landscape(11"x 8.5")sheet.
Meters N
0 50 100 200 300
Feet
0 300 600 1200 1800
Map projection:Web Mercator Comer coordinates:WGS84 Edge tics:UTM Zone 17N WGS84
6

Custom Soil Resource Report
MAP LEGEND MAP INFORMATION
Area of Interest(AOI) 14 Spoil Area The soil surveys that comprise your AOI were mapped at
Area of Interest(AOI) 1:24,000.
Q Stony Spot
Soilsit Very Stony Spot
0 Soil Map Unit Polygons Warning:Soil Map may not be valid at this scale.
Wet Spot
,..,. Soil Map Unit Lines Enlargement of maps beyond the scale of mapping can cause
p Other misunderstandingof the detail of mapping and accuracyof soil
p Soil Map Unit Points pp 9
.• Special Line Features line placement.The maps do not show the small areas of
Special Point Features contrasting soils that could have been shown at a more detailed
Blowout Water Features scale.
-_- Streams and Canals
kg Borrow Pit
Transportation Please rely on the bar scale on each map sheet for map
* clay Spot 1.44 Rails measurements.
0 Closed Depression
o,/ Interstate Highways
Gravel Pit Source of Map: Natural Resources Conservation Service
.r US Routes Web Soil Survey URL:
Gravelly Spot Major Roads Coordinate System: Web Mercator(EPSG:3857)
® Landfill Local Roads Maps from the Web Soil Survey are based on the Web Mercator
• Lava Flow Background projection,which preserves direction and shape but distorts
distance and area.A projection that preserves area,such as the
46 Marsh or swamp Aerial Photography Albers equal-area conic projection,should be used if more
It Mine or Quarry accurate calculations of distance or area are required.
4 Miscellaneous Water This product is generated from the USDA-NRCS certified data as
O Perennial Water of the version date(s)listed below.
v Rock Outcrop Soil Survey Area: Chatham County, North Carolina
+ Saline Spot Survey Area Data: Version 27,Sep 13,2023
Sandy Spot Soil map units are labeled(as space allows)for map scales
Severely Eroded Spot 1:50,000 or larger.
• Sinkhole Date(s)aerial images were photographed: Apr 23,2022—Apr
31 Slide or Slip 27,2022
oa Sodic Spot 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.
7

Custom Soil Resource Report
Map Unit Legend
Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI
CkC Cid silt loam,6 to 10 percent 7.8 13.8%
slopes
CmB Cid-Lignum complex,2 to 6 46.5 82.3%
percent slopes
NaC Nanford-Badin complex,6 to 10 1.6 2.7%
percent slopes
W Water 0.7 1.2%
Totals for Area of Interest 56.6 100.0%
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
8

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.
9

Custom Soil Resource Report
Chatham County, North Carolina
CkC—Cid silt loam, 6 to 10 percent slopes
Map Unit Setting
National map unit symbol: 1 Ivt5
Elevation: 150 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: Farmland of statewide importance
Map Unit Composition
Cid and similar soils: 70 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Cid
Setting
Landform: Hillslopes on ridges
Landform position (two-dimensional): Summit, shoulder
Landform position (three-dimensional): Side slope
Down-slope shape: Concave
Across-slope shape: Convex
Parent material: Residuum weathered from metavolcanics and/or argillite
Typical profile
Ap- 0 to 2 inches: silt loam
E-2 to 5 inches: silt loam
Bt1 -5 to 14 inches: silty clay loam
Bt2- 14 to 24 inches: silty clay
BC-24 to 28 inches: silty clay loam
Cr-28 to 35 inches: weathered bedrock
R-35 to 80 inches: unweathered bedrock
Properties and qualities
Slope: 6 to 10 percent
Depth to restrictive feature: 20 to 40 inches to paralithic bedrock; 20 to 40 inches
to lithic bedrock
Drainage class: Moderately well drained
Runoff class: Very high
Capacity of the most limiting layer to transmit water(Ksat):Very low to moderately
high (0.00 to 0.20 in/hr)
Depth to water table:About 12 to 30 inches
Frequency of flooding: None
Frequency of ponding: None
Available water supply, 0 to 60 inches: Low(about 4.0 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 3e
Hydrologic Soil Group: D
Ecological site: F136XY815NC -Acidic upland woodland, depth restriction,
seasonally wet and dry
Hydric soil rating: No
10

Custom Soil Resource Report
CmB—Cid-Lignum complex, 2 to 6 percent slopes
Map Unit Setting
National map unit symbol: 1 Ivt7
Elevation: 150 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: Farmland of statewide importance
Map Unit Composition
Cid and similar soils: 50 percent
Lignum and similar soils: 20 percent
Minor components: 2 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Cid
Setting
Landform: Interfluves
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down-slope shape: Convex
Across-slope shape: Linear
Parent material: Residuum weathered from metavolcanics and/or argillite
Typical profile
Ap- 0 to 2 inches: silt loam
E-2 to 5 inches: silt loam
Bt1 -5 to 14 inches: silty clay loam
Bt2- 14 to 24 inches: silty clay
BC-24 to 28 inches: silty clay loam
Cr-28 to 35 inches: weathered bedrock
R-35 to 80 inches: unweathered bedrock
Properties and qualities
Slope: 2 to 6 percent
Depth to restrictive feature: 20 to 40 inches to paralithic bedrock; 20 to 40 inches
to lithic bedrock
Drainage class: Moderately well drained
Runoff class: Very high
Capacity of the most limiting layer to transmit water(Ksat):Very low to moderately
high (0.00 to 0.20 in/hr)
Depth to water table:About 12 to 30 inches
Frequency of flooding: None
Frequency of ponding: None
Available water supply, 0 to 60 inches: Low(about 4.1 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2e
11

Custom Soil Resource Report
Hydrologic Soil Group: D
Ecological site: F136XY815NC -Acidic upland woodland, depth restriction,
seasonally wet and dry
Hydric soil rating: No
Description of Lignum
Setting
Landform: Interfluves
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down-slope shape: Convex
Across-slope shape: Linear
Parent material: Residuum weathered from metavolcanics and/or argillite
Typical profile
Ap- 0 to 6 inches: silt loam
E- 6 to 11 inches: silt loam
Bt1 - 11 to 22 inches: silty clay
Bt2-22 to 29 inches: silty clay
BC-29 to 47 inches: silty clay
Cr-47 to 80 inches: weathered bedrock
Properties and qualities
Slope: 2 to 6 percent
Depth to restrictive feature:40 to 60 inches to paralithic bedrock
Drainage class: Moderately well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water(Ksat):Very low to moderately
low(0.00 to 0.06 in/hr)
Depth to water table:About 12 to 30 inches
Frequency of flooding: None
Frequency of ponding: None
Available water supply, 0 to 60 inches: Moderate (about 6.9 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2e
Hydrologic Soil Group: D
Ecological site: F136XY810SC-Acidic upland forest, seasonally wet
Hydric soil rating: No
Minor Components
Wehadkee, undrained
Percent of map unit:2 percent
Landform: Depressions on flood plains
Down-slope shape: Concave
Across-slope shape: Linear
Hydric soil rating: Yes
12

Custom Soil Resource Report
NaC—Nanford-Badin complex, 6 to 10 percent slopes
Map Unit Setting
National map unit symbol: 1 Ivxn
Elevation: 300 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: Farmland of statewide importance
Map Unit Composition
Nanford and similar soils: 50 percent
Badin and similar soils: 30 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Nanford
Setting
Landform: Hillslopes on ridges
Landform position (two-dimensional): Summit, shoulder
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
Ap- 0 to 3 inches: silt loam
E-3 to 7 inches: silt loam
Bt1 - 7 to 12 inches: silty clay
Bt2- 12 to 27 inches: silty clay
BC-27 to 38 inches: silty clay loam
C-38 to 57 inches: silt loam
Cr-57 to 80 inches: weathered bedrock
Properties and qualities
Slope: 6 to 10 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: Moderate (about 7.9 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 3e
13

Custom Soil Resource Report
Hydrologic Soil Group: B
Ecological site: F136XY820GA-Acidic upland forest, moist
Hydric soil rating: No
Description of Badin
Setting
Landform: Hillslopes on ridges
Landform position (two-dimensional): Summit, shoulder
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
Ap- 0 to 6 inches: silt loam
Bt- 6 to 24 inches: clay
BC-24 to 32 inches: channery silty clay loam
Cr-32 to 80 inches: weathered bedrock
Properties and qualities
Slope: 6 to 10 percent
Depth to restrictive feature: 20 to 40 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 5.5 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 3e
Hydrologic Soil Group: C
Ecological site: F136XY830NC -Acidic upland forest, depth restriction, dry-moist
Hydric soil rating: No
W—Water
Map Unit Composition
Water: 100 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Water
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 8
Hydric soil rating: No
14

Custom Soil Resource Report
15

Permanent Swale Calculations
Drainage Area Data Swale Data Additional Flow
Upper Lower Ditch Bottom Side Depth d Q
Swale ID Woods Paved Grass C Elev. Elev. Length Slope Width(B) Slope (guess) D A P R=A/P Velocity W Q(CIA) (Compare) Ditch/Pipes Flow
(AC) (AC) (AC) (ft) (ft) (x:1) (ft) (ft) (sf) (ft) (fps) (ft) (cfs) (cfs) (cfs)
PDS#1 0.76 0.35 659.76 658.31 187.00 0.78% 0 3 0.6630 1.2 1.319 4.193 0.314 1.5 7.2 2.00 2.00
PDS#2 0.51 0.35 660.19 656.79 107.00 3.18% 0 3 0.4580 1.0 0.629 2.897 0.217 2.1 6.0 1.34 1.34
PDS#3 1.17 0.35 663.87 658.32 438.00 1.27% 0 3 0.7110 1.2 1.517 4.497 0.337 2.0 7.2 3.08 3.08
PDS#4 0.80 0.35 658.00 654.00 239.00 1.67% 0 3 0.5860 1.1 1.030 3.706 0.278 2.0 6.6 2.11 2.11
PDS#5A 0.38 0.35 656.70 654.00 144.00 1.88% 0 3 0.4520 1.0 0.613 2.859 0.214 1.6 6.0 1.00 1.00
PDS#513 8.86 0.35 654.00 635.00 1063.00 1.79% 4 3 1.0520 1.6 7.528 10.653 0.707 3.5 13.6 26.43 26.44 PDS#4 PDS#5A 2.11 1.00
PDS#6 1.28 0.35 643.73 639.00 230.00 2.06% 0 3 0.6710 1.2 1.351 4.244 0.318 2.5 7.2 3.37 3.36
PDS#7 7.61 0.35 658.00 650.00 957.00 0.84% 2 3 1.2570 1.8 7.254 9.950 0.729 2.8 12.8 20.03 20.01
PDS#8 0.05 0.35 652.02 650.00 54.00 3.74% 0 3 0.3200 1.0 0.307 2.024 0.152 2.1 6.0 0.63 0.63 PDS#9 0.50
PDS#9 0.19 0.35 655.01 652.10 94.00 3.10% 0 3 0.3180 1.0 0.303 2.011 0.151 1.6 6.0 0.50 0.50
PDS#10 3.22 0.35 647.88 639.00 420.00 2.11% 2 3 0.7170 1.2 2.976 6.535 0.455 2.8 9.2 8.48 8.48
PDS#11 0.91 0.35 644.51 639.00 357.00 1.54% 2 3 0.3870 1.0 1.223 4.448 0.275 2.0 8.0 2.40 2.39
CWDS#1 8.54 0.35 666.05 637.39 1146.00 2.50% 3 3 0.9250 1.4 5.342 8.850 0.604 4.2 11.4 22.48 22.47
CH#1 3.13 0.35 656.00 646.00 541.07 1.85% 2 3 0.4630 1.0 1.569 4.928 0.318 5.3 8.0 8.24 8.23
CH#2 1.79 0.35 650.00 642.00 357.04 2.24% 0 3 0.5550 1.1 0.924 3.510 0.263 5.1 6.6 4.71 4.70
CH#3 1.66 0.35 656.00 650.00 390.79 1.54% 0 3 0.5790 1.1 1.006 3.662 0.275 4.3 6.6 4.37 4.36
CH#4 4.12 0.35 653.00 639.00 639.48 2.19% 2 3 0.5100 1.0 1.800 5.226 0.345 6.0 8.0 10.84 10.84

Swale Calculations
Swale Linings
Shear Check
Stress Velocity Shear
Swale ID Lining Type Manningsn (Max) (Max) Stress Shear OK? Velocity OK?
(T=yds)
PDS#1 Grass 0.04 2.50 4.00 0.32 YES YES
PDS#2 Grass 0.045 2.50 4.00 0.91 YES YES
PDS#3 Grass 0.04 2.50 4.00 0.56 YES YES
PDS#4 Grass 0.04 2.50 4.00 0.61 YES YES
PDS#5A Grass 0.045 2.50 4.00 0.53 YES YES
PDS#5B Grass 0.045 2.50 4.00 1.17 YES YES
PDS#6 Grass 0.04 2.50 4.00 0.86 YES YES
PDS#7 Grass 0.04 2.50 4.00 0.66 YES YES
PDS#8 Grass 0.04 2.50 4.00 0.75 YES YES
PDS#9 Grass 0.045 2.50 4.00 0.61 YES YES
PDS#10 Grass 0.045 2.50 4.00 0.95 YES YES
PDS#11 Grass 0.04 2.50 4.00 0.37 YES YES
CWDS#1 Eronet SC150 0.04 2.00 8.00 1.44 YES YES
CH#1 Eronet SC150 0.018 2.00 8.00 0.53 YES YES
CH#2 Eronet SC150 0.018 2.00 8.00 0.78 YES YES
CH#3 Eronet SC150 0.018 2.00 8.00 0.55 YES YES
CH#4 Eronet SC150 0.018 2.00 8.00 0.70 YES YES

wirPIEDMONT
ENVIRONMENTAL
ASSOCIATES , P . A .
01/25/2024 Project# 5159
Boggs Properties
c/o: Arnold Mann
P.O. Box 1609
Monroe,NC 28111
This report details the findings of a seasonally high-water table 1204 Stockyard Road,
Staley,NC. Your office gave the location of the proposed storm water control measures
(SCMs). G. Christopher Murray, Licensed Soil Scientist#1284, conducted the
evaluation in February 2024. The results were as follows:
Seasonally High-Water Table Soil Borings
Soil borings were conducted at the locations specified on the attached map, and the depth
to the seasonally high-water table (SHWT) was determined by observing soil indicators,
also known as redoximorphic features.
SHWT B1
Soil boring locations are shown on the attached map. Signs of a seasonally high-water
table were observed from 13 inches below the ground surface to the cessation of
boring at 20 inches where hand auger refusal was encountered. The native elevation
in this area was approximately 641'.
SHWT B2
Soil boring locations are shown on the attached map. Signs of a seasonally high-water
table were observed form 30 inches below the ground surface to the cessation of
boring at 156 inches. The native elevation in this area was approximately 643'.
SHWT B3
Soil boring locations are shown on the attached map. Signs of a seasonally high-water
table were observed from 32 inches below the ground surface to the cessation of
boring at 152 inches where hand auger refusal was encountered. The native
elevation in this area was approximately 654'.
Boring ID SHWT Depth (inches) SHWT Elevation (feet)
B-1 13-20 639.9-639.3
B-2 30-156 640.5-630
B-3 32-152 651.3-641.3
216 S. Swing Rd., Suite 1 Greensboro, NC 27409 336-662-5487

Piedmont Environmental Associates, PA is pleased to perform this work for you. If you
have any questions, please feel free to call [phone].
Sincerely,
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G. Christopher Murray
N.C. Licensed Soil Scientist#1284

SHWT Boring Locations Map - 1204 Stockyard Road
PIEDMONT Job# 5159
ENVIRONMENTAL 216 S. Swing Rd. Suite 1
ASSOCIATES A Greensboro, NC 27409 Date: 2/12/2024
piedmontsoil.com Client: Boggs Properties
County: Randolph
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NRCS Soil Survey Map - 1204 Stockyard Road
dalPIEDMONT
Job# 5159
ENVIRONMENTAL 216 S. Swing Rd. Suite 1
A S S O C I A T E S . P . A Greensboro, NC 27409 Date: 2/12/2024
piedmontsoil.com Client: Boggs Properties
County: Randolph
MAP NOT VALID WITHOUT REPORT
W
SOIL Sc,6 ,�
G4coPHER 'lam Z4r /tii-
/
Legend ifG �
* SHWT Boring Locations F'f u ., ^ '�' '• '/� t ��
Pro e Line 6 . ` ' �)'.
7je 128,11 ' g B D feet
� 1 ..
Cid-Lignum -
. - complex, 2 to 6
percent slopes
• •OAItDf3
Water -
Cid silt
loam, 6 to 10 . --A-- B-3
percent slopes SHWT B-1
•
5159
NC CGIA,Maxar,Microsoft

200-143 SILER CITY ASPHALT PLANT TEMP
SCM#01
IMPERVIOUS CALCULATIONS only edit values in yellow boxes
Post-developed water quality storage volume requirements:
SCM Assumptions(not used in calcs)
CN SF (enter number only)
91 Impervious-Gravel Pad 1 439,877 439,877 sf 3:1 Slope-Dam Face
0 Impervious-Out of DA 0 0 0 sf For Main Body:
0 Impervious-Roads/Walks/Structures 0 sf 3:1 Slope-Above WSE
0 Impervious-Accounted for from outside Drainage Area 0 sf 2:1 Slope-Below WSE
439,877 sf For Forebay:
or 10.10 ac 3:1 Slope-Above WSE
3:1 Slope-Below WSE
Total Drainage Area to SCM= 12.47 ac. 10 feet Dam Width
Impervious Area to SCM= 10.10 ac. 6 feet Littoral Shelf Width
Impervious Percentage to SCM= 81.0% 10 feet wide Emergency Spillway
Simple Method for Runoff Volume(Schueler 1987)
Rv=0.05+0.9*IA R v = 0.7788 Rv=Runoff Coefficient IA=Impervious Fraction
DV=3,630*RD*Rv*A DV=Design Volume RD=Design Storm Depth A=Drainage Area
DV= 35,254 Design Storm Depth= 1 "
35,254 ft3 Storage Volume Required
36,480 ft3 Storage Volume Provided
Surface Area to Drainage Area Ratio&Average Depth Method
Average Depth of Main Pool
DAVG=Vpp/App DAVG=Average Depth Vpp=Volume of Permanent Pool App=Area of Permanent Pool
DAVG= 4.41 DAVG Used= 4.0
Surface Area/Drainage Area Ratio
Impervious%= 80.98
SA/DA Ratio= 2.43 (Interpolated from Section C-3 Wet Pond-Table 1-NCDEQ BMP Manual)
SA Required= 0.3033 (In Acres)
13,213 ft2 Surface Area Required Minimum Length: 201 FT Width: 67 FT (3:1 Ratio)
15,580 ft2 Surface Area Provided(from Civil3D)-Add forebay and main pond areas
Main Pool Volume from Civil 3D 55,944 CF Get CY from Civil3D and multiply by 27 for CF
Forebay#1
Total Forebay Volume= 15%-20%of Main Pool Volume
Drainage to Forebay= 12.47
%of Total Drainage= 100.00%
Main Pool Volume= 55,944
Forebay Volume Required(15-20%)= 8,392(Min) 11,189(Max)
Forebay Volume Provided= 10,206 18.24% Good Get CY from Civil3D and multiply by 27 for CF
Determine Temporary Pool Elevation
Contour Contour/Feature Line Incr. Accum. Stage
Elev. Area Storage Storage(S) (Z)
(ft) (sf) (cf) (cf) (ft) In(S) In(Z) Z est
634.0 WSE 16,496 - - 0.00
634.5 Top of Litoral Shelf 18,158 8,664 8,664 0.50 9.07 -0.69 0.50
639.0 Inside Top of Berm 26,337 100,114 108,777 5.00 11.60 1.61 5.00
635.85 Temp.Pool Elevation 36,480 Calculated by Regression analysis
P:\200(Lee-Moore)\200-143(Mid-State Parcel 12876 Early Pad Plan)\Calcs\Stormwater\200-143-SCM Sizing for use with Civil 3D.xlsx

200-143 SILER CITY ASPHALT PLANT TEMP
SCM#02
IMPERVIOUS CALCULATIONS only edit values in yellow boxes
Post-developed water quality storage volume requirements:
SCM Assumptions(not used in calcs)
CN SF (enter number only)
91 Impervious-Gravel Pad 1 192,989 192,989 sf 3:1 Slope-Dam Face
0 Impervious-Out of DA 0 0 0 sf For Main Body:
0 Impervious-Roads/Walks/Structures 0 sf 3:1 Slope-Above WSE
0 Impervious-Accounted for from outside Drainage Area 0 sf 2:1 Slope-Below WSE
192,989 sf For Forebay:
or 4.43 ac 3:1 Slope-Above WSE
3:1 Slope-Below WSE
Total Drainage Area to SCM= 8.48 ac. 10 feet Dam Width
Impervious Area to SCM= 4.43 ac. 6 feet Littoral Shelf Width
Impervious Percentage to SCM= 52.2% 10 feet wide Emergency Spillway
Simple Method for Runoff Volume(Schueler 1987)
Rv=0.05+0.9*IA R v = 0.5202 Rv=Runoff Coefficient IA=Impervious Fraction
DV=3,630*RD*Rv*A DV=Design Volume RD=Design Storm Depth A=Drainage Area
DV= 16,013 Design Storm Depth= 1 "
16,013 ft3 Storage Volume Required
16,459 ft3 Storage Volume Provided
Surface Area to Drainage Area Ratio&Average Depth Method
Average Depth of Main Pool
DAVG=Vpp/App DAVG=Average Depth Vpp=Volume of Permanent Pool App=Area of Permanent Pool
DAVG= 3.28 DAVG Used= 3.0
Surface Area/Drainage Area Ratio
Impervious%= 52.25
SA/DA Ratio= 1.86 (Interpolated from Section C-3 Wet Pond-Table 1-NCDEQ BMP Manual)
SA Required= 0.1575 (In Acres)
6,861 ft2 Surface Area Required Minimum Length: 144 FT Width: 48 FT (3:1 Ratio)
11,499 ft2 Surface Area Provided(from Civil3D)-Add forebay and main pond areas
Main Pool Volume from Civil 3D 31,185 CF Get CY from Civil3D and multiply by 27 for CF
Forebay#1
Total Forebay Volume= 15%-20%of Main Pool Volume
Drainage to Forebay= 8.48
%of Total Drainage= 100.00%
Main Pool Volume= 31,185
Forebay Volume Required(15-20%)= 4,678(Min) 6,237(Max)
Forebay Volume Provided= 4,806 15.41% Good Get CY from Civil3D and multiply by 27 for CF
Determine Temporary Pool Elevation
Contour Contour/Feature Line Incr. Accum. Stage
Elev. Area Storage Storage(S) (Z)
(ft) (sf) (cf) (cf) (ft) In(S) In(Z) Z est
643.5 WSE 13,446 - - 0.00
644.0 Top of Litoral Shelf 15,259 7,176 7,176 0.50 8.88 -0.69 0.50
648.0 Inside Top of Berm 23,078 76,674 83,850 4.50 11.34 1.50 4.50
644.55 Temp.Pool Elevation 16,459 Calculated by Regression analysis
P:\200(Lee-Moore)\200-143(Mid-State Parcel 12876 Early Pad Plan)\Calcs\Stormwater\200-143-SCM Sizing for use with Civil 3D.xlsx

200-143 SILER CITY ASPHALT PLANT TEMP
SCM#03
IMPERVIOUS CALCULATIONS only edit values in yellow boxes
Post-developed water quality storage volume requirements:
SCM Assumptions(not used in calcs)
CN SF (enter number only)
91 Impervious-Gravel Pad 1 227,929 227,929 sf 3:1 Slope-Dam Face
0 Impervious-Out of DA 0 0 0 sf For Main Body:
0 Impervious-Roads/Walks/Structures 0 sf 3:1 Slope-Above WSE
0 Impervious-Accounted for from outside Drainage Area 0 sf 2:1 Slope-Below WSE
227,929 sf For Forebay:
or 5.23 ac 3:1 Slope-Above WSE
3:1 Slope-Below WSE
Total Drainage Area to SCM= 6.22 ac. 10 feet Dam Width
Impervious Area to SCM= 5.23 ac. 6 feet Littoral Shelf Width
Impervious Percentage to SCM= 84.1% 10 feet wide Emergency Spillway
Simple Method for Runoff Volume(Schueler 1987)
Rv=0.05+0.9*IA R v = 0.8068 Rv=Runoff Coefficient IA=Impervious Fraction
DV=3,630*RD*Rv*A DV=Design Volume RD=Design Storm Depth A=Drainage Area
DV= 18,224 Design Storm Depth= 1 "
18,224 ft3 Storage Volume Required
18,983 ft3 Storage Volume Provided
Surface Area to Drainage Area Ratio&Average Depth Method
Average Depth of Main Pool
DAVG=Vpp/App DAVG=Average Depth Vpp=Volume of Permanent Pool App=Area of Permanent Pool
DAVG= 4.20 DAVG Used= 4.0
Surface Area/Drainage Area Ratio
Impervious%= 84.09
SA/DA Ratio= 2.50 (Interpolated from Section C-3 Wet Pond-Table 1-NCDEQ BMP Manual)
SA Required= 0.1558 (In Acres)
6,787 ft2 Surface Area Required Minimum Length: 144 FT Width: 48 FT (3:1 Ratio)
10,398 ft2 Surface Area Provided(from Civil3D)-Add forebay and main pond areas
Main Pool Volume from Civil 3D 35,316 CF Get CY from Civil3D and multiply by 27 for CF
Forebay#1
Total Forebay Volume= 15%-20%of Main Pool Volume
Drainage to Forebay= 6.22
%of Total Drainage= 100.00%
Main Pool Volume= 35,316
Forebay Volume Required(15-20%)= 5,297(Min) 7,063(Max)
Forebay Volume Provided= 6,291 17.81% Good Get CY from Civil3D and multiply by 27 for CF
Determine Temporary Pool Elevation
Contour Contour/Feature Line Incr. Accum. Stage
Elev. Area Storage Storage(S) (Z)
(ft) (sf) (cf) (cf) (ft) In(S) In(Z) Z est
636.0 WSE 10,436 - - 0.00
636.5 Top of Litoral Shelf 11,801 5,559 5,559 0.50 8.62 -0.69 0.50
640.5 Inside Top of Berm 17,829 59,260 64,819 4.50 11.08 1.50 4.50
637.50 Temp.Pool Elevation 18,983 Calculated by Regression analysis
P:\200(Lee-Moore)\200-143(Mid-State Parcel 12876 Early Pad Plan)\Calcs\Stormwater\200-143-SCM Sizing for use with Civil 3D.xlsx

Table of Contents Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Basin Model Schematic 1
Hydrograph by Return Period 2
1 -Year
Hydrograph Summary 3
Hydrograph Reports
Hydrograph No. 1, NRCS Runoff, Pre SCM01 4
Hydrograph No. 2, NRCS Runoff, Post SCM01 5
Hydrograph No. 3, NRCS Runoff, Pre SCM02 6
Hydrograph No. 4, NRCS Runoff, Post SCM02 7
Hydrograph No. 5, Pond Route, Post SCM01 Pond 8
Detention Pond Reports-SCM01 9
Hydrograph No. 6, Pond Route, Post SCM02 Pond 13
Detention Pond Reports-SCM02 14
Hydrograph No. 7, NRCS Runoff, Pre SCM03 18
Hydrograph No. 8, NRCS Runoff, Post SCM03 19
Hydrograph No. 9, Pond Route, Post SCM03 Pond 20
Detention Pond Reports-SCM03 21
Design Storm Report- NRCS/SCS-Type II, 24-hr 25
2 -Year
Hydrograph Summary 26
Hydrograph Reports
Hydrograph No. 1, NRCS Runoff, Pre SCM01 27
Hydrograph No. 2, NRCS Runoff, Post SCM01 28
Hydrograph No. 3, NRCS Runoff, Pre SCM02 29
Hydrograph No. 4, NRCS Runoff, Post SCM02 30
Hydrograph No. 5, Pond Route, Post SCM01 Pond 31
Hydrograph No. 6, Pond Route, Post SCM02 Pond 32
Hydrograph No. 7, NRCS Runoff, Pre SCM03 33
Hydrograph No. 8, NRCS Runoff, Post SCM03 34
Hydrograph No. 9, Pond Route, Post SCM03 Pond 35
Design Storm Report- NRCS/SCS-Type II, 24-hr 36
10 -Year
Hydrograph Summary 37
Hydrograph Reports
Hydrograph No. 1, NRCS Runoff, Pre SCM01 38
Hydrograph No. 2, NRCS Runoff, Post SCM01 39

Contents continued...
Hydrograph No. 3, NRCS Runoff, Pre SCM02 40
Hydrograph No. 4, NRCS Runoff, Post SCM02 41
Hydrograph No. 5, Pond Route, Post SCM01 Pond 42
Hydrograph No. 6, Pond Route, Post SCM02 Pond 43
Hydrograph No. 7, NRCS Runoff, Pre SCM03 44
Hydrograph No. 8, NRCS Runoff, Post SCM03 45
Hydrograph No. 9, Pond Route, Post SCM03 Pond 46
Design Storm Report- NRCS/SCS-Type II, 24-hr 47
25 -Year
Hydrograph Summary 48
Hydrograph Reports
Hydrograph No. 1, NRCS Runoff, Pre SCM01 49
Hydrograph No. 2, NRCS Runoff, Post SCM01 50
Hydrograph No. 3, NRCS Runoff, Pre SCM02 51
Hydrograph No. 4, NRCS Runoff, Post SCM02 52
Hydrograph No. 5, Pond Route, Post SCM01 Pond 53
Hydrograph No. 6, Pond Route, Post SCM02 Pond 54
Hydrograph No. 7, NRCS Runoff, Pre SCM03 55
Hydrograph No. 8, NRCS Runoff, Post SCM03 56
Hydrograph No. 9, Pond Route, Post SCM03 Pond 57
Design Storm Report- NRCS/SCS-Type II, 24-hr 58
50 -Year
Hydrograph Summary 59
Hydrograph Reports
Hydrograph No. 1, NRCS Runoff, Pre SCM01 60
Hydrograph No. 2, NRCS Runoff, Post SCM01 61
Hydrograph No. 3, NRCS Runoff, Pre SCM02 62
Hydrograph No. 4, NRCS Runoff, Post SCM02 63
Hydrograph No. 5, Pond Route, Post SCM01 Pond 64
Hydrograph No. 6, Pond Route, Post SCM02 Pond 65
Hydrograph No. 7, NRCS Runoff, Pre SCM03 66
Hydrograph No. 8, NRCS Runoff, Post SCM03 67
Hydrograph No. 9, Pond Route, Post SCM03 Pond 68
Design Storm Report- NRCS/SCS-Type II, 24-hr 69
100 -Year
Hydrograph Summary 70

Contents continued...
Hydrograph Reports
Hydrograph No. 1, NRCS Runoff, Pre SCM01 71
Hydrograph No. 2, NRCS Runoff, Post SCM01 72
Hydrograph No. 3, NRCS Runoff, Pre SCM02 73
Hydrograph No. 4, NRCS Runoff, Post SCM02 74
Hydrograph No. 5, Pond Route, Post SCM01 Pond 75
Hydrograph No. 6, Pond Route, Post SCM02 Pond 76
Hydrograph No. 7, NRCS Runoff, Pre SCM03 77
Hydrograph No. 8, NRCS Runoff, Post SCM03 78
Hydrograph No. 9, Pond Route, Post SCM03 Pond 79
Design Storm Report- NRCS/SCS-Type II, 24-hr 80
IDF Report 81
Precipitation Report 82

Basin Model Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Pre SCM01 Post SCM01
Post SCM01 Pond
///// /////
Pre SCM02 Post SCM02
///// ///// pi Post SCM02 Pond
Pre SCM03 Post SCM03 1
impPost SCM03 Pond
/fill /////
1

Hydrograph by Return Period Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Hyd. Hydrograph Hydrograph Peak Outflow(cfs)
No. Type Name 1-yr 2-yr 3-yr 5-yr 10-yr 25-yr 50-yr 100-yr
1 NRCS Runoff Pre SCM01 8.618 14.63 30.01 40.24 48.63 57.53
2 NRCS Runoff Post SCM01 18.51 26.45 44.82 56.16 64.98 74.14
3 NRCS Runoff Pre SCM02 5.860 9.952 20.41 27.37 33.07 39.12
4 NRCS Runoff Post SCM02 9.963 14.85 26.86 34.49 40.46 46.71
5 Pond Route Post SCM01 Pond 0.405 0.505 4.831 12.12 18.80 25.36
6 Pond Route Post SCM02 Pond 0.185 0.517 2.809 5.228 7.115 9.091
7 NRCS Runoff Pre SCM03 4.471 7.593 15.57 20.88 25.23 29.85
8 NRCS Runoff Post SCM03 9.532 13.65 23.17 29.05 33.63 38.38
9 Pond Route Post SCM03 Pond 0.152 0.341 2.478 6.415 10.55 11.99
2

Hydrograph 1 -yr Summary Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Hyd. Hydrograph Hydrograph Peak Time to Hydrograph Inflow Maximum Maximum
No. Type Name Flow Peak Volume Hyd(s) Elevation Storage
(cfs) (hrs) (cuft) (ft) (cuft)
1 NRCS Runoff Pre SCM01 8.618 11.97 17,847 ----
2 NRCS Runoff Post SCM01 18.51 11.93 37,375 ----
3 NRCS Runoff Pre SCM02 5.860 11.97 12,137 ----
4 NRCS Runoff Post SCM02 9.963 11.97 19,935 ----
5 Pond Route Post SCM01 Pond 0.405 15.87 36,863 2 635.19 24,074
6 Pond Route Post SCM02 Pond 0.185 17.87 19,512 4 644.31 13,069
7 NRCS Runoff Pre SCM03 4.471 11.97 9,260
8 NRCS Runoff Post SCM03 9.532 11.93 19,247 ----
9 Pond Route Post SCM03 Pond 0.152 18.30 18,921 8 637.03 13,426
3

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Pre SCM01 Hyd. No. 1
Hydrograph Type = NRCS Runoff Peak Flow = 8.618 cfs
Storm Frequency = 1-yr Time to Peak = 11.97 hrs
Time Interval = 2 min Runoff Volume = 17,847 cuft
Drainage Area = 12.47 ac Curve Number = 79*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 1.82 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
12.47 79 Wood
12.47 79 Weighted CN Method Employed
Qp = 8.62 cfs
9
8
7
6-
5
U,
4—
V -
a
4_
3
2—
0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
4

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM01 Hyd. No. 2
Hydrograph Type = NRCS Runoff Peak Flow = 18.51 cfs
Storm Frequency = 1-yr Time to Peak = 11.93 hrs
Time Interval = 2 min Runoff Volume = 37,375 cuft
Drainage Area = 12.47 ac Curve Number = 89*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 1.82 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
0.1 79 Wood
2.27 80 Grass
10.1 91 Gravel
12.47 89 Weighted CN Method Employed
Qp = 18.51 cfs
21-
20-
19-
18-
17-
16-
15-
14-
13-
12-
;11-
, _
c10-
9-
8-
7
6 -
5
4
3
2
1
0-- - '
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
5

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Pre SCM02 Hyd. No. 3
Hydrograph Type = NRCS Runoff Peak Flow = 5.860 cfs
Storm Frequency = 1-yr Time to Peak = 11.97 hrs
Time Interval = 2 min Runoff Volume = 12,137 cuft
Drainage Area = 8.48 ac Curve Number = 79
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 1.82 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
Qp = 5.86 cfs
6
5-
4-
3-
2
1—
0 1 1 1 F
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
6

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM02 Hyd. No. 4
Hydrograph Type = NRCS Runoff Peak Flow = 9.963 cfs
Storm Frequency = 1-yr Time to Peak = 11.97 hrs
Time Interval = 2 min Runoff Volume = 19,935 cuft
Drainage Area = 8.48 ac Curve Number = 85.51*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 1.82 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
2.0 79 Wood
2.05 80 Grass
4.43 91 Gravel
8.48 86 Weighted CN Method Employed
Qp = 9.96 cfs
11
10
9_ . .
8
7
6_ .
U,
0
5—
I
3
1
0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
7

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM01 Pond Hyd. No. 5
Hydrograph Type = Pond Route Peak Flow = 0.405 cfs
Storm Frequency = 1-yr Time to Peak = 15.87 hrs
Time Interval = 2 min Hydrograph Volume = 36,863 cuft
Inflow Hydrograph = 2 - SCM01 Max. Elevation = 635.19 ft
Pond Name = SCM01 Max. Storage = 24,074 cuft
Routing Option = Wet Pond Wet Pond Elevation = 634.00 ft
Pond Routing by Storage Indication Method Center of mass detention time= 13.45 hrs
Qp = 0.40 cfs
21-
20-_
19-
18-
17_
16-
15-
14-
13-
12-
11-
0'10_
9-
8- -
7-
6-
5
4 . . .
3-
2
1
0— i 1 1� i i i l ! I I I
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time(hrs)
—SCM01 —SCM01 Pond
8

Pond Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
SCM01 Stage-Storage
User Defined Contours Stage/Storage Table
Description Input Stage Elevation Contour Area Incr.Storage Total Storage
(ft) (ft) (sqft) (cuft) (cuft)
Bottom Elevation,ft 634.00
0.00 634.00 16,496 0.000 0.000
Voids(%) 100.00 0.50 634.50 18,158 8,664 8,664
Volume Calc None 5.00 639.00 26,337 100,114 108,777
AIM
Stage-Storage
639 i -5
638- -4
637- -3
y
LJ
636- I -2
•
635— -1
634 I I i I i I I i I 0
0 10000 20000 30000 40000 50000 60000 70000 80000 90000 100000 110000
Total Storage(cuft)
—1-yr —2-yr —10-yr —25-yr —50-yr —100-yr —Contours
9

Pond Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
SCM01 Stage-Discharge
Orifice
Culvert/Orifices Culvert Orifice Plate
1 (m) 2 3
Rise, in 24 4 Orifice Dia, in
Span, in 24 4 No. Orifices
No. Barrels 1 1 Invert Elevation,ft
Invert Elevation,ft 634.00 634.00 Height,ft
Orifice Coefficient, Co 0.60 0.60 Orifice Coefficient, Co
Length,ft 117
Barrel Slope, % 1
N-Value, n 0.013
Weir
Weirs Riser Ancillary
1 (m) 2(i) 3
Shape/Type Box Rectangular Broad Crested Exfiltration, in/hr
Crest Elevation,ft 637 635.85 637.5
Crest Length,ft 16 4 20
Angle, deg 14(4:1)
Weir Coefficient, Cw 3.3 3.3 3.3
m-Flows through Culvert,i=Independent
Stage-Discharge
639- __5
638- — -4
J
637- -3
y h
�i DJ
la
a)
636 -2
635 1
634 1 i 1 I r 1 1 1 i 1 1 11 I 1 T 1 I 1 1 1 1 1 1 1 1 II ' 0
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190
Discharge(cfs)
—Top of Pond —1-yr —2-yr —10-yr —25-yr —50-yr —100-yr - Pond Outflow
10

Pond Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
SCM01 Stage-Storage-Discharge Summary
Stage Elev. Storage Culvert Orifices,cfs Riser Weirs,cfs Pf Riser Exfil User Total
(ft) (ft) (cuft) (cfs) 2 3 (cfs) 12 3 (cfs) (cfs) (cfs) (cfs)
10.00 634.00 0.000 0.000 0.000 0.000 0.000 0.000 0.000
0.50 634.50 8,664 0.234 ic 0.234 0.000 0.000 0.000 0.234
5.00 639.00 108,777 30.01 oc 0.000 0.000 0.000 150.3 180.4
Suffix key:ic=inlet control,oc=outlet control,s=submerged weir 11

Pond Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
SCMO1 Extended Detention
Stage(ft)
N — O i N
IO
"c'
\\\\\\\:
U) U)
CCD5
U
M
N k0
N
O w
N V
M
OO O
O
• II
• 0'
2
L
O N
Lfl
co
a-�
LI1
� N
rn
rn
N !I
i O a
01 co l0 V1
r» M rn m m m I
'.o '.o (�})n913 '.o '.o io
12

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM02 Pond Hyd. No. 6
Hydrograph Type = Pond Route Peak Flow = 0.185 cfs
Storm Frequency = 1-yr Time to Peak = 17.87 hrs
Time Interval = 2 min Hydrograph Volume = 19,512 cuft
Inflow Hydrograph = 4 - SCM02 Max. Elevation = 644.31 ft
Pond Name = SCM02 Max. Storage = 13,069 cuft
Routing Option = Wet Pond Wet Pond Elevation = 643.50 ft
Pond Routing by Storage Indication Method Center of mass detention time= 15.77 hrs
Qp = 0.19 cfs
11-
10- -
9-
8- -
7- -
6-
a
5-
4-
3
2-
I
1
0-
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time(hrs)
—SCM02—SCM02 Pond
13

Pond Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
SCM02 Stage-Storage
User Defined Contours Stage/Storage Table
Description Input Stage Elevation Contour Area Incr.Storage Total Storage
(ft) (ft) (sqft) (cuft) (cuft)
Bottom Elevation,ft 643.50
0.00 643.50 13,446 0.000 0.000
Voids(%) 100.00 0.50 644.00 15,259 7,176 7,176
Volume Calc None 4.50 648.00 23,078 76,674 83,850
I
7111_ 111 ==
Stage-Storage
648
-4
647
- - -3
646
y� h
4-
> -2 ro
a)
645- - ..
- •1
644
0
643 I iI I
0 10000 20000 30000 40000 50000 60000 70000 80000
Total Storage(cult)
—1-yr —2-yr —10-yr —25-yr —50-yr —100-yr —Contours
14

Pond Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
SCM02 Stage-Discharge
Orifice
Culvert/Orifices Culvert Orifice Plate
1 (m) 2 3
Rise, in 18 3 Orifice Dia, in
Span, in 18 3 No. Orifices
No. Barrels 1 1 Invert Elevation,ft
Invert Elevation,ft 643.50 643.50 Height,ft
Orifice Coefficient, Co 0.60 0.60 Orifice Coefficient, Co
Length,ft 90
Barrel Slope, % .6
N-Value, n 0.013
Weir
Weirs Riser Ancillary
1 (m) 2(i) 3
Shape/Type Box Rectangular Broad Crested Exfiltration, in/hr
Crest Elevation,ft 646 644.55 646.5
Crest Length,ft 16 2 10
Angle, deg 14(4:1)
AIL
Weir Coefficient, Cw 3.3 3.3 3.3
m-Flows through Culvert,i=Independent
Stage-Discharge
648-
- - -4
647-
- -3
646- v
to
> CD
v
w -2
645
-1
644
i 1 . I IIIII II I I 0
0 10 20 30 40 50 60 70 80 90 100 110
Discharge(cfs)
—Top of Pond —1-yr —2-yr —10-yr —25-yr —50-yr —100-yr Pond Outflow
15

Pond Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
SCM02 Stage-Storage-Discharge Summary
Stage Elev. Storage Culvert Orifices,cfs Riser Weirs,cfs Pf Riser Exfil User Total
(ft) (ft) (cuft) (cfs) 1 2 3 (cfs) 1 2 3 (cfs) (cfs) (cfs) (cfs)
0.00 643.50 0.000 0.000 0.000 0.000 0.000 0.000 0.000
0.50 644.00 7,176 0.138 ic 0.138 0.000 0.000 0.000 0.138
4.50 648.00 83,850 15.09 oc 0.000 0.000 0.000 89.72 104.8
Suffix key:ic=inlet control,oc=outlet control,s=submerged weir 16

Pond Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
SCM02 Extended Detention
Stage(ft)
N 0
Q) co I--
- to
ui
_.1-
N
Fr))
co
l4
Cr
_.
N
O
✓
-m
rn
_to
m w
N E
E rn ~
m
_ c
r _N ,
m 17, p
N O >
m N N
Q E 01
co 1 ~ (13
C I
N .�
O N o
2
U -�
N •
lfl
N
N
V
ko
N
U,
co u
O
O
ko O
II
✓ C!
• X
ra
N 2
i
O
LU
(Ni
V1
co
_ a--�
-ko 7
u
NI
`- o
LU
-N II
>
I . I . r 1 o CY
CY co N l0 kr) m
lfl ko lfl ko lfl Lc) I
(�1)^al3
17

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Pre SCM03 Hyd. No. 7
Hydrograph Type = NRCS Runoff Peak Flow = 4.471 cfs
Storm Frequency = 1-yr Time to Peak = 11.97 hrs
Time Interval = 2 min Runoff Volume = 9,260 cuft
Drainage Area = 6.47 ac Curve Number = 79*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 1.82 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
6.47 79 Woods
6.47 79 Weighted CN Method Employed
Qp = 4.47 cfs
5— F
4-
3
U,
4—
V -
a
2 •
1-
0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
18

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM03 Hyd. No. 8
Hydrograph Type = NRCS Runoff Peak Flow = 9.532 cfs
Storm Frequency = 1-yr Time to Peak = 11.93 hrs
Time Interval = 2 min Runoff Volume = 19,247 cuft
Drainage Area = 6.47 ac Curve Number = 88.89*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 1.82 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
1.24 80 Grass
5.23 91 Gravel
6.47 89 Weighted CN Method Employed
Qp = 9.53 cfs
10
9,'
8— • . .
7
6
5_ .
4=
3
2—
0 '
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
19

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM03 Pond Hyd. No. 9
Hydrograph Type = Pond Route Peak Flow = 0.152 cfs
Storm Frequency = 1-yr Time to Peak = 18.30 hrs
Time Interval = 2 min Hydrograph Volume = 18,921 cuft
Inflow Hydrograph = 8 - SCM03 Max. Elevation = 637.03 ft
Pond Name = SCM03 Max. Storage = 13,426 cuft
Routing Option = Wet Pond Wet Pond Elevation = 636.00 ft
Pond Routing by Storage Indication Method Center of mass detention time= 18.73 hrs
Qp = 0.15 cfs
10-
9_
8- I
7 I
6
5-
a
4-
3
2
1-
0 I I I ; ; I I ; I 1 1 I I I I I I
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time(hrs)
—SCM03—SCM03 Pond
20

Pond Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
SCM03 Stage-Storage
User Defined Contours Stage/Storage Table
Description Input Stage Elevation Contour Area Incr.Storage Total Storage
(ft) (ft) (sqft) (cuft) (cuft)
Bottom Elevation,ft 636.00
0.00 636.00 10,436 0.000 0.000
Voids(%) 100.00 0.50 636.50 11,801 5,559 5,559
Volume Calc None 4.50 640.50 17,829 59,260 64,819
i i
iiimilogi
Stage-Storage
641- -5
640- -4
639- -3
h
-Z.
La
a)
a)
638- • -2
637 — - -1
636 I 0
0 10000 20000 30000 40000 50000 60000
Total Storage(cuft)
—1-yr —2-yr —10-yr —25-yr —50-yr —100-yr —Contours
21

Pond Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
SCM03 Stage-Discharge
Orifice
Culvert/Orifices Culvert Orifice Plate
1 (m) 2 3
Rise, in 18 2.5 Orifice Dia, in
Span, in 18 2.5 No. Orifices
No. Barrels 1 1 Invert Elevation,ft
Invert Elevation,ft 636.00 636.00 Height,ft
Orifice Coefficient, Co 0.60 0.60 Orifice Coefficient, Co
Length,ft 73
Barrel Slope, % 1.57
N-Value, n 0.013
Weir
Weirs Riser Ancillary
1 (m) 2(i) 3
Shape/Type Box Rectangular Broad Crested Exfiltration, in/hr
Crest Elevation,ft 638.25 637.5 639
Crest Length,ft 16 3 15
Angle, deg 14(4:1)
Weir Coefficient, Cw 3.3 3.3 3.3
m-Flows through Culvert,i=Independent
Stage-Discharge
640- -4
639— -3
•
CD
v
w638 -2
637 -1
636—i
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140
Discharge(cfs)
—Top of Pond —1-yr —2-yr —10-yr —25-yr —50-yr —100-yr Pond Outflow
22

Pond Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
SCM03 Stage-Storage-Discharge Summary
Stage Elev. Storage Culvert Orifices,cfs Riser Weirs,cfs Pf Riser Exfil User Total
(ft) (ft) (cuft) (cfs) 2 3 (cfs) 12 3 (cfs) (cfs) (cfs) (cfs)
10.00 636.00 0.000 0.000 0.000 0.000 0.000 0.000 0.000
0.50 636.50 5,559 0.099 ic 0.099 0.000 0.000 0.000 0.099
4.50 640.50 64,819 16.48 ic 0.000 0.000 0.000 120.0 136.5
Suffix key:ic=inlet control,oc=outlet control,s=submerged weir 23

Pond Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
SCM03 Extended Detention
Stage(ft)
L!1 M N •
O
mmw
lD
O
co
✓1
to
V1
N
O
✓1
co
N
O
▪ N
a co !_
E M
VI
iD C
M �
i 0
C M ,
L N
cs
H +�+
C
co I
E
Ln
N
to
N �1
N lJ
• U
N
co
� O
II
i0
2
N
O Uri
O
co
to u
N
N
N
O Lco
IDV M M m m I
co LSD(}})na13
24

Design Storm Report Custom Storm filename:
Hydrology Studio v 3.0.0.32 03-20-2024
Storm Distribution: NRCS/SCS - Type II, 24-hr
Storm Total Rainfall Volume(in)
Duration
4 1-yr 2-yr 3-yr 5-yr 10-yr 25-yr 50-yr 100-yr
24 hrs 1.82 2.28 0.00 2.85 3.31 3.94 4.43 4.94
Incremental Rainfall Distribution, 1-yr
Time Precip Time Precip Time Precip Time Precip Time Precip
(hrs) (in) (hrs) (in) (hrs) (in) (hrs) (in) (hrs) (in)
10.90 0.004085 11.27 0.005824 11.63 0.024040 12.00 0.027350 12.37 0.007353
10.93 0.004166 11.30 0.006018 11.67 0.028829 12.03 0.012167 12.40 0.006892
10.97 0.004247 11.33 0.006212 11.70 0.033618 12.07 0.011503 12.43 0.006431
11.00 0.004328 11.37 0.006406 11.73 0.038406 12.10 0.011041 12.47 0.005970
11.03 0.004465 11.40 0.006601 11.77 0.044084 12.13 0.010580 12.50 0.005509
11.07 0.004659 11.43 0.006795 11.80 0.056512 12.17 0.010119 12.53 0.005226
11.10 0.004853 11.47 0.006989 11.83 0.069831 12.20 0.009658 12.57 0.005120
11.13 0.005047 11.50 0.007183 11.87 0.083151 12.23 0.009197 12.60 0.005015
11.17 0.005242 11.53 0.009688 11.90 0.096471 12.27 0.008736 12.63 0.004910
11.20 0.005436 11.57 0.014463 11.93 0.088038 12.30 0.008275 12.67 0.004805
11.23 0.005630 11.60 0.019252 11.97 0.057663 12.33 0.007814 12.70 0.004700
1.8- -.1.8
1.7_ I :1.7
1.6= -.1.6
1.5= -.1.5
1.4- :1.4
1.3 -.1.3
1.2= -.1.2
1.1- -1.1
c -
.-7, 1- -1 rs
•Q 0.9- -0.9
I' -
a 0.8- -0.8
0.7= -0.7
0.6- :0.6
0.57 :0.5
0.47 :0.4
0.3- :0.3
0.2- :0.2
0.1 _ - -0.1
0 1 i I I ` i I I I I 0
0 2 4 6 8 10 12 14 16 18 20 22 24
Time(hrs)
25

Hydrograph 2-yr Summary Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Hyd. Hydrograph Hydrograph Peak Time to Hydrograph Inflow Maximum Maximum
No. Type Name Flow Peak Volume Hyd(s) Elevation Storage
(cfs) (hrs) (cuft) (ft) (cuft)
1 NRCS Runoff Pre SCM01 14.63 11.97 29,438 ----
2 NRCS Runoff Post SCM01 26.45 11.93 53,648 ----
3 NRCS Runoff Pre SCM02 9.952 11.97 20,018 ----
4 NRCS Runoff Post SCM02 14.85 11.97 29,908 ----
5 Pond Route Post SCM01 Pond 0.505 16.20 53,029 2 635.74 36,174
6 Pond Route Post SCM02 Pond 0.517 13.97 29,440 4 644.55 17,734
7 NRCS Runoff Pre SCM03 7.593 11.97 15,274
8 NRCS Runoff Post SCM03 13.65 11.93 27,665 ----
9 Pond Route Post SCM03 Pond 0.341 15.10 27,254 8 637.37 18,519
26

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Pre SCM01 Hyd. No. 1
Hydrograph Type = NRCS Runoff Peak Flow = 14.63 cfs
Storm Frequency = 2-yr Time to Peak = 11.97 hrs
Time Interval = 2 min Runoff Volume = 29,438 cuft
Drainage Area = 12.47 ac Curve Number = 79*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 2.28 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
12.47 79 Wood
12.47 79 Weighted CN Method Employed
Qp = 14.63 cfs
16
15
14—
13—
12 .
11 •
10-
9—
-
ivy 8
_
7
6— -
5—
4-
3 .
1-
0- i i i l i i l i r r , i , i I l i F
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
27

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM01 Hyd. No. 2
Hydrograph Type = NRCS Runoff Peak Flow = 26.45 cfs
Storm Frequency = 2-yr Time to Peak = 11.93 hrs
Time Interval = 2 min Runoff Volume = 53,648 cuft
Drainage Area = 12.47 ac Curve Number = 89*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 2.28 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
0.1 79 Wood
2.27 80 Grass
10.1 91 Gravel
12.47 89 Weighted CN Method Employed
Qp = 26.45 cfs
30-
29-
28—
27—
26—
25-
24— — —
23—
22—
21-
20—
19—
18-
17-
014-
13-
12-
11-
10-
9
8�
7-
0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
28

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Pre SCM02 Hyd. No. 3
Hydrograph Type = NRCS Runoff Peak Flow = 9.952 cfs
Storm Frequency = 2-yr Time to Peak = 11.97 hrs
Time Interval = 2 min Runoff Volume = 20,018 cuft
Drainage Area = 8.48 ac Curve Number = 79
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 2.28 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
Qp = 9.95 cfs
11
10 .
9
8
7-
6
a
5 '
4-
3-
2
1
0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
29

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM02 Hyd. No. 4
Hydrograph Type = NRCS Runoff Peak Flow = 14.85 cfs
Storm Frequency = 2-yr Time to Peak = 11.97 hrs
Time Interval = 2 min Runoff Volume = 29,908 cuft
Drainage Area = 8.48 ac Curve Number = 85.51*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 2.28 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
2.0 79 Wood
2.05 80 Grass
4.43 91 Gravel
8.48 86 Weighted CN Method Employed
Qp = 14.85 cfs
17-
16-
15-
14-
13-
12-
11- •
10-
9-
_
a 8-
7-
6
5
4-
3
2 . •
1 - L— '
Or - I I I .
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
30

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM01 Pond Hyd. No. 5
Hydrograph Type = Pond Route Peak Flow = 0.505 cfs
Storm Frequency = 2-yr Time to Peak = 16.20 hrs
Time Interval = 2 min Hydrograph Volume = 53,029 cuft
Inflow Hydrograph = 2 - SCM01 Max. Elevation = 635.74 ft
Pond Name = SCM01 Max. Storage = 36,174 cuft
Routing Option = Wet Pond Wet Pond Elevation = 634.00 ft
Pond Routing by Storage Indication Method Center of mass detention time= 15.73 hrs
Qp = 0.51 cfs
30-
29-
28-
27-
26- I
25-
24-
23-
22-
21-
20-
19-
18-
17-
.-.16-
•?-15-
014-
13-
12-
11-
10-
9-
8-
7-
6-
5 _ '
4
3-
2'
1-
0 i I TT r
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time(hrs)
—SCM01 —SCM01 Pond
31

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM02 Pond Hyd. No. 6
Hydrograph Type = Pond Route Peak Flow = 0.517 cfs
Storm Frequency = 2-yr Time to Peak = 13.97 hrs
Time Interval = 2 min Hydrograph Volume = 29,440 cuft
Inflow Hydrograph = 4 - SCM02 Max. Elevation = 644.55 ft
Pond Name = SCM02 Max. Storage = 17,734 cuft
Routing Option = Wet Pond Wet Pond Elevation = 643.50 ft
Pond Routing by Storage Indication Method Center of mass detention time= 13.14 hrs
Qp = 0.52 cfs
17-
16 •
-
15-
14-
13-
12-
I
11-
10-
9-
8-
7-
6-
5-
4-
3-_-
2 •
1- .
0 i i I I I I
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time(hrs)
—SCM02—SCM02 Pond
32

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Pre SCM03 Hyd. No. 7
Hydrograph Type = NRCS Runoff Peak Flow = 7.593 cfs
Storm Frequency = 2-yr Time to Peak = 11.97 hrs
Time Interval = 2 min Runoff Volume = 15,274 cuft
Drainage Area = 6.47 ac Curve Number = 79*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 2.28 in ' Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
6.47 79 Woods
6.47 79 Weighted CN Method Employed
Qp = 7.59 cfs
8- _ .
7
6 •
5—
4
a
3
2
1_ •
0 vi [ II v ) 777
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
33

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM03 Hyd. No. 8
Hydrograph Type = NRCS Runoff Peak Flow = 13.65 cfs
Storm Frequency = 2-yr Time to Peak = 11.93 hrs
Time Interval = 2 min Runoff Volume = 27,665 cuft
Drainage Area = 6.47 ac Curve Number = 88.89*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 2.28 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
1.24 80 Grass
5.23 91 Gravel
6.47 89 Weighted CN Method Employed
Qp = 13.65 cfs
is-
14-
13— . . . . . . . . . . . .
12— . . . . . . . . . . . . .
11—
10—
9—
- 8
7 .
6-
5
4-
3—
.
1 .
Or — II I Ir I III ! 1-1 I •
I I
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
34

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM03 Pond Hyd. No. 9
Hydrograph Type = Pond Route Peak Flow = 0.341 cfs
Storm Frequency = 2-yr Time to Peak = 15.10 hrs
Time Interval = 2 min Hydrograph Volume = 27,254 cuft
Inflow Hydrograph = 8 - SCM03 Max. Elevation = 637.37 ft
Pond Name = SCM03 Max. Storage = 18,519 cuft
Routing Option = Wet Pond Wet Pond Elevation = 636.00 ft
Pond Routing by Storage Indication Method Center of mass detention time= 19.20 hrs
Qp = 0.34 cfs
15
14
13
12
11-
10- . •
9-
8-
7-
61
5- .
4
3
2
1-
0- i 1 I I 1 i I I I I I
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time(hrs)
—SCM03—SCM03 Pond
35

Design Storm Report Custom Storm filename:
Hydrology Studio v 3.0.0.32 03-20-2024
Storm Distribution: NRCS/SCS - Type II, 24-hr
Storm Total Rainfall Volume(in)
Duration
1-yr 4 2-yr 3-yr 5-yr 10-yr 25-yr 50-yr 100-yr
24 hrs 1.82 2.28 0.00 2.85 3.31 3.94 4.43 4.94
Incremental Rainfall Distribution,2-yr
Time Precip Time Precip Time Precip Time Precip Time Precip
(hrs) (in) (hrs) (in) (hrs) (in) (hrs) (in) (hrs) (in)
10.90 0.005117 11.27 0.007296 11.63 0.030116 12.00 0.034263 12.37 0.009211
10.93 0.005219 11.30 0.007539 11.67 0.036115 12.03 0.015242 12.40 0.008634
10.97 0.005320 11.33 0.007782 11.70 0.042114 12.07 0.014410 12.43 0.008056
11.00 0.005421 11.37 0.008026 11.73 0.048113 12.10 0.013832 12.47 0.007478
11.03 0.005593 11.40 0.008269 11.77 0.055226 12.13 0.013254 12.50 0.006901
11.07 0.005837 11.43 0.008512 11.80 0.070795 12.17 0.012677 12.53 0.006547
11.10 0.006080 11.47 0.008755 11.83 0.087481 12.20 0.012099 12.57 0.006414
11.13 0.006323 11.50 0.008998 11.87 0.104167 12.23 0.011522 12.60 0.006283
11.17 0.006566 11.53 0.012137 11.90 0.120853 12.27 0.010944 12.63 0.006151
11.20 0.006810 11.57 0.018118 11.93 0.110290 12.30 0.010366 12.67 0.006019
11.23 0.007053 11.60 0.024117 11.97 0.072238 12.33 0.009789 12.70 0.005887
2.2- ' 1 2.2
2 2
1.8 -1.8
1.6 -1.6
1.4- 1.4
a 1.2 1.2 n,
75
a 1 1
0.8 0.8
0.6 0.6
0.4- -0.4
0.2- 0.2
0 2 4 6 8 10 12 14 16 18 20 22 24
Time(hrs)
36

Hydrograph 10-yr Summary Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Hyd. Hydrograph Hydrograph Peak Time to Hydrograph Inflow Maximum Maximum
No. Type Name Flow Peak Volume Hyd(s) Elevation Storage
(cfs) (hrs) (cuft) (ft) (cuft)
1 NRCS Runoff Pre SCM01 30.01 11.97 60,255 ----
2 NRCS Runoff Post SCM01 44.82 11.93 92,606 ----
3 NRCS Runoff Pre SCM02 20.41 11.97 40,975 ----
4 NRCS Runoff Post SCM02 26.86 11.93 54,600 ----
5 Pond Route Post SCM01 Pond 4.831 12.30 91,937 2 636.32 49,193
6 Pond Route Post SCM02 Pond 2.809 12.37 54,118 4 645.07 27,667
7 NRCS Runoff Pre SCM03 15.57 11.97 31,263 ----
8 NRCS Runoff Post SCM03 23.17 11.93 47,837 ----
9 Pond Route Post SCM03 Pond 2.478 12.33 47,413 8 637.85 25,594
37

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Pre SCM01 Hyd. No. 1
Hydrograph Type = NRCS Runoff Peak Flow = 30.01 cfs
Storm Frequency = 10-yr Time to Peak = 11.97 hrs
Time Interval = 2 min Runoff Volume = 60,255 cuft
Drainage Area = 12.47 ac • Curve Number = 79*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 3.31 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
12.47 79 Wood
12.47 79 Weighted CN Method Employed
Qp = 30.01 cfs
34—
32—
I
30—
28—
26 . •
24-
22—
20—
18—
Ci 16
14
12 .
10 . •
8
6-
4—
2-
0— I 1 I 1 I I I I 1 I 1 1 1 1 I r 1 i 1 i r 1 I 1 1-1 I I
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
38

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM01 Hyd. No. 2
Hydrograph Type = NRCS Runoff Peak Flow = 44.82 cfs
Storm Frequency = 10-yr Time to Peak = 11.93 hrs
Time Interval = 2 min Runoff Volume = 92,606 cuft
Drainage Area = 12.47 ac Curve Number = 89*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 3.31 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
0.1 79 Wood
2.27 80 Grass
10.1 91 Gravel
12.47 89 Weighted CN Method Employed
Qp = 44.82 cfs
50- I
I
48-
46-
44-
42-
40-
38-
36
34-
32- .
30-
28-
26 -
a 24
22
20-
18-
16-
14- . •
12-
10-
8-
6-
4-
2-
0- i I i I i i i I . ' I i II 1 i l l ! I i I , i 1 1 1 1 I
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
39

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Pre SCM02 Hyd. No. 3
Hydrograph Type = NRCS Runoff Peak Flow = 20.41 cfs
Storm Frequency = 10-yr Time to Peak = 11.97 hrs
Time Interval = 2 min Runoff Volume = 40,975 cuft
Drainage Area = 8.48 ac Curve Number = 79
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 3.31 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
Qp = 20.41 cfs
23—
22—
21-
20—
19-
18-
17-
16-
15-
14-
13-
12-
011-
10-
9-
8-
7-
6-
5-
4—
.
1
0— i I . l i l 1 I I I I i 1 1 . 1 1 . 1 1 1 1 1 I I
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
40

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM02 Hyd. No. 4
Hydrograph Type = NRCS Runoff Peak Flow = 26.86 cfs
Storm Frequency = 10-yr Time to Peak = 11.93 hrs
Time Interval = 2 min Runoff Volume = 54,600 cuft
Drainage Area = 8.48 ac Curve Number = 85.51*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 3.31 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
2.0 79 Wood
2.05 80 Grass
4.43 91 Gravel
8.48 86 Weighted CN Method Employed
Qp = 26.86 cfs
30-
29-
28—
27—
26— -
25-
24— — —
23—
22—
21_
20—
19-
18-
17-
15-
014-
13-
12-
11-
10-
9
8'
7-
6-
5
1 _
0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
41

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM01 Pond Hyd. No. 5
Hydrograph Type = Pond Route Peak Flow = 4.831 cfs
Storm Frequency = 10-yr Time to Peak = 12.30 hrs
Time Interval = 2 min Hydrograph Volume = 91,937 cuft
Inflow Hydrograph = 2 - SCM01 Max. Elevation = 636.32 ft
Pond Name = SCM01 Max. Storage = 49,193 cuft
Routing Option = Wet Pond Wet Pond Elevation = 634.00 ft
Pond Routing by Storage Indication Method Center of mass detention time= 10.60 hrs
Qp = 4.83 cfs
50_
48
46-
44-
42-
40 •
•
-
38-
36
34 •
•
-
32-
30-
28-
26—
C! 24-
22-
20
18-
16
14- . •
12-
10-
8
6-
4-
2
irr
0 5 10 15 20 25 30 35 40 45 50 55 60 65
Time(hrs)
—SCM01 —SCM01 Pond
42

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM02 Pond Hyd. No. 6
Hydrograph Type = Pond Route Peak Flow = 2.809 cfs
Storm Frequency = 10-yr Time to Peak = 12.37 hrs
Time Interval = 2 min Hydrograph Volume = 54,118 cuft
Inflow Hydrograph = 4 - SCM02 Max. Elevation = 645.07 ft
Pond Name = SCM02 Max. Storage = 27,667 cuft
Routing Option = Wet Pond Wet Pond Elevation = 643.50 ft
Pond Routing by Storage Indication Method Center of mass detention time=7.77 hrs
Qp = 2.81 cfs
30=
29-
28-
27-
26-
25-
24-
23-
22-
21-
20=
19-
18_
17-
.-.16-
,?-15-
014
13-
12-
11-
10-
9-
8-
7-
6-
5-
4-
3-
2-
1-
0- i i i I ill f
0 5 10 15 20 25 30 35 40 45 50 55 60 65
Time(hrs)
—SCM02—SCM02 Pond
43

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Pre SCM03 Hyd. No. 7
Hydrograph Type = NRCS Runoff Peak Flow = 15.57 cfs
Storm Frequency = 10-yr Time to Peak = 11.97 hrs
Time Interval = 2 min Runoff Volume = 31,263 cuft
Drainage Area = 6.47 ac Curve Number = 79*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 3.31 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
6.47 79 Woods
6.47 79 Weighted CN Method Employed
Qp = 15.57 cfs
17
16
15-
14—
13 .
12-
11-
10—
N 9_
Ci 8
7
6 .
5 .
4
3-
2-
1-
6
0 --
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
44

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM03 Hyd. No. 8
Hydrograph Type = NRCS Runoff Peak Flow = 23.17 cfs
Storm Frequency = 10-yr Time to Peak = 11.93 hrs
Time Interval = 2 min Runoff Volume = 47,837 cuft
Drainage Area = 6.47 ac Curve Number = 88.89*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 3.31 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
1.24 80 Grass
5.23 91 Gravel
6.47 89 Weighted CN Method Employed
Qp = 23.17 cfs
26
24
22—
20
18
16—
_14—
U,
012 1
10 I I
8 •
6-
4
2
0— I I I i I h r I I i 'I I t
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
45

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM03 Pond Hyd. No. 9
Hydrograph Type = Pond Route Peak Flow = 2.478 cfs
Storm Frequency = 10-yr Time to Peak = 12.33 hrs
Time Interval = 2 min Hydrograph Volume = 47,413 cuft
Inflow Hydrograph = 8 - SCM03 Max. Elevation = 637.85 ft
Pond Name = SCM03 Max. Storage = 25,594 cuft
Routing Option = Wet Pond Wet Pond Elevation = 636.00 ft
Pond Routing by Storage Indication Method Center of mass detention time=11.52 hrs
Qp = 2.48 cfs
26-
24
22-
20- -
18-
16-
14- -
�12-
10-
8-
4-
2 •
4
0- i I 1 i
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75
Time(hrs)
—SCM03—SCM03 Pond
46

Design Storm Report Custom Storm filename:
Hydrology Studio v 3.0.0.32 03-20-2024
Storm Distribution: NRCS/SCS - Type II, 24-hr
Storm Total Rainfall Volume(in)
Duration
1-yr 2-yr 3-yr 5-yr 4 10-yr 25-yr 50-yr 100-yr
24 hrs 1.82 2.28 0.00 2.85 3.31 3.94 4.43 4.94
Incremental Rainfall Distribution, 10-yr
Time Precip Time Precip Time Precip Time Precip Time Precip
(hrs) (in) (hrs) (in) (hrs) (in) (hrs) (in) (hrs) (in)
10.90 0.007429 11.27 0.010592 11.63 0.043721 12.00 0.049742 12.37 0.013372
10.93 0.007576 11.30 0.010945 11.67 0.052431 12.03 0.022128 12.40 0.012534
10.97 0.007723 11.33 0.011298 11.70 0.061139 12.07 0.020919 12.43 0.011695
11.00 0.007870 11.37 0.011651 11.73 0.069849 12.10 0.020081 12.47 0.010857
11.03 0.008120 11.40 0.012004 11.77 0.080174 12.13 0.019242 12.50 0.010018
11.07 0.008474 11.43 0.012357 11.80 0.102777 12.17 0.018404 12.53 0.009504
11.10 0.008827 11.47 0.012710 11.83 0.127001 12.20 0.017565 12.57 0.009312
11.13 0.009180 11.50 0.013063 11.87 0.151225 12.23 0.016727 12.60 0.009121
11.17 0.009533 11.53 0.017619 11.90 0.175450 12.27 0.015888 12.63 0.008930
11.20 0.009886 11.57 0.026304 11.93 0.160114 12.30 0.015049 12.67 0.008739
11.23 0.010239 11.60 0.035013 11.97 0.104872 12.33 0.014211 12.70 0.008547
4- -4
3- -3
- -10
`. 2.
•Q 2- -2 -E•
I'
a
1- I -1
0 i i 1 i 1 i 1 i 1 i 1 i 1 i 1 i I i 1 i 0
0 2 4 6 8 10 12 14 16 18 20 22 24
Time(hrs)
47

Hydrograph 25-yr Summary Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Hyd. Hydrograph Hydrograph Peak Time to Hydrograph Inflow Maximum Maximum
No. Type Name Flow Peak Volume Hyd(s) Elevation Storage
(cfs) (hrs) (cuft) (ft) (cuft)
1 NRCS Runoff Pre SCM01 40.24 11.93 81,262 ----
2 NRCS Runoff Post SCM01 56.16 11.93 117,414 ----
3 NRCS Runoff Pre SCM02 27.37 11.93 55,261 ----
4 NRCS Runoff Post SCM02 34.49 11.93 70,668 ----
5 Pond Route Post SCM01 Pond 12.12 12.07 116,734 2 636.78 59,195
6 Pond Route Post SCM02 Pond 5.228 12.13 70,179 4 645.45 34,858
7 NRCS Runoff Pre SCM03 20.88 11.93 42,163
8 NRCS Runoff Post SCM03 29.05 11.93 60,691 ----
9 Pond Route Post SCM03 Pond 6.415 12.07 60,262 8 638.21 30,830
48

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Pre SCM01 Hyd. No. 1
Hydrograph Type = NRCS Runoff Peak Flow = 40.24 cfs
Storm Frequency = 25-yr Time to Peak = 11.93 hrs
Time Interval = 2 min Runoff Volume = 81,262 cuft
Drainage Area = 12.47 ac • Curve Number = 79*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 3.94 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
12.47 79 Wood
12.47 79 Weighted CN Method Employed
Qp = 40.24 cfs
46-
44—
42_
40 • .
38 .
36-
34—
32—
30—
28—
26 .
24 .
_
C! 22
20
18-
16-
14
12-
10— .
8-
6-
4—
ILJA
0-.- L 11 I 1 I 1 I II I I I I 1 1 1 1 1
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
49

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM01 Hyd. No. 2
Hydrograph Type = NRCS Runoff Peak Flow = 56.16 cfs
Storm Frequency = 25-yr Time to Peak = 11.93 hrs
Time Interval = 2 min Runoff Volume = 117,414 cuft
Drainage Area = 12.47 ac Curve Number = 89*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 3.94 in I Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
0.1 79 Wood
2.27 80 Grass
10.1 91 Gravel
12.47 89 Weighted CN Method Employed
Qp = 56.16 cfs
60-
55
50-
45
40 . •
35 .
U,
4—
V -
CY 30-
25
20-
15
10
5
0— I i l i l i l I l I r
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
50

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Pre SCM02 Hyd. No. 3
Hydrograph Type = NRCS Runoff Peak Flow = 27.37 cfs
Storm Frequency = 25-yr Time to Peak = 11.93 hrs
Time Interval = 2 min Runoff Volume = 55,261 cuft
Drainage Area = 8.48 ac Curve Number = 79
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 3.94 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
Qp = 27.37 cfs
31-
30-
29—
28—
27 -
26 .
25-
24-
23
22—
21—
20— .
19—
18—
17— • .
16-
-
15-
14 •
-
13-
12-
11 I
10-
9-
8 I
7— .
6—
5—
4— •
3
2
0— I I I I I I I I II
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
51

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM02 Hyd. No. 4
Hydrograph Type = NRCS Runoff Peak Flow = 34.49 cfs
Storm Frequency = 25-yr Time to Peak = 11.93 hrs
Time Interval = 2 min Runoff Volume = 70,668 cuft
Drainage Area = 8.48 ac Curve Number = 85.51*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 3.94 in I Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
2.0 79 Wood
2.05 80 Grass
4.43 91 Gravel
8.48 86 Weighted CN Method Employed
Qp = 34.49 cfs
38— I I
36-
34-
32-
30 • •
28
26-
24 I
22 .
20
18-
16-
14 -
12
10-
8-
6
4- -
2- • .
. , 1 , 1 I I r I
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
52

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM01 Pond Hyd. No. 5
Hydrograph Type = Pond Route Peak Flow = 12.12 cfs
Storm Frequency = 25-yr Time to Peak = 12.07 hrs
Time Interval = 2 min Hydrograph Volume = 116,734 cuft
Inflow Hydrograph = 2 - SCM01 Max. Elevation = 636.78 ft
Pond Name = SCM01 Max. Storage = 59,195 cuft
Routing Option = Wet Pond Wet Pond Elevation = 634.00 ft
Pond Routing by Storage Indication Method Center of mass detention time=8.35 hrs
Qp = 12.12 cfs
64
62_
60
58-
56
54
52 . •
50
48-
46-
44-
42-
40 .
38 . •
36 -
�, 34-
32-
0 30
28-
26 .
24-
22-
20-
18-
16-
14 . •
12 . •
10-
8
6-
4-
2
0
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56
Time(hrs)
—SCM01 —SCM01 Pond
53

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM02 Pond Hyd. No. 6
Hydrograph Type = Pond Route Peak Flow = 5.228 cfs
Storm Frequency = 25-yr Time to Peak = 12.13 hrs
Time Interval = 2 min Hydrograph Volume = 70,179 cuft
Inflow Hydrograph = 4 - SCM02 Max. Elevation = 645.45 ft
Pond Name = SCM02 Max. Storage = 34,858 cuft
Routing Option = Wet Pond Wet Pond Elevation = 643.50 ft
Pond Routing by Storage Indication Method Center of mass detention time=6.19 hrs
Qp = 5.23 cfs
38-
36-
34-
32- -
30-
28-
26-
24-
22-
r, 20
a
18
16-
14-
12-
10-
8 .
6-
4 •-
2-
0 5 10 15 20 25 30 35 40 45 50 55
Time(hrs)
—SCM02—SCM02 Pond
54

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Pre SCM03 Hyd. No. 7
Hydrograph Type = NRCS Runoff Peak Flow = 20.88 cfs
Storm Frequency = 25-yr Time to Peak = 11.93 hrs
Time Interval = 2 min Runoff Volume = 42,163 cuft
Drainage Area = 6.47 ac Curve Number = 79*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 3.94 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
6.47 79 Woods
6.47 79 Weighted CN Method Employed
Qp = 20.88 cfs
24
22 .
20
18 .
16
14 .
-
12—
10— —
I I
8 I I
6-
4-
21
0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
55

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM03 Hyd. No. 8
Hydrograph Type = NRCS Runoff Peak Flow = 29.05 cfs
Storm Frequency = 25-yr Time to Peak = 11.93 hrs
Time Interval = 2 min Runoff Volume = 60,691 cuft
Drainage Area = 6.47 ac Curve Number = 88.89*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 3.94 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
1.24 80 Grass
5.23 91 Gravel
6.47 89 Weighted CN Method Employed
Qp = 29.05 cfs
32-
30-
28-
26-
24
22-
20-
18 .
4
a 16-
14A
12
10
8 .
4-
2
0- I I I I I i I I I ' ll i l l l II II i i 1 I . t
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
56

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM03 Pond Hyd. No. 9
Hydrograph Type = Pond Route Peak Flow = 6.415 cfs
Storm Frequency = 25-yr Time to Peak = 12.07 hrs
Time Interval = 2 min Hydrograph Volume = 60,262 cuft
Inflow Hydrograph = 8 - SCM03 Max. Elevation = 638.21 ft
Pond Name = SCM03 Max. Storage = 30,830 cuft
Routing Option = Wet Pond Wet Pond Elevation = 636.00 ft
Pond Routing by Storage Indication Method Center of mass detention time=8.51 hrs
Qp = 6.42 cfs
33-
32-
31
30
29-
28-
27-
26
25-
_
24-
23
22-
21-
20 -
19-
18-
17-
0y 16_
15-
14-
13-
12
11
10-
9 -
8-
7-
6-
5-
4-
3-
2-
1-
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65
Time(hrs)
—SCM03—SCM03 Pond
57

Design Storm Report Custom Storm filename:
Hydrology Studio v 3.0.0.32 03-20-2024
Storm Distribution: NRCS/SCS - Type II, 24-hr
Storm Total Rainfall Volume(in)
Duration
1-yr 2-yr 3-yr 5-yr 10-yr 4 25-yr 50-yr 100-yr
24 hrs 1.82 2.28 0.00 2.85 3.31 3.94 4.43 4.94
Incremental Rainfall Distribution,25-yr
Time Precip Time Precip Time Precip Time Precip Time Precip
(hrs) (in) (hrs) (in) (hrs) (in) (hrs) (in) (hrs) (in)
10.90 0.008843 11.27 0.012608 11.63 0.052043 12.00 0.059209 12.37 0.015918
10.93 0.009018 11.30 0.013028 11.67 0.062410 12.03 0.026340 12.40 0.014920
10.97 0.009193 11.33 0.013449 11.70 0.072776 12.07 0.024901 12.43 0.013921
11.00 0.009368 11.37 0.013869 11.73 0.083143 12.10 0.023903 12.47 0.012923
11.03 0.009665 11.40 0.014289 11.77 0.095434 12.13 0.022904 12.50 0.011925
11.07 0.010086 11.43 0.014709 11.80 0.122339 12.17 0.021906 12.53 0.011313
11.10 0.010507 11.47 0.015130 11.83 0.151174 12.20 0.020908 12.57 0.011085
11.13 0.010927 11.50 0.015550 11.87 0.180009 12.23 0.019910 12.60 0.010857
11.17 0.011347 11.53 0.020973 11.90 0.208843 12.27 0.018912 12.63 0.010629
11.20 0.011767 11.57 0.031310 11.93 0.190589 12.30 0.017914 12.67 0.010401
11.23 0.012188 11.60 0.041677 11.97 0.124832 12.33 0.016916 12.70 0.010174
4- -4
3- /".....****** """*"." ---------------"--
3
- -10
.a2- -2 -E•
I'
a
1- -1
0 2 4 6 8 10 12 14 16 18 20 22 24
Time(hrs)
58

Hydrograph 50-yr Summary Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Hyd. Hydrograph Hydrograph Peak Time to Hydrograph Inflow Maximum Maximum
No. Type Name Flow Peak Volume Hyd(s) Elevation Storage
(cfs) (hrs) (cuft) (ft) (cuft)
1 NRCS Runoff Pre SCM01 48.63 11.93 98,362 ----
2 NRCS Runoff Post SCM01 64.98 11.93 137,019 ----
3 NRCS Runoff Pre SCM02 33.07 11.93 66,890 ----
4 NRCS Runoff Post SCM02 40.46 11.93 83,484 ----
5 Pond Route Post SCM01 Pond 18.80 12.07 136,337 2 637.13 67,178
6 Pond Route Post SCM02 Pond 7.115 12.10 82,991 4 645.76 40,977
7 NRCS Runoff Pre SCM03 25.23 11.93 51,035 ----
8 NRCS Runoff Post SCM03 33.63 11.93 70,852 ----
9 Pond Route Post SCM03 Pond 10.55 12.07 70,420 8 638.48 34,767
59

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Pre SCM01 Hyd. No. 1
Hydrograph Type = NRCS Runoff Peak Flow = 48.63 cfs
Storm Frequency = 50-yr Time to Peak = 11.93 hrs
Time Interval = 2 min Runoff Volume = 98,362 cuft
Drainage Area = 12.47 ac Curve Number = 79*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 4.43 in . Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
12.47 79 Wood
12.47 79 Weighted CN Method Employed
Qp = 48.63 cfs
54—
52—
50—
48 .
46
44—
42— .
40—
38—
36-
34—
32— • •
30-
-
28
C! 26-
24—
22-
20—
18--
16-
14A
12
10
8-
6— .
4—
0— 1 1 1 1 1 1 1 1 11 1 1 1 1 i I r 1 1 1 1 1 1 1 1 . 1 . 1
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
60

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM01 Hyd. No. 2
Hydrograph Type = NRCS Runoff Peak Flow = 64.98 cfs
Storm Frequency = 50-yr Time to Peak = 11.93 hrs
Time Interval = 2 min Runoff Volume = 137,019 cuft
Drainage Area = 12.47 ac Curve Number = 89*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 4.43 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
0.1 79 Wood
2.27 80 Grass
10.1 91 Gravel
12.47 89 Weighted CN Method Employed
Qp = 64.98 cfs
70 . •
65
60
55
50 . •
45—
40
V -
CY 35
30
25 . •
20-
15—
10_
5_
0— I I I r I I I I r
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
61

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Pre SCM02 Hyd. No. 3
Hydrograph Type = NRCS Runoff Peak Flow = 33.07 cfs
Storm Frequency = 50-yr Time to Peak = 11.93 hrs
Time Interval = 2 min Runoff Volume = 66,890 cuft
Drainage Area = 8.48 ac Curve Number = 79
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 4.43 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
Qp = 33.07 cfs
38
36-
34
32—
30—
28—
26_
24 •
22
20—
C1 18-
16-
14-
12
10
8-
4-
2-
0— I I III II I I 1 I 1 - I r
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
62

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM02 Hyd. No. 4
Hydrograph Type = NRCS Runoff Peak Flow = 40.46 cfs
Storm Frequency = 50-yr Time to Peak = 11.93 hrs
Time Interval = 2 min Runoff Volume = 83,484 cuft
Drainage Area = 8.48 ac Curve Number = 85.51*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 4.43 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
2.0 79 Wood
2.05 80 Grass
4.43 91 Gravel
8.48 86 Weighted CN Method Employed
Qp = 40.46 cfs
46-
44—
42-
40-
38-
36-
34 I • .
32-
30-
28
26
24-
�, _
a 22-
20-
18-
16
14-
12 I . •
10-
8-
6 I •
4-
2-
0_
i li i 111111 I1 r
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
63

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM01 Pond Hyd. No. 5
Hydrograph Type = Pond Route Peak Flow = 18.80 cfs
Storm Frequency = 50-yr Time to Peak = 12.07 hrs
Time Interval = 2 min Hydrograph Volume = 136,337 cuft
Inflow Hydrograph = 2 - SCM01 Max. Elevation = 637.13 ft
Pond Name = SCM01 Max. Storage = 67,178 cuft
Routing Option = Wet Pond Wet Pond Elevation = 634.00 ft
Pond Routing by Storage Indication Method Center of mass detention time=6.91 hrs
Qp = 18.80 cfs
70—
65=
60
55
50
45 •
40—
a 35-
30 •—
25—
20—
15 '
10-
5=
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54
Time(hrs)
—SCM01 —SCM01 Pond
64

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM02 Pond Hyd. No. 6
Hydrograph Type = Pond Route Peak Flow = 7.115 cfs
Storm Frequency = 50-yr Time to Peak = 12.10 hrs
Time Interval = 2 min Hydrograph Volume = 82,991 cuft
Inflow Hydrograph = 4 - SCM02 Max. Elevation = 645.76 ft
Pond Name = SCM02 Max. Storage = 40,977 cuft
Routing Option = Wet Pond Wet Pond Elevation = 643.50 ft
Pond Routing by Storage Indication Method Center of mass detention time=5.39 hrs
Qp = 7.11 cfs
46
44- .
42- .
40- .
38- .
36- .
34- .
32- .
30- .
28- .
26- .
24- .
_
C! 22- .
20- .
18- .
16- .
14- - .
12- .
10- .
8- .
6_
4_ .
2 •-
0- , , f I II , - I 1 I
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54
Time(hrs)
—SCM02—SCM02 Pond
65

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Pre SCM03 Hyd. No. 7
Hydrograph Type = NRCS Runoff Peak Flow = 25.23 cfs
Storm Frequency = 50-yr Time to Peak = 11.93 hrs
Time Interval = 2 min Runoff Volume = 51,035 cuft
Drainage Area = 6.47 ac Curve Number = 79*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 4.43 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
6.47 79 Woods
6.47 79 Weighted CN Method Employed
Qp = 25.23 cfs
28-
26—
24—
22
20 •
18
16 .
0,14
12 •
10-
8—
6'
4
2
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
66

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM03 Hyd. No. 8
Hydrograph Type = NRCS Runoff Peak Flow = 33.63 cfs
Storm Frequency = 50-yr Time to Peak = 11.93 hrs
Time Interval = 2 min Runoff Volume = 70,852 cuft
Drainage Area = 6.47 ac Curve Number = 88.89*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 4.43 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
1.24 80 Grass
5.23 91 Gravel
6.47 89 Weighted CN Method Employed
Qp = 33.63 cfs
38—
36-
34—
32_
30—
28—
26—
24—
22 I
20—
_18—
_
16-
14-
12-
10 — I
8— .
6—
4
2 • .
I
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
67

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM03 Pond Hyd. No. 9
Hydrograph Type = Pond Route Peak Flow = 10.55 cfs
Storm Frequency = 50-yr Time to Peak = 12.07 hrs
Time Interval = 2 min Hydrograph Volume = 70,420 cuft
Inflow Hydrograph = 8 - SCM03 Max. Elevation = 638.48 ft
Pond Name = SCM03 Max. Storage = 34,767 cuft
Routing Option = Wet Pond Wet Pond Elevation = 636.00 ft
Pond Routing by Storage Indication Method Center of mass detention time=5.77 hrs
Qp = 10.55 cfs
38 - —
36-
34-
32-
30-
28-
26
24-
22 •
-
20-
a 18-
16 •-
14-
12-
10 •
•
-
8-
6-
4
2
0- r1 - I I I I I
0 5 10 15 20 25 30 35 40 45 50 55 60
Time(hrs)
—SCM03—SCM03 Pond
68

Design Storm Report Custom Storm filename:
Hydrology Studio v 3.0.0.32 03-20-2024
Storm Distribution: NRCS/SCS - Type II, 24-hr
Storm Total Rainfall Volume(in)
Duration
1-yr 2-yr 3-yr 5-yr 10-yr 25-yr 4 50-yr 100-yr
24 hrs 1.82 2.28 0.00 2.85 3.31 3.94 4.43 4.94
Incremental Rainfall Distribution,50-yr
Time Precip Time Precip Time Precip Time Precip Time Precip
(hrs) (in) (hrs) (in) (hrs) (in) (hrs) (in) (hrs) (in)
10.90 0.009943 11.27 0.014176 11.63 0.058516 12.00 0.066573 12.37 0.017897
10.93 0.010140 11.30 0.014649 11.67 0.070171 12.03 0.029616 12.40 0.016775
10.97 0.010337 11.33 0.015121 11.70 0.081827 12.07 0.027998 12.43 0.015653
11.00 0.010534 11.37 0.015594 11.73 0.093483 12.10 0.026875 12.47 0.014530
11.03 0.010867 11.40 0.016066 11.77 0.107303 12.13 0.025753 12.50 0.013408
11.07 0.011341 11.43 0.016539 11.80 0.137553 12.17 0.024631 12.53 0.012720
11.10 0.011813 11.47 0.017011 11.83 0.169974 12.20 0.023509 12.57 0.012463
11.13 0.012286 11.50 0.017484 11.87 0.202395 12.23 0.022386 12.60 0.012207
11.17 0.012758 11.53 0.023581 11.90 0.234816 12.27 0.021264 12.63 0.011951
11.20 0.013231 11.57 0.035204 11.93 0.214291 12.30 0.020142 12.67 0.011695
11.23 0.013703 11.60 0.046860 11.97 0.140357 12.33 0.019020 12.70 0.011439
5- -5
4- -4
3-
2
I- -
2 -2
1- -1
0 i 0
0 2 4 6 8 10 12 14 16 18 20 22 24
Time(hrs)
69

Hydrograph 100-yr Summary Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Hyd. Hydrograph Hydrograph Peak Time to Hydrograph Inflow Maximum Maximum
No. Type Name Flow Peak Volume Hyd(s) Elevation Storage
(cfs) (hrs) (cuft) (ft) (cuft)
1 NRCS Runoff Pre SCM01 57.53 11.93 116,705 ----
2 NRCS Runoff Post SCM01 74.14 11.93 157,633 ----
3 NRCS Runoff Pre SCM02 39.12 11.93 79,363 ----
4 NRCS Runoff Post SCM02 46.71 11.93 97,041 ----
5 Pond Route Post SCM01 Pond 25.36 12.07 156,949 2 637.50 74,955
6 Pond Route Post SCM02 Pond 9.091 12.10 96,545 4 646.10 47,411
7 NRCS Runoff Pre SCM03 29.85 11.93 60,552
8 NRCS Runoff Post SCM03 38.38 11.93 81,537 ----
9 Pond Route Post SCM03 Pond 11.99 12.07 81,103 8 638.78 39,176
70

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Pre SCM01 Hyd. No. 1
Hydrograph Type = NRCS Runoff Peak Flow = 57.53 cfs
Storm Frequency = 100-yr Time to Peak = 11.93 hrs
Time Interval = 2 min Runoff Volume = 116,705 cuft
Drainage Area = 12.47 ac • Curve Number = 79*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 4.94 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
12.47 79 Wood
12.47 79 Weighted CN Method Employed
Qp = 57.53 cfs
65
60
55
50
45= _ •
40=
35—
0
30-
25-
20
15
10-
5-
0— i I i I i I i i I i i i I I I i , l l i j i i
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
71

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM01 Hyd. No. 2
Hydrograph Type = NRCS Runoff Peak Flow = 74.14 cfs
Storm Frequency = 100-yr Time to Peak = 11.93 hrs
Time Interval = 2 min Runoff Volume = 157,633 cuft
Drainage Area = 12.47 ac Curve Number = 89*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 4.94 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
0.1 79 Wood
2.27 80 Grass
10.1 91 Gravel
12.47 89 Weighted CN Method Employed
Qp = 74.14 cfs
85
80
75
70-
65
60 . •
55-
50-
45- .
_
a 40-
35-
- I
30-
25-
20-
15
10
5 _
0- I 1 , i I I , I I , i I I I I I t I
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
72

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Pre SCM02 Hyd. No. 3
Hydrograph Type = NRCS Runoff Peak Flow = 39.12 cfs
Storm Frequency = 100-yr Time to Peak = 11.93 hrs
Time Interval = 2 min Runoff Volume = 79,363 cuft
Drainage Area = 8.48 ac Curve Number = 79
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 4.94 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
Qp = 39.12 cfs
44—
42—
40—
38—
36—
34—
32 I • .
30—
28—
26
24-
-
4-
22—
-
20
18
16-
14-
12-
10
8-
6-
4
2
0— . 1 1
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
73

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM02 Hyd. No. 4
Hydrograph Type = NRCS Runoff Peak Flow = 46.71 cfs
Storm Frequency = 100-yr Time to Peak = 11.93 hrs
Time Interval = 2 min Runoff Volume = 97,041 cuft
Drainage Area = 8.48 ac Curve Number = 85.51*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 4.94 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
2.0 79 Wood
2.05 80 Grass
4.43 91 Gravel
8.48 86 Weighted CN Method Employed
Qp = 46.71 cfs
52-
50-
48—
46-
44
42—
40-
38—
36_ '
34— . •
32—
30 —
28—
_
26-
24—
22—
20—
_
•
18-
16
14
12— . •
10—
8—
6—
4—
2 .
0— I I I l I I I I I I 1 I r I ' II I t I
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
74

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM01 Pond Hyd. No. 5
Hydrograph Type = Pond Route Peak Flow = 25.36 cfs
Storm Frequency = 100-yr Time to Peak = 12.07 hrs
Time Interval = 2 min Hydrograph Volume = 156,949 cuft
Inflow Hydrograph = 2 - SCM01 Max. Elevation = 637.50 ft
Pond Name = SCM01 Max. Storage = 74,955 cuft
Routing Option = Wet Pond Wet Pond Elevation = 634.00 ft
Pond Routing by Storage Indication Method Center of mass detention time=5.43 hrs
Qp = 25.36 cfs
85
80-
75-
_
70- -
65-
60
55-
50-
45-
40-
35-
30_
25—
20-
15-
10
5
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52
Time(hrs)
—SCM01 —SCM01 Pond
75

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM02 Pond Hyd. No. 6
Hydrograph Type = Pond Route Peak Flow = 9.091 cfs
Storm Frequency = 100-yr Time to Peak = 12.10 hrs
Time Interval = 2 min Hydrograph Volume = 96,545 cuft
Inflow Hydrograph = 4 - SCM02 Max. Elevation = 646.10 ft
Pond Name = SCM02 Max. Storage = 47,411 cuft
Routing Option = Wet Pond Wet Pond Elevation = 643.50 ft
Pond Routing by Storage Indication Method Center of mass detention time=4.72 hrs
Qp = 9.09 cfs
52 -
50-
48-
46-
44—- -
42-
40- .
38-
36--
34 - -
32-
30-
28-
0' 26_
24-
22-
20- • •
18-
16
14-
12-
10- • • k • . . . . . • • • • • •
6
4
2
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52
Time(hrs)
—SCM02—SCM02 Pond
76

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Pre SCM03 Hyd. No. 7
Hydrograph Type = NRCS Runoff Peak Flow = 29.85 cfs
Storm Frequency = 100-yr Time to Peak = 11.93 hrs
Time Interval = 2 min Runoff Volume = 60,552 cuft
Drainage Area = 6.47 ac • Curve Number = 79*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 4.94 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
6.47 79 Woods
6.47 79 Weighted CN Method Employed
Qp = 29.85 cfs
34— F
32—
I
30—
28—
26 .
24-
22-
20
18-
16-
14
12 . •
10 . •
8
6-
4-
2— I
00) II
0— I l l l l l l l l l lI I I I I I I 1 I I— I I
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
77

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM03 Hyd. No. 8
Hydrograph Type = NRCS Runoff Peak Flow = 38.38 cfs
Storm Frequency = 100-yr Time to Peak = 11.93 hrs
Time Interval = 2 min Runoff Volume = 81,537 cuft
Drainage Area = 6.47 ac Curve Number = 88.89*
Tc Method = User Time of Conc. (Tc) = 5.0 min
Total Rainfall = 4.94 in Design Storm = Type II
Storm Duration = 24 hrs Shape Factor = 484
*Composite CN Worksheet
AREA(ac) CN DESCRIPTION
1.24 80 Grass
5.23 91 Gravel
6.47 89 Weighted CN Method Employed
Qp = 38.38 cfs
44—
42—
40—
38 I • . •
36— . •
34—
32 t
30—
28—
26—
24— . •
22— . •
O -
20—
18-
16-
14_
12-
10
8—
_ I I 1 I 1 1 1 i I I I I I I I i 11 I 1 , 1 1 1 I 1 . 1 t I i
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Time(hrs)
78

Hydrograph Report Project Name:
Hydrology Studio v 3.0.0.32 03-20-2024
Post SCM03 Pond Hyd. No. 9
Hydrograph Type = Pond Route Peak Flow = 11.99 cfs
Storm Frequency = 100-yr Time to Peak = 12.07 hrs
Time Interval = 2 min Hydrograph Volume = 81,103 cuft
Inflow Hydrograph = 8 - SCM03 Max. Elevation = 638.78 ft
Pond Name = SCM03 Max. Storage = 39,176 cuft
Routing Option = Wet Pond Wet Pond Elevation = 636.00 ft
Pond Routing by Storage Indication Method Center of mass detention time=4.46 hrs
Qp = 11.99 cfs
44-
42
40
38-
36-
34
32-
30 •
28-
26-
24-
-
22-
a -
20-
18-
16-
14-
12-
10-
8-
6-
4-
2-
0 5 10 15 20 25 30 35 40 45 50 55
Time(hrs)
—SCM03—SCM03 Pond
79

Design Storm Report Custom Storm filename:
Hydrology Studio v 3.0.0.32 03-20-2024
Storm Distribution: NRCS/SCS - Type II, 24-hr
Storm Total Rainfall Volume(in)
Duration
1-yr 2-yr 3-yr 5-yr 10-yr 25-yr 50-yr 4 100-yr
24 hrs 1.82 2.28 0.00 2.85 3.31 3.94 4.43 4.94
Incremental Rainfall Distribution, 100-yr
Time Precip Time Precip Time Precip Time Precip Time Precip
(hrs) (in) (hrs) (in) (hrs) (in) (hrs) (in) (hrs) (in)
10.90 0.011088 11.27 0.015808 11.63 0.065252 12.00 0.074237 12.37 0.019958
10.93 0.011307 11.30 0.016335 11.67 0.078250 12.03 0.033025 12.40 0.018706
10.97 0.011527 11.33 0.016862 11.70 0.091247 12.07 0.031221 12.43 0.017455
11.00 0.011746 11.37 0.017389 11.73 0.104245 12.10 0.029969 12.47 0.016203
11.03 0.012118 11.40 0.017916 11.77 0.119656 12.13 0.028718 12.50 0.014952
11.07 0.012646 11.43 0.018443 11.80 0.153389 12.17 0.027466 12.53 0.014185
11.10 0.013173 11.47 0.018970 11.83 0.189542 12.20 0.026215 12.57 0.013898
11.13 0.013700 11.50 0.019497 11.87 0.225696 12.23 0.024964 12.60 0.013612
11.17 0.014227 11.53 0.026296 11.90 0.261849 12.27 0.023712 12.63 0.013327
11.20 0.014754 11.57 0.039257 11.93 0.238961 12.30 0.022460 12.67 0.013042
11.23 0.015281 11.60 0.052254 11.97 0.156515 I 12.33 0.021209 12.70 0.012756
5- -5
4- -4
3- -3
2
U • -o
N I
2 -2
1- -1
0 2 4 6 8 10 12 14 16 18 20 22 24
Time(hrs)
80

IDF Report IDF filename:Mid-State Parcel Early Grading.IDF
Hydrology Studio v 3.0.0.32 03-20-2024
Equation Intensity=B/(Tc+D)AE(in/hr)
Coefficients 1-yr 2-yr 3-yr 5-yr 10-yr 25-yr 50-yr 100-yr
B 61.5178 71.3134 0.0000 73.8060 76.8063 64.1391 55.6315 49.5170
D 12.4000 12.6000 0.0000 12.6000 12.7000 11.1000 9.9000 8.9000
E 0.8817 0.8706 0.0000 0.8307 0.8115 0.7420 0.6907 0.6479
Minimum Tc=5 minutes
Tc Intensity Values(in/hr)
(min) 1-yr 2-yr 3-yr 5-yr 10-yr 25-yr 50-yr 100-yr
Cf 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00
5 4.96 5.87 0 6.81 7.46 8.16 8.61 9.00
10 3.97 4.72 0 5.54 6.09 6.68 7.05 7.37
15 3.32 3.97 0 4.69 5.19 5.70 6.04 6.33
20 2.86 3.43 0 4.08 4.53 5.01 5.32 5.60
25 2.52 3.03 0 3.63 4.04 4.48 4.78 5.05
30 2.26 2.72 0 3.27 3.65 4.07 4.36 4.62
35 2.05 2.47 0 2.98 3.34 3.74 4.02 4.27
40 1.88 2.26 0 2.74 3.08 3.46 3.74 3.98
45 1.73 2.09 0 2.55 2.86 3.23 3.50 3.74
50 1.61 1.95 0 2.38 2.67 3.03 3.29 3.53
55 1.50 1.82 0 2.23 2.51 2.86 3.12 3.35
60 1.41 1.71 0 2.10 2.37 2.71 2.96 3.19
Cf=Correction Factor applied to Rational Method runoff coefficient.
Sample IDF Curves
9 1
I - 100yr
8 -50yr
-25yr
7
1 - 10yr
6 -5yr
c - 2yr
5-
- - 1 yr
v
c 4
3
2
1 . 1 . i i i i I i 1 I III i i i i i i i i i i i i . 1 1 1 1 11 1 i i I I I
0 5 10 15 20 25 30 35 40 45 50 55 60
Time(min)
81

Precipitation Report Precipitation filename:SamplePrecip.pcp
Hydrology Studio v 3.0.0.32 (Rainfall totals in Inches) 03-20-2024
Active 1-yr 2-yr 3-yr 5-yr 10-yr 25-yr 50-yr 100-yr
Active J J J J J J
SCS Storms >SCS Dimensionless Storms
SCS 6hr 1.20 1.50 0 1.86 2.18 2.64 3.01 3.41
Type I,24-hr 1.82 2.28 0 2.85 3.31 3.94 4.43 4.94
Type IA,24-hr 1.82 2.28 0 2.85 3.31 3.94 4.43 4.94
Type II,24-hr J 1.82 2.28 0 2.85 3.31 3.94 4.43 4.94
Type II FL,24-hr 1.82 2.28 0 2.85 3.31 3.94 4.43 4.94
Type III,24-hr 1.82 2.28 0 2.85 3.31 3.94 4.43 4.94
Synthetic Storms >IDF-Based Synthetic Storms
1-hr 1.41 1.71 0 2.10 2.37 2.71 2.96 3.19
2-hr 1.66 2.02 0 2.55 2.91 3.44 3.86 4.25
3-hr 1.79 2.19 0 2.80 3.22 3.90 4.45 4.98
6-hr 2.00 2.47 0 3.24 3.77 4.77 5.62 6.45
12-hr 2.20 2.74 0 3.69 4.36 5.77 7.03 8.30
24-hr 2.41 3.02 0 4.18 5.01 6.94 8.75 10.64
Huff Distribution >1st Quartile(0 to 6 hrs)
1-hr 0.76 0.98 0 1.33 1.61 2.01 2.34 2.69
2-hr 0.89 1.14 0 1.50 1.80 2.24 2.60 2.99
3-hr 0.98 1.24 0 1.59 1.90 2.33 2.68 3.07
6-hr 1.20 1.50 0 1.86 2.18 2.64 3.01 3.41
Huff Distribution >2nd Quartile(>6 to 12 hrs)
8-hr 0 0 0 0 0 0 0 0
12-hr 0 0 0 0 0 0 0 0
Huff Distribution >3rd Quartile(>12 to 24 hrs)
18-hr 0 0 0 0 0 0 0 0
24-hr 0 0 0 0 0 0 0 0
Custom Storms >Custom Storm Distributions
My Custom Storm 1 0 0 0 0 0 0 0 0
My Custom Storm 2 0 0 0 0 0 0 0 0
My Custom Storm 3 0 0 0 0 0 0 0 0
My Custom Storm 4 0 0 0 0 0 0 0 0
My Custom Storm 5 0 0 0 0 0 0 0 0
My Custom Storm 6 0 0 0 0 0 0 0 0
My Custom Storm 7 0 0 0 0 0 0 0 0
My Custom Storm 8 0 0 0 0 0 0 0 0
My Custom Storm 9 0 0 0 0 0 0 0 0
My Custom Storm 10 0 0 0 0 0 0 0 0
82

Precipitation filename:SamplePrecip.pcp
Precipitation Report Cont'd
Rainfall totals in Inches 03-20-2024
Active 1-yr 2-yr 3-yr 5-yr 10-yr 25-yr 50-yr 100-yr
Active J d J J J J
Huff Indiana >Indianapolis
30-min 0.99 1.19 0 1.44 1.63 1.89 2.08 2.28
1-hr 1.21 1.46 0 1.81 2.08 2.45 2.75 3.06
2-hr 1.46 1.77 0 2.22 2.57 3.05 3.44 3.85
3-hr 1.57 1.90 0 2.38 2.76 3.30 3.75 4.21
6-hr 1.92 2.31 0 2.88 3.36 4.01 4.56 5.13
12-hr 0 0 0 0 0 0 0 0
24-hr 0 0 0 0 0 0 0 0
Huff Indiana >Evansville
30-min 0.99 1.19 0 1.44 1.63 1.89 2.08 2.28
1-hr 1.21 1.46 0 1.81 2.08 2.45 2.75 3.06
2-hr 1.46 1.77 0 2.22 2.57 3.05 3.44 3.85
3-hr 1.57 1.90 0 2.38 2.76 3.30 3.75 4.21
6-hr 1.92 2.31 0 2.88 3.36 4.01 4.56 5.13
12-hr 0 0 0 0 0 0 0 0
24-hr 0 0 0 0 0 0 0 0
Huff Indiana >Fort Wayne
30-min 0.99 1.19 0 1.44 1.63 1.89 2.08 2.28
1-hr 1.21 1.46 0 1.81 2.08 2.45 2.75 3.06
2-hr 1.46 1.77 0 2.22 2.57 3.05 3.44 3.85
3-hr 1.57 1.90 0 2.38 2.76 3.30 3.75 4.21
6-hr 1.92 2.31 0 2.88 3.36 4.01 4.56 5.13
12-hr 0 0 0 0 0 0 0 0
24-hr 0 0 0 0 0 0 0 0
Huff Indiana >South Bend
30-min 0.99 1.19 0 1.44 1.63 1.89 2.08 2.28
1-hr 1.21 1.46 0 1.81 2.08 2.45 2.75 3.06
2-hr 1.46 1.77 0 2.22 2.57 3.05 3.44 3.85
3-hr 1.57 1.90 0 2.38 2.76 3.30 3.75 4.21
6-hr 1.92 2.31 0 2.88 3.36 4.01 4.56 5.13
12-hr 0 0 0 0 0 0 0 0
24-hr 0 0 0 0 0 0 0 0
83

Precipitation filename:SamplePrecip.pcp
Precipitation Report Cont'd
Rainfall totals in Inches 03-20-2024
Active 1-yr 2-yr 3-yr 5-yr 10-yr 25-yr 50-yr 100-yr
Active J J J J J J
NRCS Storms >NRCS Dimensionless Storms
NRCS MSE1,24-hr 2.72 3.27 0 4.07 4.72 5.63 6.37 7.15
NRCS MSE2,24-hr 2.72 3.27 0 4.07 4.72 5.63 6.37 7.15
NRCS MSE3,24-hr 2.72 3.27 0 4.07 4.72 5.63 6.37 7.15
NRCS MSE4,24-hr 2.72 3.27 0 4.07 4.72 5.63 6.37 7.15
NRCS MSE5,24-hr 2.72 3.27 0 4.07 4.72 5.63 6.37 7.15
NRCS MSE6,24-hr 2.72 3.27 0 4.07 4.72 5.63 6.37 7.15
NOAA-A,24-hr 2.72 3.27 0 4.07 4.72 5.63 6.37 7.15
NOAA-B,24-hr 2.72 3.27 0 4.07 4.72 5.63 6.37 7.15
NOAA-C,24-hr 2.72 3.27 0 4.07 4.72 5.63 6.37 7.15
NOAA-D,24-hr 2.72 3.27 0 4.07 4.72 5.63 6.37 7.15
NRCC-A,24-hr 2.72 3.27 0 4.07 4.72 5.63 6.37 7.15
NRCC-B,24-hr 2.72 3.27 0 4.07 4.72 5.63 6.37 7.15
NRCC-C,24-hr 2.72 3.27 0 4.07 4.72 5.63 6.37 7.15
NRCC-D,24-hr 2.72 3.27 0 4.07 4.72 5.63 6.37 7.15
CA-1,24-hr 2.72 3.27 0 4.07 4.72 5.63 6.37 7.15
CA-2,24-hr 2.72 3.27 0 4.07 4.72 5.63 6.37 7.15
CA-3,24-hr 2.72 3.27 0 4.07 4.72 5.63 6.37 7.15
CA-4,24-hr 2.72 3.27 0 4.07 4.72 5.63 6.37 7.15
CA-5,24-hr 2.72 3.27 0 4.07 4.72 5.63 6.37 7.15
CA-6,24-hr 2.72 3.27 0 4.07 4.72 5.63 6.37 7.15
FDOT Storms >Florida DOT Storms
FDOT,1-hr 0 2.14 2.36 2.58 2.92 3.35 3.66 3.95
FDOT,2-hr 0 2.70 3.00 3.26 3.69 4.24 4.64 5.00
FDOT,4-hr 0 3.28 3.76 4.00 4.80 5.50 6.20 6.80
FDOT,8-hr 0 3.76 4.32 4.80 5.60 6.20 7.20 8.00
FDOT,24-hr 0 4.28 4.75 5.21 6.11 7.53 8.78 10.20
FDOT,72-hr 0 5.44 6.10 6.74 7.98 9.92 11.60 13.40
SFWMD,72-hr 0 5.44 6.10 6.74 7.98 9.92 11.60 13.40
Austin Storms >Austin Frequency Storms
Austin Zone 1,24-hr 0 4.14 0 5.51 6.84 8.90 10.69 12.80
Austin Zone 2,24-hr 0 4.06 0 5.38 6.65 8.59 10.28 12.23
84

Culvert Report Project filename:200-143 SCM Pipe Outlet.cst
Culvert Studio v 2.0.0.29 03-21-2024
SCM01 Culvert 1
CULVERT EMBANKMENT
Shape = Circular Top Width = 30.00 ft
Inlet Edge = Projecting Top Elevation = 638.00 ft
Material = Concrete Crest Length = 10.00 ft
Manning's n = 0.012
Rise = 24 in DISCHARGE
Span = 24 in Method = User-defined
Invert Elev. Down = 632.83 ft
Length = 117 ft
Slope = 0.010 ft/ft
Invert Elev. Up = 634.00 ft
No. Barrels = 1 TAILWATER
Plan Skew Angle = 0 degrees Tailwater Elevation = Normal Depth
CALCULATION SAMPLE
Discharge Velocity Riprap Apron Design
Total Culvert Over Top Down Up Length Width Depth D50 Velocity
(cfs) (cfs) (cfs) (ft/s) (ft/s) (ft) (ft) (ft) (in) (ft/s)
4.83 4.83 0.00 6.02 4.25 9.06 11.36 1.46 5 2.40
Elev(ft) SCM01 -Riprap Apron Section Bev(ft)
6
8.00
.00
637 7
............... 637.00
636.00 ............... 636.00
635.00 ............... 635.00
634.00 atillill .
634.00
633.00 -
633.00
632.00 632.00
631.00 631.00
630.00 1- 630.00
629.00 629.00
-2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13
Distance(ft)
Plan
FHWA Class 1,D50=5 in

Culvert Report Project filename:200-143 SCM Pipe Outlet.cst
Culvert Studio v 2.0.0.29 03-21-2024
SCM02 Culvert 2
CULVERT EMBANKMENT
Shape = Circular Top Width = 30.00 ft
Inlet Edge = Projecting Top Elevation = 646.00 ft
Material = Concrete Crest Length = 10.00 ft
Manning's n = 0.012
Rise = 18 in DISCHARGE
Span = 18 in Method = User-defined
Invert Elev. Down = 642.96 ft
Length = 90.0 ft
Slope = 0.006 ft/ft
Invert Elev. Up = 643.50 ft
No. Barrels = 1 TAILWATER
Plan Skew Angle = 0 degrees Tailwater Elevation = Normal Depth
CALCULATION SAMPLE
Discharge Velocity Riprap Apron Design
Total Culvert Over Top Down Up Length Width Depth D50 Velocity
(cfs) (cfs) (cfs) (ft/s) (ft/s) (ft) (ft) (ft) (in) (ft/s)
2.81 2.81 0.00 4.43 3.90 6.78 8.52 1.46 5 2.21
Elev(11) SCM02-Riprap Apron Section Elev(ft)
648.00 648.00
647.00 - . 647.00
646.00 • 646.00
645.00 645.00
644.00 7 - 644.00
643.00 . 643.00
1
642.00 642.00
1ABA
641.00 641.00
640.00 640.00
-2 -1 0 1 2 3 4 5 6 7 8 9 10
Distance(8)
Plan
FHWA Gass 1,D50=5 in

Culvert Report Project filename:200-143 SCM Pipe Outlet.cst
Culvert Studio v 2.0.0.29 03-21-2024
SCM03 Culvert 3
CULVERT EMBANKMENT
Shape = Circular Top Width = 30.00 ft
Inlet Edge = Projecting Top Elevation = 640.00 ft
Material = Concrete Crest Length = 10.00 ft
Manning's n = 0.012
Rise = 18 in DISCHARGE
Span = 18 in Method = User-defined
Invert Elev. Down = 634.86 ft
Length = 73.0 ft
Slope = 0.016 ft/ft
Invert Elev. Up = 636.00 ft
No. Barrels = 1 TAILWATER
Plan Skew Angle = 0 degrees Tailwater Elevation = Normal Depth
CALCULATION SAMPLE
Discharge Velocity Riprap Apron Design
Total Culvert Over Top Down Up Length Width Depth D50 Velocity
(cfs) (cfs) (cfs) (ft/s) (ft/s) (ft) (ft) (ft) (in) (ft/s)
2.48 2.48 0.00 5.99 3.75 7.06 8.52 1.46 5 2.12
Elev(ft) SCM03-Riprap Apron Section Elev(ft)
640.00 - 640.00
639.00 639.00
638.00 638.00
637.00 637.00
636.00 - 636.00
635.00 - ngu 635.00
I
634.00 1 634.00
11.46 ft
633.00 633.00
632.00 632.00
631.00 631.00
-2 -1 0 1 2 3 4 5 6 7 8 9 10
Distance(ft)
Plan
FHWA Gass 1,D50=5 in