SW3191101_SW Report_20200414

2

Table of Contents

General Project Description ............................................................................................................... 3
General Project Overview and Existing Conditions ................................................................ 3
Stormwater Requirements Overview ....................................................................................... 3
SCM Systems Overview………...…………………………………………………………....3

Stormwater Management Analysis and BMP Calculations ............................................................ 3
Volume Control………………………………………………………………………………3
Pre vs. Post Analysis ................................................................................................................ 4

Appendix .............................................................................................................................................. 5
Detention Worksheets
HydroCAD Models
Storm Sewers Results
Soils Report
Rip Rap Apron Calculations
Ballast Pad Calculations
Erosion Calculations

3

General Project Description/Stormwater Management
GENERAL PROJECT OVERVIEW AND EXISTING CONDITIONS

The proposed development will be situated on approximately 10.6 acres, split between northern and
southern sites by Cresset Dillinger Road. The development will include 9 multifamily residential
buildings, a club house, several detached parking garages, and all associated traffic and utility
infrastructure that is required.

The site consists of wooded and grassed areas with a single-family home located on a portion of the
parcel south of Cresset Dillinger Road. The site has a ridge line running north to south approximately
through the middle of the development. The drainage area west of this ridge will ultimately flow to a low
point on the property, through a proposed wet pond, and into a bypass system. This bypass system
eventually discharges to Forney Creek. The point of discharge from the proposed wet pond to the bypass
system will be point-of-interest 1, or POI 1. The drainage area east of the ridge line drains toward Pilot
Knob Road, where drainage swales convey water to a culvert under Pilot Knob Road, to its ultimate
destination of Mountain Island Lake. The culvert under Pilot Knob Road is considered to be point-of-
interest 2, or POI 2.

STORMWATER REQUIREMENTS OVERVIEW

Please see below for the stormwater control requirements for this site:
- The wet ponds have been designed to treat the first 1” of runoff with a drawdown time between 2-
5 days.
- Wet ponds have been designed for 85% TSS removal.
- Above the water quality volume, the 2-, 10-, and 25-year, 24-hour storm events have been
controlled so that the post-development peak flows are less than their pre-development peak
flows
- Wet ponds have been designed to provide 1’ of free board during the 100-year storm event.

SCM SYSTEM OVERVIEW

To meet the requirements described above, 2 wet ponds will be used. Associated bypass facilities will be
installed to divert offsite water around the proposed BMPs

Stormwater Management and BMP Calculations

Water Quality:

The minimum required water quality volume to treat the first 1” of rainfall from the development has
been calculated for Wet Pond #1 and #2 as 7,726 cubic feet and 15,950 cubic feet respectively. This
volume is controlled in Wet Pond #1 and #2 using a water quality orifices of 1.50” and 2.00” in diameter
respectively at the permanent pool elevations, with the next available outlet above the elevation required
to meet the water quality volume. This orifice results in a drawdown of the water quality volume within
2-5 days.

4

BMP Sizing:

The wet ponds are designed based on the impervious percentage draining to them, the average depth of
the permanent pools as calculated by Option 2 from Figure 10-2b, and the resulting required surface areas
to drainage areas ratio. These values and their calculations can be seen in the attached wet pond sizing
and wet pond supplement spreadsheets. All drainage from impervious areas have been designed to be
discharged into the forebays. The forebays has been designed to be 15-20% of the total permanent pool
storage volumes.

A water quality orifices are used at the base of the riser structures to draw down the water quality
volumes within 2-5 days. The next available outlets on the riser structures are placed above the required
water quality volumes. The elevations of this next available outlets are considered the temporary pool
volumes, and these elevations (and resulting pressure head values used for the orifice equation) were used
when determining the drawdown times through the water quality orifices.

Pre/Post Analysis:

A summary of the pre/post peak discharge rates for each point of interest within the development have
been listed below. Support calculations have been included within the appendix section of this report.

POI-1 Pre-Development Post-Development
Total DA Total DA
2-year 9.90 cfs 3.76 cfs
10-year 19.99 cfs 10.09 cfs
25-year 26.73 cfs 13.15 cfs

POI-2 Pre-Development Post-Development
Total DA Total DA
2-year 9.82 cfs 5.02 cfs
10-year 20.55 cfs 8.83 cfs
25-year 27.73 cfs 21.43 cfs

5

Hydrologic Soil Group—Lincoln County, North Carolina
(Cambridge Village - Soil Survey)
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
10/11/2019
Page 1 of 4392256039226203922680392274039228003922860392292039229803923040392256039226203922680392274039228003922860392292039229803923040500550500610500670500730500790500850500910
500550 500610 500670 500730 500790 500850 500910
35° 27' 3'' N 80° 59' 38'' W35° 27' 3'' N80° 59' 22'' W35° 26' 46'' N
80° 59' 38'' W35° 26' 46'' N
80° 59' 22'' WN
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 17N WGS84
0 100 200 400 600
Feet
0 35 70 140 210
Meters
Map Scale: 1:2,630 if printed on A portrait (8.5" x 11") sheet.
Soil Map may not be valid at this scale.
MAP LEGEND MAP INFORMATION
Area of Interest (AOI)
Area of Interest (AOI)
Soils
Soil Rating Polygons
A
A/D
B
B/D
C
C/D
D
Not rated or not available
Soil Rating Lines
A
A/D
B
B/D
C
C/D
D
Not rated or not available
Soil Rating Points
A
A/D
B
B/D
C
C/D
D
Not rated or not available
Water Features
Streams and Canals
Transportation
Rails
Interstate Highways
US Routes
Major Roads
Local Roads
Background
Aerial Photography
The soil surveys that comprise your AOI were mapped at
1:24,000.
Warning: Soil Map may not be valid at this scale.
Enlargement of maps beyond the scale of mapping can cause
misunderstanding of the detail of mapping and accuracy of soil
line placement. The maps do not show the small areas of
contrasting soils that could have been shown at a more detailed
scale.
Please rely on the bar scale on each map sheet for map
measurements.
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL:
Coordinate System: Web Mercator (EPSG:3857)
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
distance and area. A projection that preserves area, such as the
Albers equal-area conic projection, should be used if more
accurate calculations of distance or area are required.
This product is generated from the USDA-NRCS certified data as
of the version date(s) listed below.
Soil Survey Area: Lincoln County, North Carolina
Survey Area Data: Version 23, Sep 16, 2019
Soil map units are labeled (as space allows) for map scales
1:50,000 or larger.
Date(s) aerial images were photographed: Apr 23, 2014—Nov
28, 2017
The orthophoto or other base map on which the soil lines were
compiled and digitized probably differs from the background
imagery displayed on these maps. As a result, some minor
shifting of map unit boundaries may be evident.
Hydrologic Soil Group—Lincoln County, North Carolina
(Cambridge Village - Soil Survey)
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
10/11/2019
Page 2 of 4
Hydrologic Soil Group
Map unit symbol Map unit name Rating Acres in AOI Percent of AOI
LdB2 Lloyd sandy clay loam, 2
to 8 percent slopes,
moderately eroded
B 12.0 87.7%
LdC2 Lloyd sandy clay loam, 8
to 15 percent slopes,
moderately eroded
B 1.7 12.3%
Totals for Area of Interest 13.7 100.0%
Description
Hydrologic soil groups are based on estimates of runoff potential. Soils are
assigned to one of four groups according to the rate of water infiltration when the
soils are not protected by vegetation, are thoroughly wet, and receive
precipitation from long-duration storms.
The soils in the United States are assigned to four groups (A, B, C, and D) and
three dual classes (A/D, B/D, and C/D). The groups are defined as follows:
Group A. Soils having a high infiltration rate (low runoff potential) when
thoroughly wet. These consist mainly of deep, well drained to excessively
drained sands or gravelly sands. These soils have a high rate of water
transmission.
Group B. Soils having a moderate infiltration rate when thoroughly wet. These
consist chiefly of moderately deep or deep, moderately well drained or well
drained soils that have moderately fine texture to moderately coarse texture.
These soils have a moderate rate of water transmission.
Group C. Soils having a slow infiltration rate when thoroughly wet. These consist
chiefly of soils having a layer that impedes the downward movement of water or
soils of moderately fine texture or fine texture. These soils have a slow rate of
water transmission.
Group D. Soils having a very slow infiltration rate (high runoff potential) when
thoroughly wet. These consist chiefly of clays that have a high shrink-swell
potential, soils that have a high water table, soils that have a claypan or clay
layer at or near the surface, and soils that are shallow over nearly impervious
material. These soils have a very slow rate of water transmission.
If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is
for drained areas and the second is for undrained areas. Only the soils that in
their natural condition are in group D are assigned to dual classes.
Hydrologic Soil Group—Lincoln County, North Carolina Cambridge Village - Soil Survey
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
10/11/2019
Page 3 of 4
Rating Options
Aggregation Method: Dominant Condition
Component Percent Cutoff: None Specified
Tie-break Rule: Higher
Hydrologic Soil Group—Lincoln County, North Carolina Cambridge Village - Soil Survey
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
10/11/2019
Page 4 of 4
DESIGN:
GIVEN:
3.13 Ac.
70%
4.15 FEET
70%
SA/DA = 2.05 % = 0.0205
SA REQUIRED = 3.13 Ac. X 0.0205
= 0.06 Ac.
= 2,795 SF
THE VOLUME FOR THE 1" STORM EVENT CAN BE CALCULATED AS:
Design Rainfall = 1 Inch
Drainage Area = 3.13 Acres
Rv = 0.05 + 0.9(I)
I = Percent Impervious = 70%
Rv = 0.68 in./in.
V1 =0.177 acre-feet = 7,726
ft3
Pond Height above Orifice = 788.50 feet
Orifice Invert Elevation = 787.50 feet
Orifice Diameter (D) = 1.50 inches = 0.13 feet
Orifice Area (a) = 0.0123 square feet
Gravitational Constant (g) = 32.2 ft/sec2
Head (H) = 0.94 feet
Driving Head (HO) =0.313 feet
Discharge Coefficient (CD) =0.6
Drawdown rate (Q) = 0.033 cfs
Time (t) = 233,900 seconds = 2.71 days
Note:
The above calculation is based on the orifice equation where:
WET POND #1 CAMBRIDGE VILLAGE (DENVER, NC)
WATER QUALITY TO MEET 85% TSS REMOVAL
DRAINAGE AREA TO FACILITY =
LAND USE = Apartments
ESTIMATED PERCENT IMPERVIOUS =
PROVIDE VOLUME TO DETAIN THE 1" STORM EVENT ABOVE THE ELEVATION
ALLOCATED AS A PERMANENT POOL
3) Pond Drawdown Time
V1 = (Design Rainfall)(Rv)(Drainage Area)
1) SA/DA RATIO:
AVERAGE POOL DEPTH =
PERCENT IMPERVIOUS =
2) TEMPORARY WATER QUALITY POOL REQUIREMENTS
4/12/2020 8:11 PM Page 1 of 4
Elev Area (sf)Inc Storage (cf)Total Storage (cf)
787.50 7,516 0 0
788.00 8,588 4,026 4,026
789.00 9,858 9,223 13,249
790.00 11,185 10,522 23,771
791.00 12,569 11,877 35,648
792.00 14,008 13,289 48,936
Elev Area (sf) Inc Storage (cf) Total Storage (cf)
782.00 2,406 0 0
783.00 2,858 2,632 2,632
784.00 3,340 3,099 5,731
785.00 3,853 3,597 9,328
786.00 4,397 4,125 13,453
787.00 4,960 4,679 18,131
787.50 5,852 2,703 20,834
Elev Area (sf) Inc Storage (cf) Total Storage (cf)
784.00 469 0 0
785.00 753 611 611
786.00 1,080 917 1,528
787.00 1,456 1,268 2,796
787.50 1,663 780 3,575
Wet Pond 1 Permanent Pool - Forebay
Wet Pond #1 Design
Wet Pond 1 Treatment Volume
Wet Pond 1 Permanent Pool Volume - Main Pool
4/12/2020 8:11 PM Page 2 of 4
DESIGN:
GIVEN:
7.38 Ac.
61%
5.3 FEET
61%
SA/DA = 1.44 % = 0.0144
SA REQUIRED = 7.38 Ac. X 0.0144
= 0.11 Ac.
= 4,629 SF
THE VOLUME FOR THE 1" STORM EVENT CAN BE CALCULATED AS:
Design Rainfall = 1 Inch
Drainage Area = 7.38 Acres
Rv = 0.05 + 0.9(I)
I = Percent Impervious = 61%
Rv = 0.60 in./in.
V1 =0.366 acre-feet = 15,950
ft3
Pond Height above Orifice = 778.30 feet
Orifice Invert Elevation = 777.00 feet
Orifice Diameter (D) = 2.00 inches = 0.17 feet
Orifice Area (a) = 0.0218 square feet
Gravitational Constant (g) = 32.2
ft/sec2
Head (H) = 1.22 feet
Driving Head (HO) =0.406 feet
Discharge Coefficient (CD) =0.6
Drawdown rate (Q) = 0.067 cfs
Time (t) = 238,432 seconds = 2.76 days
Note:
The above calculation is based on the orifice equation where:
2) TEMPORARY WATER QUALITY POOL REQUIREMENTS
PROVIDE VOLUME TO DETAIN THE 1" STORM EVENT ABOVE THE ELEVATION
ALLOCATED AS A PERMANENT POOL
V1 = (Design Rainfall)(Rv)(Drainage Area)
3) Pond Drawdown Time
1) SA/DA RATIO:
AVERAGE POOL DEPTH =
PERCENT IMPERVIOUS =
WET POND #2 CAMBRIDGE VILLAGE (DENVER, NC)
WATER QUALITY TO MEET 90% TSS REMOVAL
DRAINAGE AREA TO FACILITY =
LAND USE = Apartments
ESTIMATED PERCENT IMPERVIOUS =
4/12/2020 8:11 PM Page 3 of 4
Elev Area (sf)Inc Storage (cf)Total Storage (cf)
776.50 0 0 0
777.00 11,638 2,910 2,910
778.00 13,738 12,688 15,598
779.00 15,894 14,816 30,414
780.00 18,107 17,001 47,414
781.00 20,376 19,242 66,656
782.00 21,898 21,137 87,793
783.00 24,177 23,038 110,830
Area (sf) Inc Storage (cf) Total Storage (cf)
770 2525
776 5630 24,465 24,465
776.5 6548 3,045 27,510
777 8292 3,710 31,220
Elev Area (sf) Inc Storage (cf) Total Storage (cf)
773.00 719
776.00 1,606 3,488 3,488
777.00 3,034 2,320 5,808
Wet Pond #2 Design
Wet Pond 2 Treatment Volume
Wet Pond 2 Permanent Pool Volume - Main Pool
Wet Pond 2 Permanent Pool - Forebay
4/12/2020 8:11 PM Page 4 of 4
Project Name:Cambridge Village MF Pond #1
Ballast Pad Design for Detention Basin
Wet Pond 1 792 ft. Top of Basin
1 ft. Spillway Height
791 ft. Spillway Elev.
Box Width: 48.00 in
Box Length 48.00 in
Barrel Size: 24.00 in 48 in.BOX
Top of Basin: 792.00 ft.
Inv. Out of Pipe 787.50 ft. 3.00 4.5 ft.
Spillway Height: 1.00 ft.
Top of Riser Elev. 790.50 ft.
787.5 ft. Bottom of Basin
Ballast Pad 24 in. RCP
Uplift @ Peak Elevation:
Peak Elevation =792 ft.
Peak Elevation = 4.5 ft.
Uplift Force= (62.4)(4.5 ft.)(4*4)
Uplift Force= 4492.8 lbs
48 in.BOX
Volume of Concrete Required to Stabilize Riser:
4492.8 lbs X 1/150 lbs/ft^3= 29.952 cubic feet
Ballast Pad
Ballast Pad Dimensions:
5 ft. 1.5 ft.
Try Volume of: 5 ft. X 5 ft. X 1.5 ft.
5 ft.
37.5 cubic feet Ok
37.5 c.f. > or equal to 29.952 c.f. True
Ballast Pad Dimensions:5 ft. X 5 ft. X 1.5 ft.
Project Name:Cambridge Village MF Pond #2
Ballast Pad Design for Detention Basin
Wet Pond 2 783 ft. Top of Basin
2.25 ft. Spillway Height
780.75 ft. Spillway Elev.
Box Width: 48.00 in
Box Length 48.00 in
Barrel Size: 24.00 in 48 in.BOX
Top of Basin: 783.00 ft.
Inv. Out of Pipe 776.50 ft. 4.00 6.5 ft.
Spillway Height: 2.25 ft.
Top of Riser Elev. 780.50 ft.
776.5 ft. Bottom of Basin
Ballast Pad 24 in. RCP
Uplift @ Peak Elevation:
Peak Elevation =783 ft.
Peak Elevation = 6.5 ft.
Uplift Force= (62.4)(6.5 ft.)(4*4)
Uplift Force= 6489.6 lbs
48 in.BOX
Volume of Concrete Required to Stabilize Riser:
6489.6 lbs X 1/150 lbs/ft^3= 43.264 cubic feet
Ballast Pad
Ballast Pad Dimensions:
5 ft. 2 ft.
Try Volume of: 5 ft. X 5 ft. X 2 ft.
5 ft.
50 cubic feet Ok
50 c.f. > or equal to 43.264 c.f. True
Ballast Pad Dimensions:5 ft. X 5 ft. X 2 ft.
1S
Ex DA-1
2S
Ex DA-2
4S
Prop DA-1
5S
Prop DA-2
6S
Prop DA-3
10S
DA-2 Bypass A
4P
Wet Pond 1
5P
Wet Pond 2
3L
Ex Drainage Areas
7L
POI-1
8L
POI-2
9L
Combined
Routing Diagram for Cambridge Village - HydroCAD with ODA
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Subcat Reach Pond Link
Cambridge Village - HydroCAD with ODA
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Area Listing (all nodes)
Area
(acres)
CN Description
(subcatchment-numbers)
2.420 75 (10S)
12.115 69 50-75% Grass cover, Fair, HSG B (1S, 2S)
4.433 61 >75% Grass cover, Good, HSG B (4S, 5S, 6S)
5.982 98 Paved parking, HSG B (1S, 2S, 4S, 5S, 6S)
1.600 98 Roofs, HSG B (5S)
0.350 98 Water Surface, 0% imp, HSG B (5S)
26.900 77 TOTAL AREA
Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
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Soil Listing (all nodes)
Area
(acres)
Soil
Group
Subcatchment
Numbers
0.000 HSG A
24.480 HSG B 1S, 2S, 4S, 5S, 6S
0.000 HSG C
0.000 HSG D
2.420 Other 10S
26.900 TOTAL AREA
Cambridge Village - HydroCAD with ODA
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Ground Covers (all nodes)
HSG-A
(acres)
HSG-B
(acres)
HSG-C
(acres)
HSG-D
(acres)
Other
(acres)
Total
(acres)
Ground
Cover
Subcatchment
Numbers
0.000 0.000 0.000 0.000 2.420 2.420 10S
0.000 12.115 0.000 0.000 0.000 12.115 50-75% Grass cover, Fair 1S, 2S
0.000 4.433 0.000 0.000 0.000 4.433 >75% Grass cover, Good 4S, 5S,
6S
0.000 5.982 0.000 0.000 0.000 5.982 Paved parking 1S, 2S,
4S, 5S,
6S
0.000 1.600 0.000 0.000 0.000 1.600 Roofs 5S
0.000 0.350 0.000 0.000 0.000 0.350 Water Surface, 0% imp 5S
0.000 24.480 0.000 0.000 2.420 26.900 TOTAL AREA
Cambridge Village - HydroCAD with ODA
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Pipe Listing (all nodes)
Line# Node
Number
In-Invert
(feet)
Out-Invert
(feet)
Length
(feet)
Slope
(ft/ft)
n Diam/Width
(inches)
Height
(inches)
Inside-Fill
(inches)
1 4P 787.50 787.38 23.7 0.0051 0.013 24.0 0.0 0.0
2 5P 776.50 775.72 77.6 0.0101 0.013 24.0 0.0 0.0
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
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Time span=0.00-120.00 hrs, dt=0.05 hrs, 2401 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Runoff Area=6.010 ac 5.66% Impervious Runoff Depth=0.98"Subcatchment 1S: Ex DA-1
Flow Length=699' Tc=12.0 min CN=71 Runoff=9.90 cfs 0.492 af
Runoff Area=6.650 ac 3.08% Impervious Runoff Depth=0.93"Subcatchment 2S: Ex DA-2
Flow Length=790' Tc=13.1 min CN=70 Runoff=9.82 cfs 0.515 af
Runoff Area=3.130 ac 69.33% Impervious Runoff Depth=2.07"Subcatchment 4S: Prop DA-1
Tc=5.0 min CN=87 Runoff=14.43 cfs 0.539 af
Runoff Area=7.380 ac 60.57% Impervious Runoff Depth=1.90"Subcatchment 5S: Prop DA-2
Tc=5.0 min CN=85 Runoff=31.55 cfs 1.171 af
Runoff Area=1.310 ac 30.31% Impervious Runoff Depth=1.04"Subcatchment 6S: Prop DA-3
Tc=5.0 min CN=72 Runoff=2.98 cfs 0.113 af
Runoff Area=2.420 ac 0.00% Impervious Runoff Depth=1.21"Subcatchment 10S: DA-2 Bypass A
Tc=5.0 min CN=75 Runoff=6.53 cfs 0.244 af
Peak Elev=789.07' Storage=13,702 cf Inflow=14.43 cfs 0.539 afPond 4P: Wet Pond 1
Primary=2.82 cfs 0.536 af Secondary=0.00 cfs 0.000 af Outflow=2.82 cfs 0.536 af
Peak Elev=779.22' Storage=30,134 cf Inflow=31.55 cfs 1.171 afPond 5P: Wet Pond 2
Primary=5.02 cfs 1.164 af Secondary=0.00 cfs 0.000 af Outflow=5.02 cfs 1.164 af
Inflow=19.72 cfs 1.007 afLink 3L: Ex Drainage Areas
Primary=19.72 cfs 1.007 af
Inflow=3.76 cfs 0.649 afLink 7L: POI-1
Primary=3.76 cfs 0.649 af
Inflow=5.02 cfs 1.164 afLink 8L: POI-2
Primary=5.02 cfs 1.164 af
Inflow=8.51 cfs 1.814 afLink 9L: Combined
Primary=8.51 cfs 1.814 af
Total Runoff Area = 26.900 ac Runoff Volume = 3.073 af Average Runoff Depth = 1.37"
71.81% Pervious = 19.318 ac 28.19% Impervious = 7.582 ac
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
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Summary for Subcatchment 1S: Ex DA-1
Runoff = 9.90 cfs @ 3.27 hrs, Volume= 0.492 af, Depth= 0.98"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Charlotte 6-hr 2-yr Rainfall=3.37"
Area (ac) CN Description
5.670 69 50-75% Grass cover, Fair, HSG B
0.340 98 Paved parking, HSG B
6.010 71 Weighted Average
5.670 94.34% Pervious Area
0.340 5.66% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
7.0 75 0.0400 0.18 Sheet Flow, Sheet Flow
Grass: Short n= 0.150 P2= 2.28"
4.6 387 0.0400 1.40 Shallow Concentrated Flow, Shallow Concentrated Flow
Short Grass Pasture Kv= 7.0 fps
0.4 237 0.0100 10.72 64.33 Channel Flow, Roadside Swale
Area= 6.0 sf Perim= 3.0' r= 2.00'
n= 0.022 Earth, clean & straight
12.0 699 Total
Subcatchment 1S: Ex DA-1
Runoff
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)11
10
9
8
7
6
5
4
3
2
1
0
Charlotte 6-hr 2-yr
Rainfall=3.37"
Runoff Area=6.010 ac
Runoff Volume=0.492 af
Runoff Depth=0.98"
Flow Length=699'
Tc=12.0 min
CN=71
9.90 cfs
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
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Hydrograph for Subcatchment 1S: Ex DA-1
Time
(hours)
Precip.
(inches)
Excess
(inches)
Runoff
(cfs)
0.00 0.00 0.00 0.00
2.50 0.58 0.00 0.00
5.00 3.22 0.89 0.70
7.50 3.37 0.98 0.00
10.00 3.37 0.98 0.00
12.50 3.37 0.98 0.00
15.00 3.37 0.98 0.00
17.50 3.37 0.98 0.00
20.00 3.37 0.98 0.00
22.50 3.37 0.98 0.00
25.00 3.37 0.98 0.00
27.50 3.37 0.98 0.00
30.00 3.37 0.98 0.00
32.50 3.37 0.98 0.00
35.00 3.37 0.98 0.00
37.50 3.37 0.98 0.00
40.00 3.37 0.98 0.00
42.50 3.37 0.98 0.00
45.00 3.37 0.98 0.00
47.50 3.37 0.98 0.00
50.00 3.37 0.98 0.00
52.50 3.37 0.98 0.00
55.00 3.37 0.98 0.00
57.50 3.37 0.98 0.00
60.00 3.37 0.98 0.00
62.50 3.37 0.98 0.00
65.00 3.37 0.98 0.00
67.50 3.37 0.98 0.00
70.00 3.37 0.98 0.00
72.50 3.37 0.98 0.00
75.00 3.37 0.98 0.00
77.50 3.37 0.98 0.00
80.00 3.37 0.98 0.00
82.50 3.37 0.98 0.00
85.00 3.37 0.98 0.00
87.50 3.37 0.98 0.00
90.00 3.37 0.98 0.00
92.50 3.37 0.98 0.00
95.00 3.37 0.98 0.00
97.50 3.37 0.98 0.00
100.00 3.37 0.98 0.00
102.50 3.37 0.98 0.00
105.00 3.37 0.98 0.00
107.50 3.37 0.98 0.00
110.00 3.37 0.98 0.00
112.50 3.37 0.98 0.00
115.00 3.37 0.98 0.00
117.50 3.37 0.98 0.00
120.00 3.37 0.98 0.00
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 9HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Subcatchment 2S: Ex DA-2
Runoff = 9.82 cfs @ 3.29 hrs, Volume= 0.515 af, Depth= 0.93"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Charlotte 6-hr 2-yr Rainfall=3.37"
Area (ac) CN Description
6.445 69 50-75% Grass cover, Fair, HSG B
0.205 98 Paved parking, HSG B
6.650 70 Weighted Average
6.445 96.92% Pervious Area
0.205 3.08% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
7.8 75 0.0300 0.16 Sheet Flow, Sheet Flow
Grass: Short n= 0.150 P2= 2.28"
4.8 400 0.0400 1.40 Shallow Concentrated Flow, Shallow Concentrated Flow
Short Grass Pasture Kv= 7.0 fps
0.5 315 0.0150 11.56 69.34 Channel Flow, Channel Flow
Area= 6.0 sf Perim= 3.0' r= 2.00'
n= 0.025 Earth, clean & winding
13.1 790 Total
Subcatchment 2S: Ex DA-2
Runoff
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)10
9
8
7
6
5
4
3
2
1
0
Charlotte 6-hr 2-yr
Rainfall=3.37"
Runoff Area=6.650 ac
Runoff Volume=0.515 af
Runoff Depth=0.93"
Flow Length=790'
Tc=13.1 min
CN=70
9.82 cfs
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 10HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 2S: Ex DA-2
Time
(hours)
Precip.
(inches)
Excess
(inches)
Runoff
(cfs)
0.00 0.00 0.00 0.00
2.50 0.58 0.00 0.00
5.00 3.22 0.84 0.76
7.50 3.37 0.93 0.00
10.00 3.37 0.93 0.00
12.50 3.37 0.93 0.00
15.00 3.37 0.93 0.00
17.50 3.37 0.93 0.00
20.00 3.37 0.93 0.00
22.50 3.37 0.93 0.00
25.00 3.37 0.93 0.00
27.50 3.37 0.93 0.00
30.00 3.37 0.93 0.00
32.50 3.37 0.93 0.00
35.00 3.37 0.93 0.00
37.50 3.37 0.93 0.00
40.00 3.37 0.93 0.00
42.50 3.37 0.93 0.00
45.00 3.37 0.93 0.00
47.50 3.37 0.93 0.00
50.00 3.37 0.93 0.00
52.50 3.37 0.93 0.00
55.00 3.37 0.93 0.00
57.50 3.37 0.93 0.00
60.00 3.37 0.93 0.00
62.50 3.37 0.93 0.00
65.00 3.37 0.93 0.00
67.50 3.37 0.93 0.00
70.00 3.37 0.93 0.00
72.50 3.37 0.93 0.00
75.00 3.37 0.93 0.00
77.50 3.37 0.93 0.00
80.00 3.37 0.93 0.00
82.50 3.37 0.93 0.00
85.00 3.37 0.93 0.00
87.50 3.37 0.93 0.00
90.00 3.37 0.93 0.00
92.50 3.37 0.93 0.00
95.00 3.37 0.93 0.00
97.50 3.37 0.93 0.00
100.00 3.37 0.93 0.00
102.50 3.37 0.93 0.00
105.00 3.37 0.93 0.00
107.50 3.37 0.93 0.00
110.00 3.37 0.93 0.00
112.50 3.37 0.93 0.00
115.00 3.37 0.93 0.00
117.50 3.37 0.93 0.00
120.00 3.37 0.93 0.00
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 11HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Subcatchment 4S: Prop DA-1
[49] Hint: Tc<2dt may require smaller dt
Runoff = 14.43 cfs @ 3.15 hrs, Volume= 0.539 af, Depth= 2.07"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Charlotte 6-hr 2-yr Rainfall=3.37"
Area (ac) CN Description
2.170 98 Paved parking, HSG B
0.960 61 >75% Grass cover, Good, HSG B
3.130 87 Weighted Average
0.960 30.67% Pervious Area
2.170 69.33% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, ToC
Subcatchment 4S: Prop DA-1
Runoff
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Charlotte 6-hr 2-yr
Rainfall=3.37"
Runoff Area=3.130 ac
Runoff Volume=0.539 af
Runoff Depth=2.07"
Tc=5.0 min
CN=87
14.43 cfs
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 12HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 4S: Prop DA-1
Time
(hours)
Precip.
(inches)
Excess
(inches)
Runoff
(cfs)
0.00 0.00 0.00 0.00
2.50 0.58 0.05 0.42
5.00 3.22 1.93 0.50
7.50 3.37 2.07 0.00
10.00 3.37 2.07 0.00
12.50 3.37 2.07 0.00
15.00 3.37 2.07 0.00
17.50 3.37 2.07 0.00
20.00 3.37 2.07 0.00
22.50 3.37 2.07 0.00
25.00 3.37 2.07 0.00
27.50 3.37 2.07 0.00
30.00 3.37 2.07 0.00
32.50 3.37 2.07 0.00
35.00 3.37 2.07 0.00
37.50 3.37 2.07 0.00
40.00 3.37 2.07 0.00
42.50 3.37 2.07 0.00
45.00 3.37 2.07 0.00
47.50 3.37 2.07 0.00
50.00 3.37 2.07 0.00
52.50 3.37 2.07 0.00
55.00 3.37 2.07 0.00
57.50 3.37 2.07 0.00
60.00 3.37 2.07 0.00
62.50 3.37 2.07 0.00
65.00 3.37 2.07 0.00
67.50 3.37 2.07 0.00
70.00 3.37 2.07 0.00
72.50 3.37 2.07 0.00
75.00 3.37 2.07 0.00
77.50 3.37 2.07 0.00
80.00 3.37 2.07 0.00
82.50 3.37 2.07 0.00
85.00 3.37 2.07 0.00
87.50 3.37 2.07 0.00
90.00 3.37 2.07 0.00
92.50 3.37 2.07 0.00
95.00 3.37 2.07 0.00
97.50 3.37 2.07 0.00
100.00 3.37 2.07 0.00
102.50 3.37 2.07 0.00
105.00 3.37 2.07 0.00
107.50 3.37 2.07 0.00
110.00 3.37 2.07 0.00
112.50 3.37 2.07 0.00
115.00 3.37 2.07 0.00
117.50 3.37 2.07 0.00
120.00 3.37 2.07 0.00
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 13HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Subcatchment 5S: Prop DA-2
[49] Hint: Tc<2dt may require smaller dt
Runoff = 31.55 cfs @ 3.16 hrs, Volume= 1.171 af, Depth= 1.90"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Charlotte 6-hr 2-yr Rainfall=3.37"
Area (ac) CN Description
2.560 61 >75% Grass cover, Good, HSG B
1.600 98 Roofs, HSG B
2.870 98 Paved parking, HSG B
0.350 98 Water Surface, 0% imp, HSG B
7.380 85 Weighted Average
2.910 39.43% Pervious Area
4.470 60.57% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, Direct Entry
Subcatchment 5S: Prop DA-2
Runoff
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
Charlotte 6-hr 2-yr
Rainfall=3.37"
Runoff Area=7.380 ac
Runoff Volume=1.171 af
Runoff Depth=1.90"
Tc=5.0 min
CN=85
31.55 cfs
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 14HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 5S: Prop DA-2
Time
(hours)
Precip.
(inches)
Excess
(inches)
Runoff
(cfs)
0.00 0.00 0.00 0.00
2.50 0.58 0.03 0.70
5.00 3.22 1.77 1.14
7.50 3.37 1.90 0.00
10.00 3.37 1.90 0.00
12.50 3.37 1.90 0.00
15.00 3.37 1.90 0.00
17.50 3.37 1.90 0.00
20.00 3.37 1.90 0.00
22.50 3.37 1.90 0.00
25.00 3.37 1.90 0.00
27.50 3.37 1.90 0.00
30.00 3.37 1.90 0.00
32.50 3.37 1.90 0.00
35.00 3.37 1.90 0.00
37.50 3.37 1.90 0.00
40.00 3.37 1.90 0.00
42.50 3.37 1.90 0.00
45.00 3.37 1.90 0.00
47.50 3.37 1.90 0.00
50.00 3.37 1.90 0.00
52.50 3.37 1.90 0.00
55.00 3.37 1.90 0.00
57.50 3.37 1.90 0.00
60.00 3.37 1.90 0.00
62.50 3.37 1.90 0.00
65.00 3.37 1.90 0.00
67.50 3.37 1.90 0.00
70.00 3.37 1.90 0.00
72.50 3.37 1.90 0.00
75.00 3.37 1.90 0.00
77.50 3.37 1.90 0.00
80.00 3.37 1.90 0.00
82.50 3.37 1.90 0.00
85.00 3.37 1.90 0.00
87.50 3.37 1.90 0.00
90.00 3.37 1.90 0.00
92.50 3.37 1.90 0.00
95.00 3.37 1.90 0.00
97.50 3.37 1.90 0.00
100.00 3.37 1.90 0.00
102.50 3.37 1.90 0.00
105.00 3.37 1.90 0.00
107.50 3.37 1.90 0.00
110.00 3.37 1.90 0.00
112.50 3.37 1.90 0.00
115.00 3.37 1.90 0.00
117.50 3.37 1.90 0.00
120.00 3.37 1.90 0.00
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 15HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Subcatchment 6S: Prop DA-3
[49] Hint: Tc<2dt may require smaller dt
Runoff = 2.98 cfs @ 3.17 hrs, Volume= 0.113 af, Depth= 1.04"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Charlotte 6-hr 2-yr Rainfall=3.37"
Area (ac) CN Description
0.397 98 Paved parking, HSG B
0.913 61 >75% Grass cover, Good, HSG B
1.310 72 Weighted Average
0.913 69.69% Pervious Area
0.397 30.31% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, Time of Concentration
Subcatchment 6S: Prop DA-3
Runoff
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)3
2
1
0
Charlotte 6-hr 2-yr
Rainfall=3.37"
Runoff Area=1.310 ac
Runoff Volume=0.113 af
Runoff Depth=1.04"
Tc=5.0 min
CN=72
2.98 cfs
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 16HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 6S: Prop DA-3
Time
(hours)
Precip.
(inches)
Excess
(inches)
Runoff
(cfs)
0.00 0.00 0.00 0.00
2.50 0.58 0.00 0.00
5.00 3.22 0.94 0.15
7.50 3.37 1.04 0.00
10.00 3.37 1.04 0.00
12.50 3.37 1.04 0.00
15.00 3.37 1.04 0.00
17.50 3.37 1.04 0.00
20.00 3.37 1.04 0.00
22.50 3.37 1.04 0.00
25.00 3.37 1.04 0.00
27.50 3.37 1.04 0.00
30.00 3.37 1.04 0.00
32.50 3.37 1.04 0.00
35.00 3.37 1.04 0.00
37.50 3.37 1.04 0.00
40.00 3.37 1.04 0.00
42.50 3.37 1.04 0.00
45.00 3.37 1.04 0.00
47.50 3.37 1.04 0.00
50.00 3.37 1.04 0.00
52.50 3.37 1.04 0.00
55.00 3.37 1.04 0.00
57.50 3.37 1.04 0.00
60.00 3.37 1.04 0.00
62.50 3.37 1.04 0.00
65.00 3.37 1.04 0.00
67.50 3.37 1.04 0.00
70.00 3.37 1.04 0.00
72.50 3.37 1.04 0.00
75.00 3.37 1.04 0.00
77.50 3.37 1.04 0.00
80.00 3.37 1.04 0.00
82.50 3.37 1.04 0.00
85.00 3.37 1.04 0.00
87.50 3.37 1.04 0.00
90.00 3.37 1.04 0.00
92.50 3.37 1.04 0.00
95.00 3.37 1.04 0.00
97.50 3.37 1.04 0.00
100.00 3.37 1.04 0.00
102.50 3.37 1.04 0.00
105.00 3.37 1.04 0.00
107.50 3.37 1.04 0.00
110.00 3.37 1.04 0.00
112.50 3.37 1.04 0.00
115.00 3.37 1.04 0.00
117.50 3.37 1.04 0.00
120.00 3.37 1.04 0.00
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 17HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Subcatchment 10S: DA-2 Bypass A
[49] Hint: Tc<2dt may require smaller dt
Runoff = 6.53 cfs @ 3.16 hrs, Volume= 0.244 af, Depth= 1.21"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Charlotte 6-hr 2-yr Rainfall=3.37"
Area (ac) CN Description
* 2.420 75
2.420 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 10S: DA-2 Bypass A
Runoff
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)7
6
5
4
3
2
1
0
Charlotte 6-hr 2-yr
Rainfall=3.37"
Runoff Area=2.420 ac
Runoff Volume=0.244 af
Runoff Depth=1.21"
Tc=5.0 min
CN=75
6.53 cfs
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 18HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 10S: DA-2 Bypass A
Time
(hours)
Precip.
(inches)
Excess
(inches)
Runoff
(cfs)
0.00 0.00 0.00 0.00
2.50 0.58 0.00 0.00
5.00 3.22 1.11 0.30
7.50 3.37 1.21 0.00
10.00 3.37 1.21 0.00
12.50 3.37 1.21 0.00
15.00 3.37 1.21 0.00
17.50 3.37 1.21 0.00
20.00 3.37 1.21 0.00
22.50 3.37 1.21 0.00
25.00 3.37 1.21 0.00
27.50 3.37 1.21 0.00
30.00 3.37 1.21 0.00
32.50 3.37 1.21 0.00
35.00 3.37 1.21 0.00
37.50 3.37 1.21 0.00
40.00 3.37 1.21 0.00
42.50 3.37 1.21 0.00
45.00 3.37 1.21 0.00
47.50 3.37 1.21 0.00
50.00 3.37 1.21 0.00
52.50 3.37 1.21 0.00
55.00 3.37 1.21 0.00
57.50 3.37 1.21 0.00
60.00 3.37 1.21 0.00
62.50 3.37 1.21 0.00
65.00 3.37 1.21 0.00
67.50 3.37 1.21 0.00
70.00 3.37 1.21 0.00
72.50 3.37 1.21 0.00
75.00 3.37 1.21 0.00
77.50 3.37 1.21 0.00
80.00 3.37 1.21 0.00
82.50 3.37 1.21 0.00
85.00 3.37 1.21 0.00
87.50 3.37 1.21 0.00
90.00 3.37 1.21 0.00
92.50 3.37 1.21 0.00
95.00 3.37 1.21 0.00
97.50 3.37 1.21 0.00
100.00 3.37 1.21 0.00
102.50 3.37 1.21 0.00
105.00 3.37 1.21 0.00
107.50 3.37 1.21 0.00
110.00 3.37 1.21 0.00
112.50 3.37 1.21 0.00
115.00 3.37 1.21 0.00
117.50 3.37 1.21 0.00
120.00 3.37 1.21 0.00
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 19HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Pond 4P: Wet Pond 1
Inflow Area = 3.130 ac, 69.33% Impervious, Inflow Depth = 2.07" for 2-yr event
Inflow = 14.43 cfs @ 3.15 hrs, Volume= 0.539 af
Outflow = 2.82 cfs @ 3.47 hrs, Volume= 0.536 af, Atten= 80%, Lag= 18.7 min
Primary = 2.82 cfs @ 3.47 hrs, Volume= 0.536 af
Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Peak Elev= 789.07' @ 3.47 hrs Surf.Area= 9,948 sf Storage= 13,702 cf
Plug-Flow detention time= 722.8 min calculated for 0.536 af (99% of inflow)
Center-of-Mass det. time= 722.0 min ( 932.5 - 210.6 )
Volume Invert Avail.Storage Storage Description
#1 787.50' 48,545 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic-feet) (cubic-feet)
787.50 7,516 0 0
789.00 9,858 13,031 13,031
790.00 11,185 10,522 23,552
791.00 12,500 11,843 35,395
792.00 13,800 13,150 48,545
Device Routing Invert Outlet Devices
#1 Primary 787.50'24.0" Round Culvert
L= 23.7' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 787.50' / 787.38' S= 0.0051 '/' Cc= 0.900
n= 0.013, Flow Area= 3.14 sf
#2 Device 1 787.50'1.5" Vert. Orifice/Grate C= 0.600
#3 Device 1 788.50'24.0" W x 8.0" H Vert. Orifice/Grate C= 0.600
#4 Device 1 790.50'16.0' long Sharp-Crested Vee/Trap Weir Cv= 2.62 (C= 3.28)
#5 Secondary 791.00'20.0' long x 10.0' breadth Broad-Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64
Primary OutFlow Max=2.81 cfs @ 3.47 hrs HW=789.07' (Free Discharge)
1=Culvert (Passes 2.81 cfs of 8.30 cfs potential flow)
2=Orifice/Grate (Orifice Controls 0.07 cfs @ 5.91 fps)
3=Orifice/Grate (Orifice Controls 2.74 cfs @ 2.42 fps)
4=Sharp-Crested Vee/Trap Weir ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=787.50' (Free Discharge)
5=Broad-Crested Rectangular Weir ( Controls 0.00 cfs)
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 20HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Pond 4P: Wet Pond 1
Inflow
Outflow
Primary
Secondary
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Inflow Area=3.130 ac
Peak Elev=789.07'
Storage=13,702 cf
14.43 cfs
2.82 cfs
2.82 cfs
0.00 cfs
Pond 4P: Wet Pond 1
Total
Primary
Secondary
Stage-Discharge
Discharge (cfs)
80706050403020100Elevation (feet)792
791
790
789
788
Culvert + Orifice/Grate
Orifice/Grate
Sharp-Crested Vee/Trap Weir
Broad-Crested Rectangular Weir
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
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Pond 4P: Wet Pond 1
Surface
Storage
Stage-Area-Storage
Storage (cubic-feet)
45,00040,00035,00030,00025,00020,00015,00010,0005,0000
Surface/Horizontal/Wetted Area (sq-ft)
13,00012,00011,00010,0009,0008,0007,0006,0005,0004,0003,0002,0001,0000
Elevation (feet)792
791
790
789
788
Custom Stage Data
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 22HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Pond 4P: Wet Pond 1
Time
(hours)
Inflow
(cfs)
Storage
(cubic-feet)
Elevation
(feet)
Outflow
(cfs)
Primary
(cfs)
Secondary
(cfs)
0.00 0.00 0 787.50 0.00 0.00 0.00
2.50 0.42 392 787.55 0.00 0.00 0.00
5.00 0.50 10,504 788.74 0.81 0.81 0.00
7.50 0.00 8,622 788.54 0.10 0.10 0.00
10.00 0.00 8,025 788.47 0.06 0.06 0.00
12.50 0.00 7,527 788.41 0.05 0.05 0.00
15.00 0.00 7,044 788.36 0.05 0.05 0.00
17.50 0.00 6,577 788.31 0.05 0.05 0.00
20.00 0.00 6,126 788.26 0.05 0.05 0.00
22.50 0.00 5,691 788.21 0.05 0.05 0.00
25.00 0.00 5,273 788.16 0.05 0.05 0.00
27.50 0.00 4,872 788.11 0.04 0.04 0.00
30.00 0.00 4,487 788.06 0.04 0.04 0.00
32.50 0.00 4,119 788.02 0.04 0.04 0.00
35.00 0.00 3,768 787.98 0.04 0.04 0.00
37.50 0.00 3,434 787.94 0.04 0.04 0.00
40.00 0.00 3,117 787.90 0.03 0.03 0.00
42.50 0.00 2,818 787.86 0.03 0.03 0.00
45.00 0.00 2,536 787.83 0.03 0.03 0.00
47.50 0.00 2,272 787.79 0.03 0.03 0.00
50.00 0.00 2,025 787.76 0.03 0.03 0.00
52.50 0.00 1,797 787.73 0.02 0.02 0.00
55.00 0.00 1,586 787.71 0.02 0.02 0.00
57.50 0.00 1,394 787.68 0.02 0.02 0.00
60.00 0.00 1,220 787.66 0.02 0.02 0.00
62.50 0.00 1,064 787.64 0.02 0.02 0.00
65.00 0.00 927 787.62 0.01 0.01 0.00
67.50 0.00 810 787.61 0.01 0.01 0.00
70.00 0.00 711 787.59 0.01 0.01 0.00
72.50 0.00 627 787.58 0.01 0.01 0.00
75.00 0.00 556 787.57 0.01 0.01 0.00
77.50 0.00 497 787.57 0.01 0.01 0.00
80.00 0.00 448 787.56 0.01 0.01 0.00
82.50 0.00 406 787.55 0.00 0.00 0.00
85.00 0.00 372 787.55 0.00 0.00 0.00
87.50 0.00 343 787.55 0.00 0.00 0.00
90.00 0.00 318 787.54 0.00 0.00 0.00
92.50 0.00 295 787.54 0.00 0.00 0.00
95.00 0.00 273 787.54 0.00 0.00 0.00
97.50 0.00 253 787.53 0.00 0.00 0.00
100.00 0.00 234 787.53 0.00 0.00 0.00
102.50 0.00 217 787.53 0.00 0.00 0.00
105.00 0.00 201 787.53 0.00 0.00 0.00
107.50 0.00 187 787.52 0.00 0.00 0.00
110.00 0.00 173 787.52 0.00 0.00 0.00
112.50 0.00 160 787.52 0.00 0.00 0.00
115.00 0.00 149 787.52 0.00 0.00 0.00
117.50 0.00 138 787.52 0.00 0.00 0.00
120.00 0.00 128 787.52 0.00 0.00 0.00
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 23HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 4P: Wet Pond 1
Elevation
(feet)
Discharge
(cfs)
Primary
(cfs)
Secondary
(cfs)
787.50 0.00 0.00 0.00
787.55 0.00 0.00 0.00
787.60 0.01 0.01 0.00
787.65 0.02 0.02 0.00
787.70 0.02 0.02 0.00
787.75 0.03 0.03 0.00
787.80 0.03 0.03 0.00
787.85 0.03 0.03 0.00
787.90 0.03 0.03 0.00
787.95 0.04 0.04 0.00
788.00 0.04 0.04 0.00
788.05 0.04 0.04 0.00
788.10 0.04 0.04 0.00
788.15 0.05 0.05 0.00
788.20 0.05 0.05 0.00
788.25 0.05 0.05 0.00
788.30 0.05 0.05 0.00
788.35 0.05 0.05 0.00
788.40 0.05 0.05 0.00
788.45 0.06 0.06 0.00
788.50 0.06 0.06 0.00
788.55 0.13 0.13 0.00
788.60 0.26 0.26 0.00
788.65 0.43 0.43 0.00
788.70 0.64 0.64 0.00
788.75 0.87 0.87 0.00
788.80 1.12 1.12 0.00
788.85 1.40 1.40 0.00
788.90 1.69 1.69 0.00
788.95 2.01 2.01 0.00
789.00 2.34 2.34 0.00
789.05 2.69 2.69 0.00
789.10 3.06 3.06 0.00
789.15 3.44 3.44 0.00
789.20 3.80 3.80 0.00
789.25 4.09 4.09 0.00
789.30 4.36 4.36 0.00
789.35 4.61 4.61 0.00
789.40 4.84 4.84 0.00
789.45 5.06 5.06 0.00
789.50 5.27 5.27 0.00
789.55 5.47 5.47 0.00
789.60 5.66 5.66 0.00
789.65 5.85 5.85 0.00
789.70 6.03 6.03 0.00
789.75 6.20 6.20 0.00
789.80 6.37 6.37 0.00
789.85 6.53 6.53 0.00
789.90 6.69 6.69 0.00
789.95 6.85 6.85 0.00
790.00 7.00 7.00 0.00
790.05 7.15 7.15 0.00
Elevation
(feet)
Discharge
(cfs)
Primary
(cfs)
Secondary
(cfs)
790.10 7.30 7.30 0.00
790.15 7.44 7.44 0.00
790.20 7.58 7.58 0.00
790.25 7.72 7.72 0.00
790.30 7.86 7.86 0.00
790.35 7.99 7.99 0.00
790.40 8.12 8.12 0.00
790.45 8.25 8.25 0.00
790.50 8.38 8.38 0.00
790.55 9.09 9.09 0.00
790.60 10.28 10.28 0.00
790.65 11.79 11.79 0.00
790.70 13.55 13.55 0.00
790.75 15.53 15.53 0.00
790.80 17.71 17.71 0.00
790.85 20.06 20.06 0.00
790.90 22.58 22.58 0.00
790.95 23.58 23.58 0.00
791.00 23.92 23.92 0.00
791.05 24.71 24.16 0.56
791.10 25.97 24.39 1.57
791.15 27.52 24.62 2.89
791.20 29.31 24.86 4.45
791.25 31.35 25.08 6.27
791.30 33.61 25.31 8.30
791.35 36.07 25.54 10.53
791.40 38.71 25.76 12.95
791.45 41.65 25.98 15.67
791.50 44.80 26.20 18.60
791.55 48.16 26.42 21.74
791.60 51.73 26.63 25.10
791.65 55.12 26.85 28.27
791.70 58.63 27.06 31.57
791.75 62.25 27.27 34.98
791.80 65.98 27.48 38.50
791.85 69.81 27.69 42.12
791.90 73.74 27.89 45.85
791.95 77.77 28.10 49.68
792.00 81.90 28.30 53.60
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 24HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 4P: Wet Pond 1
Elevation
(feet)
Surface
(sq-ft)
Storage
(cubic-feet)
787.50 7,516 0
787.55 7,594 378
787.60 7,672 759
787.65 7,750 1,145
787.70 7,828 1,534
787.75 7,906 1,928
787.80 7,984 2,325
787.85 8,062 2,726
787.90 8,141 3,131
787.95 8,219 3,540
788.00 8,297 3,953
788.05 8,375 4,370
788.10 8,453 4,791
788.15 8,531 5,215
788.20 8,609 5,644
788.25 8,687 6,076
788.30 8,765 6,512
788.35 8,843 6,953
788.40 8,921 7,397
788.45 8,999 7,845
788.50 9,077 8,297
788.55 9,155 8,752
788.60 9,233 9,212
788.65 9,312 9,676
788.70 9,390 10,143
788.75 9,468 10,615
788.80 9,546 11,090
788.85 9,624 11,569
788.90 9,702 12,053
788.95 9,780 12,540
789.00 9,858 13,031
789.05 9,924 13,525
789.10 9,991 14,023
789.15 10,057 14,524
789.20 10,123 15,029
789.25 10,190 15,536
789.30 10,256 16,048
789.35 10,322 16,562
789.40 10,389 17,080
789.45 10,455 17,601
789.50 10,522 18,125
789.55 10,588 18,653
789.60 10,654 19,184
789.65 10,721 19,719
789.70 10,787 20,256
789.75 10,853 20,797
789.80 10,920 21,342
789.85 10,986 21,889
789.90 11,052 22,440
789.95 11,119 22,994
790.00 11,185 23,552
790.05 11,251 24,113
Elevation
(feet)
Surface
(sq-ft)
Storage
(cubic-feet)
790.10 11,317 24,677
790.15 11,382 25,245
790.20 11,448 25,815
790.25 11,514 26,389
790.30 11,579 26,967
790.35 11,645 27,547
790.40 11,711 28,131
790.45 11,777 28,718
790.50 11,843 29,309
790.55 11,908 29,903
790.60 11,974 30,500
790.65 12,040 31,100
790.70 12,106 31,704
790.75 12,171 32,311
790.80 12,237 32,921
790.85 12,303 33,534
790.90 12,368 34,151
790.95 12,434 34,771
791.00 12,500 35,395
791.05 12,565 36,021
791.10 12,630 36,651
791.15 12,695 37,284
791.20 12,760 37,921
791.25 12,825 38,560
791.30 12,890 39,203
791.35 12,955 39,849
791.40 13,020 40,498
791.45 13,085 41,151
791.50 13,150 41,807
791.55 13,215 42,466
791.60 13,280 43,129
791.65 13,345 43,794
791.70 13,410 44,463
791.75 13,475 45,135
791.80 13,540 45,810
791.85 13,605 46,489
791.90 13,670 47,171
791.95 13,735 47,856
792.00 13,800 48,545
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 25HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Pond 5P: Wet Pond 2
Inflow Area = 7.380 ac, 60.57% Impervious, Inflow Depth = 1.90" for 2-yr event
Inflow = 31.55 cfs @ 3.16 hrs, Volume= 1.171 af
Outflow = 5.02 cfs @ 3.57 hrs, Volume= 1.164 af, Atten= 84%, Lag= 24.9 min
Primary = 5.02 cfs @ 3.57 hrs, Volume= 1.164 af
Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Peak Elev= 779.22' @ 3.57 hrs Surf.Area= 15,834 sf Storage= 30,134 cf
Plug-Flow detention time= 666.3 min calculated for 1.164 af (99% of inflow)
Center-of-Mass det. time= 665.5 min ( 877.8 - 212.3 )
Volume Invert Avail.Storage Storage Description
#1 777.00' 82,420 cf Custom Stage Data (Irregular) Listed below (Recalc)
Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area
(feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft)
777.00 11,324 654.0 0 0 11,324
778.00 13,317 673.0 12,307 12,307 13,437
779.00 15,366 692.0 14,329 26,636 15,611
780.00 17,509 713.0 16,426 43,062 18,062
781.00 19,675 731.0 18,581 61,644 20,253
782.00 21,898 750.0 20,777 82,420 22,611
Device Routing Invert Outlet Devices
#1 Primary 776.50'24.0" Round Culvert L= 77.6' Ke= 0.500
Inlet / Outlet Invert= 776.50' / 775.72' S= 0.0101 '/' Cc= 0.900
n= 0.013, Flow Area= 3.14 sf
#2 Device 1 777.00'2.0" Vert. Orifice/Grate C= 0.600
#3 Device 1 778.30'24.0" W x 8.0" H Vert. Orifice/Grate C= 0.600
#4 Primary 780.50'16.0' long Sharp-Crested Vee/Trap Weir Cv= 2.62 (C= 3.28)
#5 Secondary 780.75'12.0' long Sharp-Crested Vee/Trap Weir Cv= 2.62 (C= 3.28)
Primary OutFlow Max=5.02 cfs @ 3.57 hrs HW=779.22' (Free Discharge)
1=Culvert (Passes 5.02 cfs of 19.68 cfs potential flow)
2=Orifice/Grate (Orifice Controls 0.15 cfs @ 7.04 fps)
3=Orifice/Grate (Orifice Controls 4.86 cfs @ 3.65 fps)
4=Sharp-Crested Vee/Trap Weir ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=777.00' (Free Discharge)
5=Sharp-Crested Vee/Trap Weir ( Controls 0.00 cfs)
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 26HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Pond 5P: Wet Pond 2
Inflow
Outflow
Primary
Secondary
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
Inflow Area=7.380 ac
Peak Elev=779.22'
Storage=30,134 cf
31.55 cfs
5.02 cfs
5.02 cfs
0.00 cfs
Pond 5P: Wet Pond 2
Total
Primary
Secondary
Stage-Discharge
Discharge (cfs)
160140120100806040200Elevation (feet)782
781
780
779
778
777
Orifice/Grate
Orifice/Grate
Sharp-Crested Vee/Trap Weir Sharp-Crested Vee/Trap Weir
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 27HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Pond 5P: Wet Pond 2
Surface
Storage
Stage-Area-Storage
Storage (cubic-feet)
80,00070,00060,00050,00040,00030,00020,00010,0000
Surface/Horizontal/Wetted Area (sq-ft)
20,00018,00016,00014,00012,00010,0008,0006,0004,0002,0000
Elevation (feet)782
781
780
779
778
777
Custom Stage Data
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 28HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Pond 5P: Wet Pond 2
Time
(hours)
Inflow
(cfs)
Storage
(cubic-feet)
Elevation
(feet)
Outflow
(cfs)
Primary
(cfs)
Secondary
(cfs)
0.00 0.00 0 777.00 0.00 0.00 0.00
2.50 0.70 502 777.04 0.00 0.00 0.00
5.00 1.14 22,808 778.75 2.05 2.05 0.00
7.50 0.00 17,609 778.39 0.29 0.29 0.00
10.00 0.00 16,144 778.28 0.12 0.12 0.00
12.50 0.00 15,126 778.21 0.11 0.11 0.00
15.00 0.00 14,139 778.14 0.11 0.11 0.00
17.50 0.00 13,186 778.07 0.10 0.10 0.00
20.00 0.00 12,265 778.00 0.10 0.10 0.00
22.50 0.00 11,379 777.93 0.10 0.10 0.00
25.00 0.00 10,526 777.86 0.09 0.09 0.00
27.50 0.00 9,707 777.80 0.09 0.09 0.00
30.00 0.00 8,924 777.74 0.09 0.09 0.00
32.50 0.00 8,175 777.68 0.08 0.08 0.00
35.00 0.00 7,461 777.63 0.08 0.08 0.00
37.50 0.00 6,783 777.57 0.07 0.07 0.00
40.00 0.00 6,141 777.52 0.07 0.07 0.00
42.50 0.00 5,535 777.47 0.07 0.07 0.00
45.00 0.00 4,966 777.42 0.06 0.06 0.00
47.50 0.00 4,433 777.38 0.06 0.06 0.00
50.00 0.00 3,938 777.34 0.05 0.05 0.00
52.50 0.00 3,480 777.30 0.05 0.05 0.00
55.00 0.00 3,060 777.26 0.04 0.04 0.00
57.50 0.00 2,677 777.23 0.04 0.04 0.00
60.00 0.00 2,333 777.20 0.04 0.04 0.00
62.50 0.00 2,027 777.18 0.03 0.03 0.00
65.00 0.00 1,759 777.15 0.03 0.03 0.00
67.50 0.00 1,529 777.13 0.02 0.02 0.00
70.00 0.00 1,340 777.12 0.02 0.02 0.00
72.50 0.00 1,185 777.10 0.02 0.02 0.00
75.00 0.00 1,056 777.09 0.01 0.01 0.00
77.50 0.00 947 777.08 0.01 0.01 0.00
80.00 0.00 855 777.07 0.01 0.01 0.00
82.50 0.00 776 777.07 0.01 0.01 0.00
85.00 0.00 710 777.06 0.01 0.01 0.00
87.50 0.00 654 777.06 0.01 0.01 0.00
90.00 0.00 606 777.05 0.00 0.00 0.00
92.50 0.00 565 777.05 0.00 0.00 0.00
95.00 0.00 529 777.05 0.00 0.00 0.00
97.50 0.00 495 777.04 0.00 0.00 0.00
100.00 0.00 463 777.04 0.00 0.00 0.00
102.50 0.00 434 777.04 0.00 0.00 0.00
105.00 0.00 406 777.04 0.00 0.00 0.00
107.50 0.00 380 777.03 0.00 0.00 0.00
110.00 0.00 355 777.03 0.00 0.00 0.00
112.50 0.00 333 777.03 0.00 0.00 0.00
115.00 0.00 311 777.03 0.00 0.00 0.00
117.50 0.00 291 777.03 0.00 0.00 0.00
120.00 0.00 273 777.02 0.00 0.00 0.00
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 29HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 5P: Wet Pond 2
Elevation
(feet)
Discharge
(cfs)
Primary
(cfs)
Secondary
(cfs)
777.00 0.00 0.00 0.00
777.05 0.00 0.00 0.00
777.10 0.01 0.01 0.00
777.15 0.03 0.03 0.00
777.20 0.04 0.04 0.00
777.25 0.04 0.04 0.00
777.30 0.05 0.05 0.00
777.35 0.05 0.05 0.00
777.40 0.06 0.06 0.00
777.45 0.06 0.06 0.00
777.50 0.07 0.07 0.00
777.55 0.07 0.07 0.00
777.60 0.08 0.08 0.00
777.65 0.08 0.08 0.00
777.70 0.08 0.08 0.00
777.75 0.09 0.09 0.00
777.80 0.09 0.09 0.00
777.85 0.09 0.09 0.00
777.90 0.09 0.09 0.00
777.95 0.10 0.10 0.00
778.00 0.10 0.10 0.00
778.05 0.10 0.10 0.00
778.10 0.11 0.11 0.00
778.15 0.11 0.11 0.00
778.20 0.11 0.11 0.00
778.25 0.11 0.11 0.00
778.30 0.12 0.12 0.00
778.35 0.19 0.19 0.00
778.40 0.32 0.32 0.00
778.45 0.50 0.50 0.00
778.50 0.70 0.70 0.00
778.55 0.93 0.93 0.00
778.60 1.18 1.18 0.00
778.65 1.46 1.46 0.00
778.70 1.76 1.76 0.00
778.75 2.07 2.07 0.00
778.80 2.41 2.41 0.00
778.85 2.76 2.76 0.00
778.90 3.13 3.13 0.00
778.95 3.51 3.51 0.00
779.00 3.87 3.87 0.00
779.05 4.16 4.16 0.00
779.10 4.43 4.43 0.00
779.15 4.68 4.68 0.00
779.20 4.91 4.91 0.00
779.25 5.13 5.13 0.00
779.30 5.34 5.34 0.00
779.35 5.54 5.54 0.00
779.40 5.74 5.74 0.00
779.45 5.92 5.92 0.00
779.50 6.10 6.10 0.00
779.55 6.28 6.28 0.00
Elevation
(feet)
Discharge
(cfs)
Primary
(cfs)
Secondary
(cfs)
779.60 6.45 6.45 0.00
779.65 6.61 6.61 0.00
779.70 6.77 6.77 0.00
779.75 6.93 6.93 0.00
779.80 7.08 7.08 0.00
779.85 7.23 7.23 0.00
779.90 7.38 7.38 0.00
779.95 7.52 7.52 0.00
780.00 7.67 7.67 0.00
780.05 7.80 7.80 0.00
780.10 7.94 7.94 0.00
780.15 8.07 8.07 0.00
780.20 8.21 8.21 0.00
780.25 8.34 8.34 0.00
780.30 8.46 8.46 0.00
780.35 8.59 8.59 0.00
780.40 8.71 8.71 0.00
780.45 8.83 8.83 0.00
780.50 8.95 8.95 0.00
780.55 9.66 9.66 0.00
780.60 10.85 10.85 0.00
780.65 12.35 12.35 0.00
780.70 14.11 14.11 0.00
780.75 16.08 16.08 0.00
780.80 18.69 18.25 0.44
780.85 21.85 20.60 1.24
780.90 25.40 23.12 2.28
780.95 29.30 25.79 3.52
781.00 33.51 28.60 4.91
781.05 38.01 31.56 6.46
781.10 42.78 34.64 8.14
781.15 47.79 37.85 9.94
781.20 53.04 41.18 11.86
781.25 58.52 44.63 13.89
781.30 64.22 48.19 16.03
781.35 70.12 51.86 18.26
781.40 76.23 55.63 20.60
781.45 82.52 59.51 23.02
781.50 89.01 63.48 25.53
781.55 95.68 67.56 28.12
781.60 102.53 71.73 30.80
781.65 109.55 75.99 33.55
781.70 116.73 80.34 36.39
781.75 124.09 84.79 39.30
781.80 131.60 89.32 42.28
781.85 139.27 93.93 45.34
781.90 147.10 98.63 48.47
781.95 155.07 103.41 51.66
782.00 163.20 108.27 54.92
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 30HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 5P: Wet Pond 2
Elevation
(feet)
Surface
(sq-ft)
Storage
(cubic-feet)
777.00 11,324 0
777.05 11,420 569
777.10 11,516 1,142
777.15 11,613 1,720
777.20 11,710 2,303
777.25 11,807 2,891
777.30 11,905 3,484
777.35 12,003 4,082
777.40 12,102 4,684
777.45 12,201 5,292
777.50 12,300 5,904
777.55 12,400 6,522
777.60 12,500 7,144
777.65 12,601 7,772
777.70 12,702 8,405
777.75 12,804 9,042
777.80 12,905 9,685
777.85 13,008 10,333
777.90 13,110 10,986
777.95 13,214 11,644
778.00 13,317 12,307
778.05 13,416 12,975
778.10 13,515 13,649
778.15 13,615 14,327
778.20 13,715 15,010
778.25 13,816 15,698
778.30 13,916 16,392
778.35 14,017 17,090
778.40 14,119 17,793
778.45 14,221 18,502
778.50 14,323 19,216
778.55 14,426 19,934
778.60 14,529 20,658
778.65 14,632 21,387
778.70 14,736 22,121
778.75 14,840 22,861
778.80 14,944 23,605
778.85 15,049 24,355
778.90 15,155 25,110
778.95 15,260 25,871
779.00 15,366 26,636
779.05 15,470 27,407
779.10 15,574 28,183
779.15 15,679 28,965
779.20 15,783 29,751
779.25 15,889 30,543
779.30 15,994 31,340
779.35 16,100 32,142
779.40 16,206 32,950
779.45 16,313 33,763
779.50 16,420 34,581
779.55 16,527 35,405
Elevation
(feet)
Surface
(sq-ft)
Storage
(cubic-feet)
779.60 16,635 36,234
779.65 16,743 37,069
779.70 16,851 37,908
779.75 16,960 38,754
779.80 17,069 39,604
779.85 17,179 40,461
779.90 17,288 41,322
779.95 17,399 42,189
780.00 17,509 43,062
780.05 17,614 43,940
780.10 17,720 44,824
780.15 17,826 45,712
780.20 17,932 46,606
780.25 18,039 47,505
780.30 18,146 48,410
780.35 18,253 49,320
780.40 18,360 50,235
780.45 18,468 51,156
780.50 18,576 52,082
780.55 18,685 53,014
780.60 18,793 53,951
780.65 18,903 54,893
780.70 19,012 55,841
780.75 19,122 56,794
780.80 19,232 57,753
780.85 19,342 58,717
780.90 19,453 59,687
780.95 19,564 60,663
781.00 19,675 61,644
781.05 19,783 62,630
781.10 19,892 63,622
781.15 20,001 64,619
781.20 20,110 65,622
781.25 20,220 66,630
781.30 20,329 67,644
781.35 20,440 68,663
781.40 20,550 69,688
781.45 20,661 70,718
781.50 20,772 71,754
781.55 20,883 72,795
781.60 20,995 73,842
781.65 21,106 74,895
781.70 21,219 75,953
781.75 21,331 77,017
781.80 21,444 78,086
781.85 21,557 79,161
781.90 21,670 80,242
781.95 21,784 81,328
782.00 21,898 82,420
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 31HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Link 3L: Ex Drainage Areas
Inflow Area = 12.660 ac, 4.30% Impervious, Inflow Depth = 0.95" for 2-yr event
Inflow = 19.72 cfs @ 3.27 hrs, Volume= 1.007 af
Primary = 19.72 cfs @ 3.27 hrs, Volume= 1.007 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Link 3L: Ex Drainage Areas
Inflow
Primary
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Inflow Area=12.660 ac
19.72 cfs
19.72 cfs
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 32HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Link 3L: Ex Drainage Areas
Time
(hours)
Inflow
(cfs)
Elevation
(feet)
Primary
(cfs)
0.00 0.00 0.00 0.00
2.50 0.00 0.00 0.00
5.00 1.46 0.00 1.46
7.50 0.00 0.00 0.00
10.00 0.00 0.00 0.00
12.50 0.00 0.00 0.00
15.00 0.00 0.00 0.00
17.50 0.00 0.00 0.00
20.00 0.00 0.00 0.00
22.50 0.00 0.00 0.00
25.00 0.00 0.00 0.00
27.50 0.00 0.00 0.00
30.00 0.00 0.00 0.00
32.50 0.00 0.00 0.00
35.00 0.00 0.00 0.00
37.50 0.00 0.00 0.00
40.00 0.00 0.00 0.00
42.50 0.00 0.00 0.00
45.00 0.00 0.00 0.00
47.50 0.00 0.00 0.00
50.00 0.00 0.00 0.00
52.50 0.00 0.00 0.00
55.00 0.00 0.00 0.00
57.50 0.00 0.00 0.00
60.00 0.00 0.00 0.00
62.50 0.00 0.00 0.00
65.00 0.00 0.00 0.00
67.50 0.00 0.00 0.00
70.00 0.00 0.00 0.00
72.50 0.00 0.00 0.00
75.00 0.00 0.00 0.00
77.50 0.00 0.00 0.00
80.00 0.00 0.00 0.00
82.50 0.00 0.00 0.00
85.00 0.00 0.00 0.00
87.50 0.00 0.00 0.00
90.00 0.00 0.00 0.00
92.50 0.00 0.00 0.00
95.00 0.00 0.00 0.00
97.50 0.00 0.00 0.00
100.00 0.00 0.00 0.00
102.50 0.00 0.00 0.00
105.00 0.00 0.00 0.00
107.50 0.00 0.00 0.00
110.00 0.00 0.00 0.00
112.50 0.00 0.00 0.00
115.00 0.00 0.00 0.00
117.50 0.00 0.00 0.00
120.00 0.00 0.00 0.00
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 33HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Link 7L: POI-1
Inflow Area = 4.440 ac, 57.82% Impervious, Inflow Depth > 1.75" for 2-yr event
Inflow = 3.76 cfs @ 3.32 hrs, Volume= 0.649 af
Primary = 3.76 cfs @ 3.32 hrs, Volume= 0.649 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Link 7L: POI-1
Inflow
Primary
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)4
3
2
1
0
Inflow Area=4.440 ac
3.76 cfs
3.76 cfs
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 34HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Link 7L: POI-1
Time
(hours)
Inflow
(cfs)
Elevation
(feet)
Primary
(cfs)
0.00 0.00 0.00 0.00
2.50 0.00 0.00 0.00
5.00 0.96 0.00 0.96
7.50 0.10 0.00 0.10
10.00 0.06 0.00 0.06
12.50 0.05 0.00 0.05
15.00 0.05 0.00 0.05
17.50 0.05 0.00 0.05
20.00 0.05 0.00 0.05
22.50 0.05 0.00 0.05
25.00 0.05 0.00 0.05
27.50 0.04 0.00 0.04
30.00 0.04 0.00 0.04
32.50 0.04 0.00 0.04
35.00 0.04 0.00 0.04
37.50 0.04 0.00 0.04
40.00 0.03 0.00 0.03
42.50 0.03 0.00 0.03
45.00 0.03 0.00 0.03
47.50 0.03 0.00 0.03
50.00 0.03 0.00 0.03
52.50 0.02 0.00 0.02
55.00 0.02 0.00 0.02
57.50 0.02 0.00 0.02
60.00 0.02 0.00 0.02
62.50 0.02 0.00 0.02
65.00 0.01 0.00 0.01
67.50 0.01 0.00 0.01
70.00 0.01 0.00 0.01
72.50 0.01 0.00 0.01
75.00 0.01 0.00 0.01
77.50 0.01 0.00 0.01
80.00 0.01 0.00 0.01
82.50 0.00 0.00 0.00
85.00 0.00 0.00 0.00
87.50 0.00 0.00 0.00
90.00 0.00 0.00 0.00
92.50 0.00 0.00 0.00
95.00 0.00 0.00 0.00
97.50 0.00 0.00 0.00
100.00 0.00 0.00 0.00
102.50 0.00 0.00 0.00
105.00 0.00 0.00 0.00
107.50 0.00 0.00 0.00
110.00 0.00 0.00 0.00
112.50 0.00 0.00 0.00
115.00 0.00 0.00 0.00
117.50 0.00 0.00 0.00
120.00 0.00 0.00 0.00
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 35HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Link 8L: POI-2
Inflow Area = 7.380 ac, 60.57% Impervious, Inflow Depth > 1.89" for 2-yr event
Inflow = 5.02 cfs @ 3.57 hrs, Volume= 1.164 af
Primary = 5.02 cfs @ 3.57 hrs, Volume= 1.164 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Link 8L: POI-2
Inflow
Primary
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)5
4
3
2
1
0
Inflow Area=7.380 ac
5.02 cfs
5.02 cfs
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 36HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Link 8L: POI-2
Time
(hours)
Inflow
(cfs)
Elevation
(feet)
Primary
(cfs)
0.00 0.00 0.00 0.00
2.50 0.00 0.00 0.00
5.00 2.05 0.00 2.05
7.50 0.29 0.00 0.29
10.00 0.12 0.00 0.12
12.50 0.11 0.00 0.11
15.00 0.11 0.00 0.11
17.50 0.10 0.00 0.10
20.00 0.10 0.00 0.10
22.50 0.10 0.00 0.10
25.00 0.09 0.00 0.09
27.50 0.09 0.00 0.09
30.00 0.09 0.00 0.09
32.50 0.08 0.00 0.08
35.00 0.08 0.00 0.08
37.50 0.07 0.00 0.07
40.00 0.07 0.00 0.07
42.50 0.07 0.00 0.07
45.00 0.06 0.00 0.06
47.50 0.06 0.00 0.06
50.00 0.05 0.00 0.05
52.50 0.05 0.00 0.05
55.00 0.04 0.00 0.04
57.50 0.04 0.00 0.04
60.00 0.04 0.00 0.04
62.50 0.03 0.00 0.03
65.00 0.03 0.00 0.03
67.50 0.02 0.00 0.02
70.00 0.02 0.00 0.02
72.50 0.02 0.00 0.02
75.00 0.01 0.00 0.01
77.50 0.01 0.00 0.01
80.00 0.01 0.00 0.01
82.50 0.01 0.00 0.01
85.00 0.01 0.00 0.01
87.50 0.01 0.00 0.01
90.00 0.00 0.00 0.00
92.50 0.00 0.00 0.00
95.00 0.00 0.00 0.00
97.50 0.00 0.00 0.00
100.00 0.00 0.00 0.00
102.50 0.00 0.00 0.00
105.00 0.00 0.00 0.00
107.50 0.00 0.00 0.00
110.00 0.00 0.00 0.00
112.50 0.00 0.00 0.00
115.00 0.00 0.00 0.00
117.50 0.00 0.00 0.00
120.00 0.00 0.00 0.00
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 37HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Link 9L: Combined
Inflow Area = 11.820 ac, 59.53% Impervious, Inflow Depth > 1.84" for 2-yr event
Inflow = 8.51 cfs @ 3.45 hrs, Volume= 1.814 af
Primary = 8.51 cfs @ 3.45 hrs, Volume= 1.814 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Link 9L: Combined
Inflow
Primary
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)9
8
7
6
5
4
3
2
1
0
Inflow Area=11.820 ac
8.51 cfs
8.51 cfs
Charlotte 6-hr 2-yr Rainfall=3.37"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 38HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Link 9L: Combined
Time
(hours)
Inflow
(cfs)
Elevation
(feet)
Primary
(cfs)
0.00 0.00 0.00 0.00
2.50 0.01 0.00 0.01
5.00 3.01 0.00 3.01
7.50 0.39 0.00 0.39
10.00 0.17 0.00 0.17
12.50 0.17 0.00 0.17
15.00 0.16 0.00 0.16
17.50 0.16 0.00 0.16
20.00 0.15 0.00 0.15
22.50 0.14 0.00 0.14
25.00 0.14 0.00 0.14
27.50 0.13 0.00 0.13
30.00 0.13 0.00 0.13
32.50 0.12 0.00 0.12
35.00 0.12 0.00 0.12
37.50 0.11 0.00 0.11
40.00 0.10 0.00 0.10
42.50 0.10 0.00 0.10
45.00 0.09 0.00 0.09
47.50 0.09 0.00 0.09
50.00 0.08 0.00 0.08
52.50 0.07 0.00 0.07
55.00 0.07 0.00 0.07
57.50 0.06 0.00 0.06
60.00 0.05 0.00 0.05
62.50 0.05 0.00 0.05
65.00 0.04 0.00 0.04
67.50 0.04 0.00 0.04
70.00 0.03 0.00 0.03
72.50 0.02 0.00 0.02
75.00 0.02 0.00 0.02
77.50 0.02 0.00 0.02
80.00 0.01 0.00 0.01
82.50 0.01 0.00 0.01
85.00 0.01 0.00 0.01
87.50 0.01 0.00 0.01
90.00 0.01 0.00 0.01
92.50 0.01 0.00 0.01
95.00 0.01 0.00 0.01
97.50 0.01 0.00 0.01
100.00 0.01 0.00 0.01
102.50 0.01 0.00 0.01
105.00 0.00 0.00 0.00
107.50 0.00 0.00 0.00
110.00 0.00 0.00 0.00
112.50 0.00 0.00 0.00
115.00 0.00 0.00 0.00
117.50 0.00 0.00 0.00
120.00 0.00 0.00 0.00
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 39HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Time span=0.00-120.00 hrs, dt=0.05 hrs, 2401 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Runoff Area=6.010 ac 5.66% Impervious Runoff Depth=2.06"Subcatchment 1S: Ex DA-1
Flow Length=699' Tc=12.0 min CN=71 Runoff=19.99 cfs 1.034 af
Runoff Area=6.650 ac 3.08% Impervious Runoff Depth=1.98"Subcatchment 2S: Ex DA-2
Flow Length=790' Tc=13.1 min CN=70 Runoff=20.55 cfs 1.100 af
Runoff Area=3.130 ac 69.33% Impervious Runoff Depth=3.50"Subcatchment 4S: Prop DA-1
Tc=5.0 min CN=87 Runoff=21.32 cfs 0.913 af
Runoff Area=7.380 ac 60.57% Impervious Runoff Depth=3.30"Subcatchment 5S: Prop DA-2
Tc=5.0 min CN=85 Runoff=47.92 cfs 2.032 af
Runoff Area=1.310 ac 30.31% Impervious Runoff Depth=2.14"Subcatchment 6S: Prop DA-3
Tc=5.0 min CN=72 Runoff=5.64 cfs 0.234 af
Runoff Area=2.420 ac 0.00% Impervious Runoff Depth=2.39"Subcatchment 10S: DA-2 Bypass A
Tc=5.0 min CN=75 Runoff=11.65 cfs 0.483 af
Peak Elev=789.76' Storage=20,887 cf Inflow=21.32 cfs 0.913 afPond 4P: Wet Pond 1
Primary=6.23 cfs 0.910 af Secondary=0.00 cfs 0.000 af Outflow=6.23 cfs 0.910 af
Peak Elev=780.45' Storage=51,142 cf Inflow=47.92 cfs 2.032 afPond 5P: Wet Pond 2
Primary=8.83 cfs 2.025 af Secondary=0.00 cfs 0.000 af Outflow=8.83 cfs 2.025 af
Inflow=40.47 cfs 2.133 afLink 3L: Ex Drainage Areas
Primary=40.47 cfs 2.133 af
Inflow=10.09 cfs 1.144 afLink 7L: POI-1
Primary=10.09 cfs 1.144 af
Inflow=8.83 cfs 2.025 afLink 8L: POI-2
Primary=8.83 cfs 2.025 af
Inflow=17.31 cfs 3.170 afLink 9L: Combined
Primary=17.31 cfs 3.170 af
Total Runoff Area = 26.900 ac Runoff Volume = 5.795 af Average Runoff Depth = 2.59"
71.81% Pervious = 19.318 ac 28.19% Impervious = 7.582 ac
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 40HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Subcatchment 1S: Ex DA-1
Runoff = 19.99 cfs @ 3.26 hrs, Volume= 1.034 af, Depth= 2.06"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Charlotte 6-hr 10-yr Rainfall=4.93"
Area (ac) CN Description
5.670 69 50-75% Grass cover, Fair, HSG B
0.340 98 Paved parking, HSG B
6.010 71 Weighted Average
5.670 94.34% Pervious Area
0.340 5.66% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
7.0 75 0.0400 0.18 Sheet Flow, Sheet Flow
Grass: Short n= 0.150 P2= 2.28"
4.6 387 0.0400 1.40 Shallow Concentrated Flow, Shallow Concentrated Flow
Short Grass Pasture Kv= 7.0 fps
0.4 237 0.0100 10.72 64.33 Channel Flow, Roadside Swale
Area= 6.0 sf Perim= 3.0' r= 2.00'
n= 0.022 Earth, clean & straight
12.0 699 Total
Subcatchment 1S: Ex DA-1
Runoff
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Charlotte 6-hr 10-yr
Rainfall=4.93"
Runoff Area=6.010 ac
Runoff Volume=1.034 af
Runoff Depth=2.06"
Flow Length=699'
Tc=12.0 min
CN=71
19.99 cfs
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 41HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 1S: Ex DA-1
Time
(hours)
Precip.
(inches)
Excess
(inches)
Runoff
(cfs)
0.00 0.00 0.00 0.00
2.50 0.85 0.00 0.00
5.00 4.72 1.91 1.20
7.50 4.93 2.06 0.00
10.00 4.93 2.06 0.00
12.50 4.93 2.06 0.00
15.00 4.93 2.06 0.00
17.50 4.93 2.06 0.00
20.00 4.93 2.06 0.00
22.50 4.93 2.06 0.00
25.00 4.93 2.06 0.00
27.50 4.93 2.06 0.00
30.00 4.93 2.06 0.00
32.50 4.93 2.06 0.00
35.00 4.93 2.06 0.00
37.50 4.93 2.06 0.00
40.00 4.93 2.06 0.00
42.50 4.93 2.06 0.00
45.00 4.93 2.06 0.00
47.50 4.93 2.06 0.00
50.00 4.93 2.06 0.00
52.50 4.93 2.06 0.00
55.00 4.93 2.06 0.00
57.50 4.93 2.06 0.00
60.00 4.93 2.06 0.00
62.50 4.93 2.06 0.00
65.00 4.93 2.06 0.00
67.50 4.93 2.06 0.00
70.00 4.93 2.06 0.00
72.50 4.93 2.06 0.00
75.00 4.93 2.06 0.00
77.50 4.93 2.06 0.00
80.00 4.93 2.06 0.00
82.50 4.93 2.06 0.00
85.00 4.93 2.06 0.00
87.50 4.93 2.06 0.00
90.00 4.93 2.06 0.00
92.50 4.93 2.06 0.00
95.00 4.93 2.06 0.00
97.50 4.93 2.06 0.00
100.00 4.93 2.06 0.00
102.50 4.93 2.06 0.00
105.00 4.93 2.06 0.00
107.50 4.93 2.06 0.00
110.00 4.93 2.06 0.00
112.50 4.93 2.06 0.00
115.00 4.93 2.06 0.00
117.50 4.93 2.06 0.00
120.00 4.93 2.06 0.00
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 42HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Subcatchment 2S: Ex DA-2
Runoff = 20.55 cfs @ 3.27 hrs, Volume= 1.100 af, Depth= 1.98"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Charlotte 6-hr 10-yr Rainfall=4.93"
Area (ac) CN Description
6.445 69 50-75% Grass cover, Fair, HSG B
0.205 98 Paved parking, HSG B
6.650 70 Weighted Average
6.445 96.92% Pervious Area
0.205 3.08% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
7.8 75 0.0300 0.16 Sheet Flow, Sheet Flow
Grass: Short n= 0.150 P2= 2.28"
4.8 400 0.0400 1.40 Shallow Concentrated Flow, Shallow Concentrated Flow
Short Grass Pasture Kv= 7.0 fps
0.5 315 0.0150 11.56 69.34 Channel Flow, Channel Flow
Area= 6.0 sf Perim= 3.0' r= 2.00'
n= 0.025 Earth, clean & winding
13.1 790 Total
Subcatchment 2S: Ex DA-2
Runoff
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Charlotte 6-hr 10-yr
Rainfall=4.93"
Runoff Area=6.650 ac
Runoff Volume=1.100 af
Runoff Depth=1.98"
Flow Length=790'
Tc=13.1 min
CN=70
20.55 cfs
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 43HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 2S: Ex DA-2
Time
(hours)
Precip.
(inches)
Excess
(inches)
Runoff
(cfs)
0.00 0.00 0.00 0.00
2.50 0.85 0.00 0.00
5.00 4.72 1.83 1.31
7.50 4.93 1.98 0.00
10.00 4.93 1.98 0.00
12.50 4.93 1.98 0.00
15.00 4.93 1.98 0.00
17.50 4.93 1.98 0.00
20.00 4.93 1.98 0.00
22.50 4.93 1.98 0.00
25.00 4.93 1.98 0.00
27.50 4.93 1.98 0.00
30.00 4.93 1.98 0.00
32.50 4.93 1.98 0.00
35.00 4.93 1.98 0.00
37.50 4.93 1.98 0.00
40.00 4.93 1.98 0.00
42.50 4.93 1.98 0.00
45.00 4.93 1.98 0.00
47.50 4.93 1.98 0.00
50.00 4.93 1.98 0.00
52.50 4.93 1.98 0.00
55.00 4.93 1.98 0.00
57.50 4.93 1.98 0.00
60.00 4.93 1.98 0.00
62.50 4.93 1.98 0.00
65.00 4.93 1.98 0.00
67.50 4.93 1.98 0.00
70.00 4.93 1.98 0.00
72.50 4.93 1.98 0.00
75.00 4.93 1.98 0.00
77.50 4.93 1.98 0.00
80.00 4.93 1.98 0.00
82.50 4.93 1.98 0.00
85.00 4.93 1.98 0.00
87.50 4.93 1.98 0.00
90.00 4.93 1.98 0.00
92.50 4.93 1.98 0.00
95.00 4.93 1.98 0.00
97.50 4.93 1.98 0.00
100.00 4.93 1.98 0.00
102.50 4.93 1.98 0.00
105.00 4.93 1.98 0.00
107.50 4.93 1.98 0.00
110.00 4.93 1.98 0.00
112.50 4.93 1.98 0.00
115.00 4.93 1.98 0.00
117.50 4.93 1.98 0.00
120.00 4.93 1.98 0.00
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 44HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Subcatchment 4S: Prop DA-1
[49] Hint: Tc<2dt may require smaller dt
Runoff = 21.32 cfs @ 3.15 hrs, Volume= 0.913 af, Depth= 3.50"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Charlotte 6-hr 10-yr Rainfall=4.93"
Area (ac) CN Description
2.170 98 Paved parking, HSG B
0.960 61 >75% Grass cover, Good, HSG B
3.130 87 Weighted Average
0.960 30.67% Pervious Area
2.170 69.33% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, ToC
Subcatchment 4S: Prop DA-1
Runoff
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Charlotte 6-hr 10-yr
Rainfall=4.93"
Runoff Area=3.130 ac
Runoff Volume=0.913 af
Runoff Depth=3.50"
Tc=5.0 min
CN=87
21.32 cfs
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 45HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 4S: Prop DA-1
Time
(hours)
Precip.
(inches)
Excess
(inches)
Runoff
(cfs)
0.00 0.00 0.00 0.00
2.50 0.85 0.15 1.08
5.00 4.72 3.31 0.76
7.50 4.93 3.50 0.00
10.00 4.93 3.50 0.00
12.50 4.93 3.50 0.00
15.00 4.93 3.50 0.00
17.50 4.93 3.50 0.00
20.00 4.93 3.50 0.00
22.50 4.93 3.50 0.00
25.00 4.93 3.50 0.00
27.50 4.93 3.50 0.00
30.00 4.93 3.50 0.00
32.50 4.93 3.50 0.00
35.00 4.93 3.50 0.00
37.50 4.93 3.50 0.00
40.00 4.93 3.50 0.00
42.50 4.93 3.50 0.00
45.00 4.93 3.50 0.00
47.50 4.93 3.50 0.00
50.00 4.93 3.50 0.00
52.50 4.93 3.50 0.00
55.00 4.93 3.50 0.00
57.50 4.93 3.50 0.00
60.00 4.93 3.50 0.00
62.50 4.93 3.50 0.00
65.00 4.93 3.50 0.00
67.50 4.93 3.50 0.00
70.00 4.93 3.50 0.00
72.50 4.93 3.50 0.00
75.00 4.93 3.50 0.00
77.50 4.93 3.50 0.00
80.00 4.93 3.50 0.00
82.50 4.93 3.50 0.00
85.00 4.93 3.50 0.00
87.50 4.93 3.50 0.00
90.00 4.93 3.50 0.00
92.50 4.93 3.50 0.00
95.00 4.93 3.50 0.00
97.50 4.93 3.50 0.00
100.00 4.93 3.50 0.00
102.50 4.93 3.50 0.00
105.00 4.93 3.50 0.00
107.50 4.93 3.50 0.00
110.00 4.93 3.50 0.00
112.50 4.93 3.50 0.00
115.00 4.93 3.50 0.00
117.50 4.93 3.50 0.00
120.00 4.93 3.50 0.00
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 46HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Subcatchment 5S: Prop DA-2
[49] Hint: Tc<2dt may require smaller dt
Runoff = 47.92 cfs @ 3.15 hrs, Volume= 2.032 af, Depth= 3.30"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Charlotte 6-hr 10-yr Rainfall=4.93"
Area (ac) CN Description
2.560 61 >75% Grass cover, Good, HSG B
1.600 98 Roofs, HSG B
2.870 98 Paved parking, HSG B
0.350 98 Water Surface, 0% imp, HSG B
7.380 85 Weighted Average
2.910 39.43% Pervious Area
4.470 60.57% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, Direct Entry
Subcatchment 5S: Prop DA-2
Runoff
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)50
45
40
35
30
25
20
15
10
5
0
Charlotte 6-hr 10-yr
Rainfall=4.93"
Runoff Area=7.380 ac
Runoff Volume=2.032 af
Runoff Depth=3.30"
Tc=5.0 min
CN=85
47.92 cfs
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 47HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 5S: Prop DA-2
Time
(hours)
Precip.
(inches)
Excess
(inches)
Runoff
(cfs)
0.00 0.00 0.00 0.00
2.50 0.85 0.11 2.10
5.00 4.72 3.11 1.75
7.50 4.93 3.30 0.00
10.00 4.93 3.30 0.00
12.50 4.93 3.30 0.00
15.00 4.93 3.30 0.00
17.50 4.93 3.30 0.00
20.00 4.93 3.30 0.00
22.50 4.93 3.30 0.00
25.00 4.93 3.30 0.00
27.50 4.93 3.30 0.00
30.00 4.93 3.30 0.00
32.50 4.93 3.30 0.00
35.00 4.93 3.30 0.00
37.50 4.93 3.30 0.00
40.00 4.93 3.30 0.00
42.50 4.93 3.30 0.00
45.00 4.93 3.30 0.00
47.50 4.93 3.30 0.00
50.00 4.93 3.30 0.00
52.50 4.93 3.30 0.00
55.00 4.93 3.30 0.00
57.50 4.93 3.30 0.00
60.00 4.93 3.30 0.00
62.50 4.93 3.30 0.00
65.00 4.93 3.30 0.00
67.50 4.93 3.30 0.00
70.00 4.93 3.30 0.00
72.50 4.93 3.30 0.00
75.00 4.93 3.30 0.00
77.50 4.93 3.30 0.00
80.00 4.93 3.30 0.00
82.50 4.93 3.30 0.00
85.00 4.93 3.30 0.00
87.50 4.93 3.30 0.00
90.00 4.93 3.30 0.00
92.50 4.93 3.30 0.00
95.00 4.93 3.30 0.00
97.50 4.93 3.30 0.00
100.00 4.93 3.30 0.00
102.50 4.93 3.30 0.00
105.00 4.93 3.30 0.00
107.50 4.93 3.30 0.00
110.00 4.93 3.30 0.00
112.50 4.93 3.30 0.00
115.00 4.93 3.30 0.00
117.50 4.93 3.30 0.00
120.00 4.93 3.30 0.00
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 48HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Subcatchment 6S: Prop DA-3
[49] Hint: Tc<2dt may require smaller dt
Runoff = 5.64 cfs @ 3.16 hrs, Volume= 0.234 af, Depth= 2.14"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Charlotte 6-hr 10-yr Rainfall=4.93"
Area (ac) CN Description
0.397 98 Paved parking, HSG B
0.913 61 >75% Grass cover, Good, HSG B
1.310 72 Weighted Average
0.913 69.69% Pervious Area
0.397 30.31% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, Time of Concentration
Subcatchment 6S: Prop DA-3
Runoff
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)6
5
4
3
2
1
0
Charlotte 6-hr 10-yr
Rainfall=4.93"
Runoff Area=1.310 ac
Runoff Volume=0.234 af
Runoff Depth=2.14"
Tc=5.0 min
CN=72
5.64 cfs
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 49HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 6S: Prop DA-3
Time
(hours)
Precip.
(inches)
Excess
(inches)
Runoff
(cfs)
0.00 0.00 0.00 0.00
2.50 0.85 0.00 0.01
5.00 4.72 1.99 0.26
7.50 4.93 2.14 0.00
10.00 4.93 2.14 0.00
12.50 4.93 2.14 0.00
15.00 4.93 2.14 0.00
17.50 4.93 2.14 0.00
20.00 4.93 2.14 0.00
22.50 4.93 2.14 0.00
25.00 4.93 2.14 0.00
27.50 4.93 2.14 0.00
30.00 4.93 2.14 0.00
32.50 4.93 2.14 0.00
35.00 4.93 2.14 0.00
37.50 4.93 2.14 0.00
40.00 4.93 2.14 0.00
42.50 4.93 2.14 0.00
45.00 4.93 2.14 0.00
47.50 4.93 2.14 0.00
50.00 4.93 2.14 0.00
52.50 4.93 2.14 0.00
55.00 4.93 2.14 0.00
57.50 4.93 2.14 0.00
60.00 4.93 2.14 0.00
62.50 4.93 2.14 0.00
65.00 4.93 2.14 0.00
67.50 4.93 2.14 0.00
70.00 4.93 2.14 0.00
72.50 4.93 2.14 0.00
75.00 4.93 2.14 0.00
77.50 4.93 2.14 0.00
80.00 4.93 2.14 0.00
82.50 4.93 2.14 0.00
85.00 4.93 2.14 0.00
87.50 4.93 2.14 0.00
90.00 4.93 2.14 0.00
92.50 4.93 2.14 0.00
95.00 4.93 2.14 0.00
97.50 4.93 2.14 0.00
100.00 4.93 2.14 0.00
102.50 4.93 2.14 0.00
105.00 4.93 2.14 0.00
107.50 4.93 2.14 0.00
110.00 4.93 2.14 0.00
112.50 4.93 2.14 0.00
115.00 4.93 2.14 0.00
117.50 4.93 2.14 0.00
120.00 4.93 2.14 0.00
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 50HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Subcatchment 10S: DA-2 Bypass A
[49] Hint: Tc<2dt may require smaller dt
Runoff = 11.65 cfs @ 3.16 hrs, Volume= 0.483 af, Depth= 2.39"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Charlotte 6-hr 10-yr Rainfall=4.93"
Area (ac) CN Description
* 2.420 75
2.420 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 10S: DA-2 Bypass A
Runoff
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)13
12
11
10
9
8
7
6
5
4
3
2
1
0
Charlotte 6-hr 10-yr
Rainfall=4.93"
Runoff Area=2.420 ac
Runoff Volume=0.483 af
Runoff Depth=2.39"
Tc=5.0 min
CN=75
11.65 cfs
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 51HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 10S: DA-2 Bypass A
Time
(hours)
Precip.
(inches)
Excess
(inches)
Runoff
(cfs)
0.00 0.00 0.00 0.00
2.50 0.85 0.01 0.14
5.00 4.72 2.23 0.50
7.50 4.93 2.39 0.00
10.00 4.93 2.39 0.00
12.50 4.93 2.39 0.00
15.00 4.93 2.39 0.00
17.50 4.93 2.39 0.00
20.00 4.93 2.39 0.00
22.50 4.93 2.39 0.00
25.00 4.93 2.39 0.00
27.50 4.93 2.39 0.00
30.00 4.93 2.39 0.00
32.50 4.93 2.39 0.00
35.00 4.93 2.39 0.00
37.50 4.93 2.39 0.00
40.00 4.93 2.39 0.00
42.50 4.93 2.39 0.00
45.00 4.93 2.39 0.00
47.50 4.93 2.39 0.00
50.00 4.93 2.39 0.00
52.50 4.93 2.39 0.00
55.00 4.93 2.39 0.00
57.50 4.93 2.39 0.00
60.00 4.93 2.39 0.00
62.50 4.93 2.39 0.00
65.00 4.93 2.39 0.00
67.50 4.93 2.39 0.00
70.00 4.93 2.39 0.00
72.50 4.93 2.39 0.00
75.00 4.93 2.39 0.00
77.50 4.93 2.39 0.00
80.00 4.93 2.39 0.00
82.50 4.93 2.39 0.00
85.00 4.93 2.39 0.00
87.50 4.93 2.39 0.00
90.00 4.93 2.39 0.00
92.50 4.93 2.39 0.00
95.00 4.93 2.39 0.00
97.50 4.93 2.39 0.00
100.00 4.93 2.39 0.00
102.50 4.93 2.39 0.00
105.00 4.93 2.39 0.00
107.50 4.93 2.39 0.00
110.00 4.93 2.39 0.00
112.50 4.93 2.39 0.00
115.00 4.93 2.39 0.00
117.50 4.93 2.39 0.00
120.00 4.93 2.39 0.00
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 52HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Pond 4P: Wet Pond 1
Inflow Area = 3.130 ac, 69.33% Impervious, Inflow Depth = 3.50" for 10-yr event
Inflow = 21.32 cfs @ 3.15 hrs, Volume= 0.913 af
Outflow = 6.23 cfs @ 3.39 hrs, Volume= 0.910 af, Atten= 71%, Lag= 14.4 min
Primary = 6.23 cfs @ 3.39 hrs, Volume= 0.910 af
Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Peak Elev= 789.76' @ 3.39 hrs Surf.Area= 10,864 sf Storage= 20,887 cf
Plug-Flow detention time= 440.8 min calculated for 0.910 af (100% of inflow)
Center-of-Mass det. time= 442.9 min ( 649.4 - 206.5 )
Volume Invert Avail.Storage Storage Description
#1 787.50' 48,545 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic-feet) (cubic-feet)
787.50 7,516 0 0
789.00 9,858 13,031 13,031
790.00 11,185 10,522 23,552
791.00 12,500 11,843 35,395
792.00 13,800 13,150 48,545
Device Routing Invert Outlet Devices
#1 Primary 787.50'24.0" Round Culvert
L= 23.7' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 787.50' / 787.38' S= 0.0051 '/' Cc= 0.900
n= 0.013, Flow Area= 3.14 sf
#2 Device 1 787.50'1.5" Vert. Orifice/Grate C= 0.600
#3 Device 1 788.50'24.0" W x 8.0" H Vert. Orifice/Grate C= 0.600
#4 Device 1 790.50'16.0' long Sharp-Crested Vee/Trap Weir Cv= 2.62 (C= 3.28)
#5 Secondary 791.00'20.0' long x 10.0' breadth Broad-Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64
Primary OutFlow Max=6.22 cfs @ 3.39 hrs HW=789.76' (Free Discharge)
1=Culvert (Passes 6.22 cfs of 14.32 cfs potential flow)
2=Orifice/Grate (Orifice Controls 0.09 cfs @ 7.13 fps)
3=Orifice/Grate (Orifice Controls 6.13 cfs @ 4.60 fps)
4=Sharp-Crested Vee/Trap Weir ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=787.50' (Free Discharge)
5=Broad-Crested Rectangular Weir ( Controls 0.00 cfs)
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 53HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Pond 4P: Wet Pond 1
Inflow
Outflow
Primary
Secondary
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)22
20
18
16
14
12
10
8
6
4
2
0
Inflow Area=3.130 ac
Peak Elev=789.76'
Storage=20,887 cf
21.32 cfs
6.23 cfs
6.23 cfs
0.00 cfs
Pond 4P: Wet Pond 1
Total
Primary
Secondary
Stage-Discharge
Discharge (cfs)
80706050403020100Elevation (feet)792
791
790
789
788
Culvert + Orifice/Grate
Orifice/Grate
Sharp-Crested Vee/Trap Weir
Broad-Crested Rectangular Weir
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
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Pond 4P: Wet Pond 1
Surface
Storage
Stage-Area-Storage
Storage (cubic-feet)
45,00040,00035,00030,00025,00020,00015,00010,0005,0000
Surface/Horizontal/Wetted Area (sq-ft)
13,00012,00011,00010,0009,0008,0007,0006,0005,0004,0003,0002,0001,0000
Elevation (feet)792
791
790
789
788
Custom Stage Data
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 55HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Pond 4P: Wet Pond 1
Time
(hours)
Inflow
(cfs)
Storage
(cubic-feet)
Elevation
(feet)
Outflow
(cfs)
Primary
(cfs)
Secondary
(cfs)
0.00 0.00 0 787.50 0.00 0.00 0.00
2.50 1.08 1,373 787.68 0.02 0.02 0.00
5.00 0.76 11,369 788.83 1.28 1.28 0.00
7.50 0.00 8,714 788.55 0.13 0.13 0.00
10.00 0.00 8,071 788.48 0.06 0.06 0.00
12.50 0.00 7,571 788.42 0.05 0.05 0.00
15.00 0.00 7,087 788.37 0.05 0.05 0.00
17.50 0.00 6,618 788.31 0.05 0.05 0.00
20.00 0.00 6,166 788.26 0.05 0.05 0.00
22.50 0.00 5,730 788.21 0.05 0.05 0.00
25.00 0.00 5,310 788.16 0.05 0.05 0.00
27.50 0.00 4,907 788.11 0.04 0.04 0.00
30.00 0.00 4,521 788.07 0.04 0.04 0.00
32.50 0.00 4,151 788.02 0.04 0.04 0.00
35.00 0.00 3,799 787.98 0.04 0.04 0.00
37.50 0.00 3,463 787.94 0.04 0.04 0.00
40.00 0.00 3,145 787.90 0.03 0.03 0.00
42.50 0.00 2,844 787.86 0.03 0.03 0.00
45.00 0.00 2,561 787.83 0.03 0.03 0.00
47.50 0.00 2,295 787.80 0.03 0.03 0.00
50.00 0.00 2,047 787.77 0.03 0.03 0.00
52.50 0.00 1,817 787.74 0.02 0.02 0.00
55.00 0.00 1,605 787.71 0.02 0.02 0.00
57.50 0.00 1,411 787.68 0.02 0.02 0.00
60.00 0.00 1,235 787.66 0.02 0.02 0.00
62.50 0.00 1,078 787.64 0.02 0.02 0.00
65.00 0.00 938 787.62 0.01 0.01 0.00
67.50 0.00 820 787.61 0.01 0.01 0.00
70.00 0.00 719 787.59 0.01 0.01 0.00
72.50 0.00 634 787.58 0.01 0.01 0.00
75.00 0.00 562 787.57 0.01 0.01 0.00
77.50 0.00 502 787.57 0.01 0.01 0.00
80.00 0.00 452 787.56 0.01 0.01 0.00
82.50 0.00 410 787.55 0.00 0.00 0.00
85.00 0.00 375 787.55 0.00 0.00 0.00
87.50 0.00 345 787.55 0.00 0.00 0.00
90.00 0.00 320 787.54 0.00 0.00 0.00
92.50 0.00 297 787.54 0.00 0.00 0.00
95.00 0.00 275 787.54 0.00 0.00 0.00
97.50 0.00 255 787.53 0.00 0.00 0.00
100.00 0.00 236 787.53 0.00 0.00 0.00
102.50 0.00 219 787.53 0.00 0.00 0.00
105.00 0.00 203 787.53 0.00 0.00 0.00
107.50 0.00 188 787.52 0.00 0.00 0.00
110.00 0.00 174 787.52 0.00 0.00 0.00
112.50 0.00 161 787.52 0.00 0.00 0.00
115.00 0.00 150 787.52 0.00 0.00 0.00
117.50 0.00 139 787.52 0.00 0.00 0.00
120.00 0.00 128 787.52 0.00 0.00 0.00
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 56HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 4P: Wet Pond 1
Elevation
(feet)
Discharge
(cfs)
Primary
(cfs)
Secondary
(cfs)
787.50 0.00 0.00 0.00
787.55 0.00 0.00 0.00
787.60 0.01 0.01 0.00
787.65 0.02 0.02 0.00
787.70 0.02 0.02 0.00
787.75 0.03 0.03 0.00
787.80 0.03 0.03 0.00
787.85 0.03 0.03 0.00
787.90 0.03 0.03 0.00
787.95 0.04 0.04 0.00
788.00 0.04 0.04 0.00
788.05 0.04 0.04 0.00
788.10 0.04 0.04 0.00
788.15 0.05 0.05 0.00
788.20 0.05 0.05 0.00
788.25 0.05 0.05 0.00
788.30 0.05 0.05 0.00
788.35 0.05 0.05 0.00
788.40 0.05 0.05 0.00
788.45 0.06 0.06 0.00
788.50 0.06 0.06 0.00
788.55 0.13 0.13 0.00
788.60 0.26 0.26 0.00
788.65 0.43 0.43 0.00
788.70 0.64 0.64 0.00
788.75 0.87 0.87 0.00
788.80 1.12 1.12 0.00
788.85 1.40 1.40 0.00
788.90 1.69 1.69 0.00
788.95 2.01 2.01 0.00
789.00 2.34 2.34 0.00
789.05 2.69 2.69 0.00
789.10 3.06 3.06 0.00
789.15 3.44 3.44 0.00
789.20 3.80 3.80 0.00
789.25 4.09 4.09 0.00
789.30 4.36 4.36 0.00
789.35 4.61 4.61 0.00
789.40 4.84 4.84 0.00
789.45 5.06 5.06 0.00
789.50 5.27 5.27 0.00
789.55 5.47 5.47 0.00
789.60 5.66 5.66 0.00
789.65 5.85 5.85 0.00
789.70 6.03 6.03 0.00
789.75 6.20 6.20 0.00
789.80 6.37 6.37 0.00
789.85 6.53 6.53 0.00
789.90 6.69 6.69 0.00
789.95 6.85 6.85 0.00
790.00 7.00 7.00 0.00
790.05 7.15 7.15 0.00
Elevation
(feet)
Discharge
(cfs)
Primary
(cfs)
Secondary
(cfs)
790.10 7.30 7.30 0.00
790.15 7.44 7.44 0.00
790.20 7.58 7.58 0.00
790.25 7.72 7.72 0.00
790.30 7.86 7.86 0.00
790.35 7.99 7.99 0.00
790.40 8.12 8.12 0.00
790.45 8.25 8.25 0.00
790.50 8.38 8.38 0.00
790.55 9.09 9.09 0.00
790.60 10.28 10.28 0.00
790.65 11.79 11.79 0.00
790.70 13.55 13.55 0.00
790.75 15.53 15.53 0.00
790.80 17.71 17.71 0.00
790.85 20.06 20.06 0.00
790.90 22.58 22.58 0.00
790.95 23.58 23.58 0.00
791.00 23.92 23.92 0.00
791.05 24.71 24.16 0.56
791.10 25.97 24.39 1.57
791.15 27.52 24.62 2.89
791.20 29.31 24.86 4.45
791.25 31.35 25.08 6.27
791.30 33.61 25.31 8.30
791.35 36.07 25.54 10.53
791.40 38.71 25.76 12.95
791.45 41.65 25.98 15.67
791.50 44.80 26.20 18.60
791.55 48.16 26.42 21.74
791.60 51.73 26.63 25.10
791.65 55.12 26.85 28.27
791.70 58.63 27.06 31.57
791.75 62.25 27.27 34.98
791.80 65.98 27.48 38.50
791.85 69.81 27.69 42.12
791.90 73.74 27.89 45.85
791.95 77.77 28.10 49.68
792.00 81.90 28.30 53.60
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 57HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 4P: Wet Pond 1
Elevation
(feet)
Surface
(sq-ft)
Storage
(cubic-feet)
787.50 7,516 0
787.55 7,594 378
787.60 7,672 759
787.65 7,750 1,145
787.70 7,828 1,534
787.75 7,906 1,928
787.80 7,984 2,325
787.85 8,062 2,726
787.90 8,141 3,131
787.95 8,219 3,540
788.00 8,297 3,953
788.05 8,375 4,370
788.10 8,453 4,791
788.15 8,531 5,215
788.20 8,609 5,644
788.25 8,687 6,076
788.30 8,765 6,512
788.35 8,843 6,953
788.40 8,921 7,397
788.45 8,999 7,845
788.50 9,077 8,297
788.55 9,155 8,752
788.60 9,233 9,212
788.65 9,312 9,676
788.70 9,390 10,143
788.75 9,468 10,615
788.80 9,546 11,090
788.85 9,624 11,569
788.90 9,702 12,053
788.95 9,780 12,540
789.00 9,858 13,031
789.05 9,924 13,525
789.10 9,991 14,023
789.15 10,057 14,524
789.20 10,123 15,029
789.25 10,190 15,536
789.30 10,256 16,048
789.35 10,322 16,562
789.40 10,389 17,080
789.45 10,455 17,601
789.50 10,522 18,125
789.55 10,588 18,653
789.60 10,654 19,184
789.65 10,721 19,719
789.70 10,787 20,256
789.75 10,853 20,797
789.80 10,920 21,342
789.85 10,986 21,889
789.90 11,052 22,440
789.95 11,119 22,994
790.00 11,185 23,552
790.05 11,251 24,113
Elevation
(feet)
Surface
(sq-ft)
Storage
(cubic-feet)
790.10 11,317 24,677
790.15 11,382 25,245
790.20 11,448 25,815
790.25 11,514 26,389
790.30 11,579 26,967
790.35 11,645 27,547
790.40 11,711 28,131
790.45 11,777 28,718
790.50 11,843 29,309
790.55 11,908 29,903
790.60 11,974 30,500
790.65 12,040 31,100
790.70 12,106 31,704
790.75 12,171 32,311
790.80 12,237 32,921
790.85 12,303 33,534
790.90 12,368 34,151
790.95 12,434 34,771
791.00 12,500 35,395
791.05 12,565 36,021
791.10 12,630 36,651
791.15 12,695 37,284
791.20 12,760 37,921
791.25 12,825 38,560
791.30 12,890 39,203
791.35 12,955 39,849
791.40 13,020 40,498
791.45 13,085 41,151
791.50 13,150 41,807
791.55 13,215 42,466
791.60 13,280 43,129
791.65 13,345 43,794
791.70 13,410 44,463
791.75 13,475 45,135
791.80 13,540 45,810
791.85 13,605 46,489
791.90 13,670 47,171
791.95 13,735 47,856
792.00 13,800 48,545
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 58HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Pond 5P: Wet Pond 2
Inflow Area = 7.380 ac, 60.57% Impervious, Inflow Depth = 3.30" for 10-yr event
Inflow = 47.92 cfs @ 3.15 hrs, Volume= 2.032 af
Outflow = 8.83 cfs @ 3.56 hrs, Volume= 2.025 af, Atten= 82%, Lag= 24.7 min
Primary = 8.83 cfs @ 3.56 hrs, Volume= 2.025 af
Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Peak Elev= 780.45' @ 3.56 hrs Surf.Area= 18,466 sf Storage= 51,142 cf
Plug-Flow detention time= 413.7 min calculated for 2.024 af (100% of inflow)
Center-of-Mass det. time= 415.8 min ( 623.9 - 208.1 )
Volume Invert Avail.Storage Storage Description
#1 777.00' 82,420 cf Custom Stage Data (Irregular) Listed below (Recalc)
Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area
(feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft)
777.00 11,324 654.0 0 0 11,324
778.00 13,317 673.0 12,307 12,307 13,437
779.00 15,366 692.0 14,329 26,636 15,611
780.00 17,509 713.0 16,426 43,062 18,062
781.00 19,675 731.0 18,581 61,644 20,253
782.00 21,898 750.0 20,777 82,420 22,611
Device Routing Invert Outlet Devices
#1 Primary 776.50'24.0" Round Culvert L= 77.6' Ke= 0.500
Inlet / Outlet Invert= 776.50' / 775.72' S= 0.0101 '/' Cc= 0.900
n= 0.013, Flow Area= 3.14 sf
#2 Device 1 777.00'2.0" Vert. Orifice/Grate C= 0.600
#3 Device 1 778.30'24.0" W x 8.0" H Vert. Orifice/Grate C= 0.600
#4 Primary 780.50'16.0' long Sharp-Crested Vee/Trap Weir Cv= 2.62 (C= 3.28)
#5 Secondary 780.75'12.0' long Sharp-Crested Vee/Trap Weir Cv= 2.62 (C= 3.28)
Primary OutFlow Max=8.83 cfs @ 3.56 hrs HW=780.45' (Free Discharge)
1=Culvert (Passes 8.83 cfs of 25.97 cfs potential flow)
2=Orifice/Grate (Orifice Controls 0.19 cfs @ 8.83 fps)
3=Orifice/Grate (Orifice Controls 8.64 cfs @ 6.48 fps)
4=Sharp-Crested Vee/Trap Weir ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=777.00' (Free Discharge)
5=Sharp-Crested Vee/Trap Weir ( Controls 0.00 cfs)
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 59HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Pond 5P: Wet Pond 2
Inflow
Outflow
Primary
Secondary
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)50
45
40
35
30
25
20
15
10
5
0
Inflow Area=7.380 ac
Peak Elev=780.45'
Storage=51,142 cf
47.92 cfs
8.83 cfs
8.83 cfs
0.00 cfs
Pond 5P: Wet Pond 2
Total
Primary
Secondary
Stage-Discharge
Discharge (cfs)
160140120100806040200Elevation (feet)782
781
780
779
778
777
Orifice/Grate
Orifice/Grate
Sharp-Crested Vee/Trap Weir Sharp-Crested Vee/Trap Weir
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 60HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Pond 5P: Wet Pond 2
Surface
Storage
Stage-Area-Storage
Storage (cubic-feet)
80,00070,00060,00050,00040,00030,00020,00010,0000
Surface/Horizontal/Wetted Area (sq-ft)
20,00018,00016,00014,00012,00010,0008,0006,0004,0002,0000
Elevation (feet)782
781
780
779
778
777
Custom Stage Data
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 61HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Pond 5P: Wet Pond 2
Time
(hours)
Inflow
(cfs)
Storage
(cubic-feet)
Elevation
(feet)
Outflow
(cfs)
Primary
(cfs)
Secondary
(cfs)
0.00 0.00 0 777.00 0.00 0.00 0.00
2.50 2.10 2,321 777.20 0.04 0.04 0.00
5.00 1.75 31,306 779.30 5.33 5.33 0.00
7.50 0.00 18,125 778.42 0.40 0.40 0.00
10.00 0.00 16,320 778.29 0.12 0.12 0.00
12.50 0.00 15,295 778.22 0.11 0.11 0.00
15.00 0.00 14,303 778.15 0.11 0.11 0.00
17.50 0.00 13,344 778.08 0.10 0.10 0.00
20.00 0.00 12,418 778.01 0.10 0.10 0.00
22.50 0.00 11,526 777.94 0.10 0.10 0.00
25.00 0.00 10,667 777.88 0.09 0.09 0.00
27.50 0.00 9,843 777.81 0.09 0.09 0.00
30.00 0.00 9,053 777.75 0.09 0.09 0.00
32.50 0.00 8,298 777.69 0.08 0.08 0.00
35.00 0.00 7,579 777.63 0.08 0.08 0.00
37.50 0.00 6,895 777.58 0.07 0.07 0.00
40.00 0.00 6,247 777.53 0.07 0.07 0.00
42.50 0.00 5,635 777.48 0.07 0.07 0.00
45.00 0.00 5,059 777.43 0.06 0.06 0.00
47.50 0.00 4,521 777.39 0.06 0.06 0.00
50.00 0.00 4,019 777.34 0.05 0.05 0.00
52.50 0.00 3,555 777.31 0.05 0.05 0.00
55.00 0.00 3,128 777.27 0.05 0.05 0.00
57.50 0.00 2,739 777.24 0.04 0.04 0.00
60.00 0.00 2,389 777.21 0.04 0.04 0.00
62.50 0.00 2,076 777.18 0.03 0.03 0.00
65.00 0.00 1,802 777.16 0.03 0.03 0.00
67.50 0.00 1,565 777.14 0.02 0.02 0.00
70.00 0.00 1,370 777.12 0.02 0.02 0.00
72.50 0.00 1,209 777.11 0.02 0.02 0.00
75.00 0.00 1,076 777.09 0.01 0.01 0.00
77.50 0.00 964 777.08 0.01 0.01 0.00
80.00 0.00 869 777.08 0.01 0.01 0.00
82.50 0.00 789 777.07 0.01 0.01 0.00
85.00 0.00 720 777.06 0.01 0.01 0.00
87.50 0.00 662 777.06 0.01 0.01 0.00
90.00 0.00 613 777.05 0.01 0.01 0.00
92.50 0.00 572 777.05 0.00 0.00 0.00
95.00 0.00 535 777.05 0.00 0.00 0.00
97.50 0.00 501 777.04 0.00 0.00 0.00
100.00 0.00 469 777.04 0.00 0.00 0.00
102.50 0.00 439 777.04 0.00 0.00 0.00
105.00 0.00 410 777.04 0.00 0.00 0.00
107.50 0.00 384 777.03 0.00 0.00 0.00
110.00 0.00 359 777.03 0.00 0.00 0.00
112.50 0.00 336 777.03 0.00 0.00 0.00
115.00 0.00 315 777.03 0.00 0.00 0.00
117.50 0.00 295 777.03 0.00 0.00 0.00
120.00 0.00 276 777.02 0.00 0.00 0.00
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 62HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 5P: Wet Pond 2
Elevation
(feet)
Discharge
(cfs)
Primary
(cfs)
Secondary
(cfs)
777.00 0.00 0.00 0.00
777.05 0.00 0.00 0.00
777.10 0.01 0.01 0.00
777.15 0.03 0.03 0.00
777.20 0.04 0.04 0.00
777.25 0.04 0.04 0.00
777.30 0.05 0.05 0.00
777.35 0.05 0.05 0.00
777.40 0.06 0.06 0.00
777.45 0.06 0.06 0.00
777.50 0.07 0.07 0.00
777.55 0.07 0.07 0.00
777.60 0.08 0.08 0.00
777.65 0.08 0.08 0.00
777.70 0.08 0.08 0.00
777.75 0.09 0.09 0.00
777.80 0.09 0.09 0.00
777.85 0.09 0.09 0.00
777.90 0.09 0.09 0.00
777.95 0.10 0.10 0.00
778.00 0.10 0.10 0.00
778.05 0.10 0.10 0.00
778.10 0.11 0.11 0.00
778.15 0.11 0.11 0.00
778.20 0.11 0.11 0.00
778.25 0.11 0.11 0.00
778.30 0.12 0.12 0.00
778.35 0.19 0.19 0.00
778.40 0.32 0.32 0.00
778.45 0.50 0.50 0.00
778.50 0.70 0.70 0.00
778.55 0.93 0.93 0.00
778.60 1.18 1.18 0.00
778.65 1.46 1.46 0.00
778.70 1.76 1.76 0.00
778.75 2.07 2.07 0.00
778.80 2.41 2.41 0.00
778.85 2.76 2.76 0.00
778.90 3.13 3.13 0.00
778.95 3.51 3.51 0.00
779.00 3.87 3.87 0.00
779.05 4.16 4.16 0.00
779.10 4.43 4.43 0.00
779.15 4.68 4.68 0.00
779.20 4.91 4.91 0.00
779.25 5.13 5.13 0.00
779.30 5.34 5.34 0.00
779.35 5.54 5.54 0.00
779.40 5.74 5.74 0.00
779.45 5.92 5.92 0.00
779.50 6.10 6.10 0.00
779.55 6.28 6.28 0.00
Elevation
(feet)
Discharge
(cfs)
Primary
(cfs)
Secondary
(cfs)
779.60 6.45 6.45 0.00
779.65 6.61 6.61 0.00
779.70 6.77 6.77 0.00
779.75 6.93 6.93 0.00
779.80 7.08 7.08 0.00
779.85 7.23 7.23 0.00
779.90 7.38 7.38 0.00
779.95 7.52 7.52 0.00
780.00 7.67 7.67 0.00
780.05 7.80 7.80 0.00
780.10 7.94 7.94 0.00
780.15 8.07 8.07 0.00
780.20 8.21 8.21 0.00
780.25 8.34 8.34 0.00
780.30 8.46 8.46 0.00
780.35 8.59 8.59 0.00
780.40 8.71 8.71 0.00
780.45 8.83 8.83 0.00
780.50 8.95 8.95 0.00
780.55 9.66 9.66 0.00
780.60 10.85 10.85 0.00
780.65 12.35 12.35 0.00
780.70 14.11 14.11 0.00
780.75 16.08 16.08 0.00
780.80 18.69 18.25 0.44
780.85 21.85 20.60 1.24
780.90 25.40 23.12 2.28
780.95 29.30 25.79 3.52
781.00 33.51 28.60 4.91
781.05 38.01 31.56 6.46
781.10 42.78 34.64 8.14
781.15 47.79 37.85 9.94
781.20 53.04 41.18 11.86
781.25 58.52 44.63 13.89
781.30 64.22 48.19 16.03
781.35 70.12 51.86 18.26
781.40 76.23 55.63 20.60
781.45 82.52 59.51 23.02
781.50 89.01 63.48 25.53
781.55 95.68 67.56 28.12
781.60 102.53 71.73 30.80
781.65 109.55 75.99 33.55
781.70 116.73 80.34 36.39
781.75 124.09 84.79 39.30
781.80 131.60 89.32 42.28
781.85 139.27 93.93 45.34
781.90 147.10 98.63 48.47
781.95 155.07 103.41 51.66
782.00 163.20 108.27 54.92
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 63HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 5P: Wet Pond 2
Elevation
(feet)
Surface
(sq-ft)
Storage
(cubic-feet)
777.00 11,324 0
777.05 11,420 569
777.10 11,516 1,142
777.15 11,613 1,720
777.20 11,710 2,303
777.25 11,807 2,891
777.30 11,905 3,484
777.35 12,003 4,082
777.40 12,102 4,684
777.45 12,201 5,292
777.50 12,300 5,904
777.55 12,400 6,522
777.60 12,500 7,144
777.65 12,601 7,772
777.70 12,702 8,405
777.75 12,804 9,042
777.80 12,905 9,685
777.85 13,008 10,333
777.90 13,110 10,986
777.95 13,214 11,644
778.00 13,317 12,307
778.05 13,416 12,975
778.10 13,515 13,649
778.15 13,615 14,327
778.20 13,715 15,010
778.25 13,816 15,698
778.30 13,916 16,392
778.35 14,017 17,090
778.40 14,119 17,793
778.45 14,221 18,502
778.50 14,323 19,216
778.55 14,426 19,934
778.60 14,529 20,658
778.65 14,632 21,387
778.70 14,736 22,121
778.75 14,840 22,861
778.80 14,944 23,605
778.85 15,049 24,355
778.90 15,155 25,110
778.95 15,260 25,871
779.00 15,366 26,636
779.05 15,470 27,407
779.10 15,574 28,183
779.15 15,679 28,965
779.20 15,783 29,751
779.25 15,889 30,543
779.30 15,994 31,340
779.35 16,100 32,142
779.40 16,206 32,950
779.45 16,313 33,763
779.50 16,420 34,581
779.55 16,527 35,405
Elevation
(feet)
Surface
(sq-ft)
Storage
(cubic-feet)
779.60 16,635 36,234
779.65 16,743 37,069
779.70 16,851 37,908
779.75 16,960 38,754
779.80 17,069 39,604
779.85 17,179 40,461
779.90 17,288 41,322
779.95 17,399 42,189
780.00 17,509 43,062
780.05 17,614 43,940
780.10 17,720 44,824
780.15 17,826 45,712
780.20 17,932 46,606
780.25 18,039 47,505
780.30 18,146 48,410
780.35 18,253 49,320
780.40 18,360 50,235
780.45 18,468 51,156
780.50 18,576 52,082
780.55 18,685 53,014
780.60 18,793 53,951
780.65 18,903 54,893
780.70 19,012 55,841
780.75 19,122 56,794
780.80 19,232 57,753
780.85 19,342 58,717
780.90 19,453 59,687
780.95 19,564 60,663
781.00 19,675 61,644
781.05 19,783 62,630
781.10 19,892 63,622
781.15 20,001 64,619
781.20 20,110 65,622
781.25 20,220 66,630
781.30 20,329 67,644
781.35 20,440 68,663
781.40 20,550 69,688
781.45 20,661 70,718
781.50 20,772 71,754
781.55 20,883 72,795
781.60 20,995 73,842
781.65 21,106 74,895
781.70 21,219 75,953
781.75 21,331 77,017
781.80 21,444 78,086
781.85 21,557 79,161
781.90 21,670 80,242
781.95 21,784 81,328
782.00 21,898 82,420
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 64HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Link 3L: Ex Drainage Areas
Inflow Area = 12.660 ac, 4.30% Impervious, Inflow Depth = 2.02" for 10-yr event
Inflow = 40.47 cfs @ 3.26 hrs, Volume= 2.133 af
Primary = 40.47 cfs @ 3.26 hrs, Volume= 2.133 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Link 3L: Ex Drainage Areas
Inflow
Primary
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)44
42
40
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
Inflow Area=12.660 ac
40.47 cfs
40.47 cfs
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 65HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Link 3L: Ex Drainage Areas
Time
(hours)
Inflow
(cfs)
Elevation
(feet)
Primary
(cfs)
0.00 0.00 0.00 0.00
2.50 0.00 0.00 0.00
5.00 2.52 0.00 2.52
7.50 0.00 0.00 0.00
10.00 0.00 0.00 0.00
12.50 0.00 0.00 0.00
15.00 0.00 0.00 0.00
17.50 0.00 0.00 0.00
20.00 0.00 0.00 0.00
22.50 0.00 0.00 0.00
25.00 0.00 0.00 0.00
27.50 0.00 0.00 0.00
30.00 0.00 0.00 0.00
32.50 0.00 0.00 0.00
35.00 0.00 0.00 0.00
37.50 0.00 0.00 0.00
40.00 0.00 0.00 0.00
42.50 0.00 0.00 0.00
45.00 0.00 0.00 0.00
47.50 0.00 0.00 0.00
50.00 0.00 0.00 0.00
52.50 0.00 0.00 0.00
55.00 0.00 0.00 0.00
57.50 0.00 0.00 0.00
60.00 0.00 0.00 0.00
62.50 0.00 0.00 0.00
65.00 0.00 0.00 0.00
67.50 0.00 0.00 0.00
70.00 0.00 0.00 0.00
72.50 0.00 0.00 0.00
75.00 0.00 0.00 0.00
77.50 0.00 0.00 0.00
80.00 0.00 0.00 0.00
82.50 0.00 0.00 0.00
85.00 0.00 0.00 0.00
87.50 0.00 0.00 0.00
90.00 0.00 0.00 0.00
92.50 0.00 0.00 0.00
95.00 0.00 0.00 0.00
97.50 0.00 0.00 0.00
100.00 0.00 0.00 0.00
102.50 0.00 0.00 0.00
105.00 0.00 0.00 0.00
107.50 0.00 0.00 0.00
110.00 0.00 0.00 0.00
112.50 0.00 0.00 0.00
115.00 0.00 0.00 0.00
117.50 0.00 0.00 0.00
120.00 0.00 0.00 0.00
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 66HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Link 7L: POI-1
Inflow Area = 4.440 ac, 57.82% Impervious, Inflow Depth > 3.09" for 10-yr event
Inflow = 10.09 cfs @ 3.21 hrs, Volume= 1.144 af
Primary = 10.09 cfs @ 3.21 hrs, Volume= 1.144 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Link 7L: POI-1
Inflow
Primary
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)11
10
9
8
7
6
5
4
3
2
1
0
Inflow Area=4.440 ac
10.09 cfs
10.09 cfs
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 67HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Link 7L: POI-1
Time
(hours)
Inflow
(cfs)
Elevation
(feet)
Primary
(cfs)
0.00 0.00 0.00 0.00
2.50 0.03 0.00 0.03
5.00 1.54 0.00 1.54
7.50 0.13 0.00 0.13
10.00 0.06 0.00 0.06
12.50 0.05 0.00 0.05
15.00 0.05 0.00 0.05
17.50 0.05 0.00 0.05
20.00 0.05 0.00 0.05
22.50 0.05 0.00 0.05
25.00 0.05 0.00 0.05
27.50 0.04 0.00 0.04
30.00 0.04 0.00 0.04
32.50 0.04 0.00 0.04
35.00 0.04 0.00 0.04
37.50 0.04 0.00 0.04
40.00 0.03 0.00 0.03
42.50 0.03 0.00 0.03
45.00 0.03 0.00 0.03
47.50 0.03 0.00 0.03
50.00 0.03 0.00 0.03
52.50 0.02 0.00 0.02
55.00 0.02 0.00 0.02
57.50 0.02 0.00 0.02
60.00 0.02 0.00 0.02
62.50 0.02 0.00 0.02
65.00 0.01 0.00 0.01
67.50 0.01 0.00 0.01
70.00 0.01 0.00 0.01
72.50 0.01 0.00 0.01
75.00 0.01 0.00 0.01
77.50 0.01 0.00 0.01
80.00 0.01 0.00 0.01
82.50 0.00 0.00 0.00
85.00 0.00 0.00 0.00
87.50 0.00 0.00 0.00
90.00 0.00 0.00 0.00
92.50 0.00 0.00 0.00
95.00 0.00 0.00 0.00
97.50 0.00 0.00 0.00
100.00 0.00 0.00 0.00
102.50 0.00 0.00 0.00
105.00 0.00 0.00 0.00
107.50 0.00 0.00 0.00
110.00 0.00 0.00 0.00
112.50 0.00 0.00 0.00
115.00 0.00 0.00 0.00
117.50 0.00 0.00 0.00
120.00 0.00 0.00 0.00
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 68HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Link 8L: POI-2
Inflow Area = 7.380 ac, 60.57% Impervious, Inflow Depth > 3.29" for 10-yr event
Inflow = 8.83 cfs @ 3.56 hrs, Volume= 2.025 af
Primary = 8.83 cfs @ 3.56 hrs, Volume= 2.025 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Link 8L: POI-2
Inflow
Primary
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)9
8
7
6
5
4
3
2
1
0
Inflow Area=7.380 ac
8.83 cfs
8.83 cfs
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 69HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Link 8L: POI-2
Time
(hours)
Inflow
(cfs)
Elevation
(feet)
Primary
(cfs)
0.00 0.00 0.00 0.00
2.50 0.04 0.00 0.04
5.00 5.33 0.00 5.33
7.50 0.40 0.00 0.40
10.00 0.12 0.00 0.12
12.50 0.11 0.00 0.11
15.00 0.11 0.00 0.11
17.50 0.10 0.00 0.10
20.00 0.10 0.00 0.10
22.50 0.10 0.00 0.10
25.00 0.09 0.00 0.09
27.50 0.09 0.00 0.09
30.00 0.09 0.00 0.09
32.50 0.08 0.00 0.08
35.00 0.08 0.00 0.08
37.50 0.07 0.00 0.07
40.00 0.07 0.00 0.07
42.50 0.07 0.00 0.07
45.00 0.06 0.00 0.06
47.50 0.06 0.00 0.06
50.00 0.05 0.00 0.05
52.50 0.05 0.00 0.05
55.00 0.05 0.00 0.05
57.50 0.04 0.00 0.04
60.00 0.04 0.00 0.04
62.50 0.03 0.00 0.03
65.00 0.03 0.00 0.03
67.50 0.02 0.00 0.02
70.00 0.02 0.00 0.02
72.50 0.02 0.00 0.02
75.00 0.01 0.00 0.01
77.50 0.01 0.00 0.01
80.00 0.01 0.00 0.01
82.50 0.01 0.00 0.01
85.00 0.01 0.00 0.01
87.50 0.01 0.00 0.01
90.00 0.01 0.00 0.01
92.50 0.00 0.00 0.00
95.00 0.00 0.00 0.00
97.50 0.00 0.00 0.00
100.00 0.00 0.00 0.00
102.50 0.00 0.00 0.00
105.00 0.00 0.00 0.00
107.50 0.00 0.00 0.00
110.00 0.00 0.00 0.00
112.50 0.00 0.00 0.00
115.00 0.00 0.00 0.00
117.50 0.00 0.00 0.00
120.00 0.00 0.00 0.00
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 70HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Link 9L: Combined
Inflow Area = 11.820 ac, 59.53% Impervious, Inflow Depth > 3.22" for 10-yr event
Inflow = 17.31 cfs @ 3.27 hrs, Volume= 3.170 af
Primary = 17.31 cfs @ 3.27 hrs, Volume= 3.170 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Link 9L: Combined
Inflow
Primary
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Inflow Area=11.820 ac
17.31 cfs
17.31 cfs
Charlotte 6-hr 10-yr Rainfall=4.93"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 71HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Link 9L: Combined
Time
(hours)
Inflow
(cfs)
Elevation
(feet)
Primary
(cfs)
0.00 0.00 0.00 0.00
2.50 0.07 0.00 0.07
5.00 6.87 0.00 6.87
7.50 0.53 0.00 0.53
10.00 0.17 0.00 0.17
12.50 0.17 0.00 0.17
15.00 0.16 0.00 0.16
17.50 0.16 0.00 0.16
20.00 0.15 0.00 0.15
22.50 0.14 0.00 0.14
25.00 0.14 0.00 0.14
27.50 0.13 0.00 0.13
30.00 0.13 0.00 0.13
32.50 0.12 0.00 0.12
35.00 0.12 0.00 0.12
37.50 0.11 0.00 0.11
40.00 0.10 0.00 0.10
42.50 0.10 0.00 0.10
45.00 0.09 0.00 0.09
47.50 0.09 0.00 0.09
50.00 0.08 0.00 0.08
52.50 0.07 0.00 0.07
55.00 0.07 0.00 0.07
57.50 0.06 0.00 0.06
60.00 0.06 0.00 0.06
62.50 0.05 0.00 0.05
65.00 0.04 0.00 0.04
67.50 0.04 0.00 0.04
70.00 0.03 0.00 0.03
72.50 0.02 0.00 0.02
75.00 0.02 0.00 0.02
77.50 0.02 0.00 0.02
80.00 0.01 0.00 0.01
82.50 0.01 0.00 0.01
85.00 0.01 0.00 0.01
87.50 0.01 0.00 0.01
90.00 0.01 0.00 0.01
92.50 0.01 0.00 0.01
95.00 0.01 0.00 0.01
97.50 0.01 0.00 0.01
100.00 0.01 0.00 0.01
102.50 0.01 0.00 0.01
105.00 0.00 0.00 0.00
107.50 0.00 0.00 0.00
110.00 0.00 0.00 0.00
112.50 0.00 0.00 0.00
115.00 0.00 0.00 0.00
117.50 0.00 0.00 0.00
120.00 0.00 0.00 0.00
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 72HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Time span=0.00-120.00 hrs, dt=0.05 hrs, 2401 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Runoff Area=6.010 ac 5.66% Impervious Runoff Depth=2.79"Subcatchment 1S: Ex DA-1
Flow Length=699' Tc=12.0 min CN=71 Runoff=26.73 cfs 1.396 af
Runoff Area=6.650 ac 3.08% Impervious Runoff Depth=2.69"Subcatchment 2S: Ex DA-2
Flow Length=790' Tc=13.1 min CN=70 Runoff=27.73 cfs 1.493 af
Runoff Area=3.130 ac 69.33% Impervious Runoff Depth=4.38"Subcatchment 4S: Prop DA-1
Tc=5.0 min CN=87 Runoff=25.92 cfs 1.143 af
Runoff Area=7.380 ac 60.57% Impervious Runoff Depth=4.17"Subcatchment 5S: Prop DA-2
Tc=5.0 min CN=85 Runoff=58.81 cfs 2.565 af
Runoff Area=1.310 ac 30.31% Impervious Runoff Depth=2.88"Subcatchment 6S: Prop DA-3
Tc=5.0 min CN=72 Runoff=7.46 cfs 0.314 af
Runoff Area=2.420 ac 0.00% Impervious Runoff Depth=3.16"Subcatchment 10S: DA-2 Bypass A
Tc=5.0 min CN=75 Runoff=15.09 cfs 0.638 af
Peak Elev=790.19' Storage=25,727 cf Inflow=25.92 cfs 1.143 afPond 4P: Wet Pond 1
Primary=7.56 cfs 1.140 af Secondary=0.00 cfs 0.000 af Outflow=7.56 cfs 1.140 af
Peak Elev=780.84' Storage=58,588 cf Inflow=58.81 cfs 2.565 afPond 5P: Wet Pond 2
Primary=20.29 cfs 2.547 af Secondary=1.14 cfs 0.012 af Outflow=21.43 cfs 2.559 af
Inflow=54.37 cfs 2.889 afLink 3L: Ex Drainage Areas
Primary=54.37 cfs 2.889 af
Inflow=13.15 cfs 1.455 afLink 7L: POI-1
Primary=13.15 cfs 1.455 af
Inflow=21.43 cfs 2.559 afLink 8L: POI-2
Primary=21.43 cfs 2.559 af
Inflow=31.88 cfs 4.013 afLink 9L: Combined
Primary=31.88 cfs 4.013 af
Total Runoff Area = 26.900 ac Runoff Volume = 7.549 af Average Runoff Depth = 3.37"
71.81% Pervious = 19.318 ac 28.19% Impervious = 7.582 ac
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 73HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Subcatchment 1S: Ex DA-1
Runoff = 26.73 cfs @ 3.25 hrs, Volume= 1.396 af, Depth= 2.79"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Charlotte 6-hr 25-yr Rainfall=5.86"
Area (ac) CN Description
5.670 69 50-75% Grass cover, Fair, HSG B
0.340 98 Paved parking, HSG B
6.010 71 Weighted Average
5.670 94.34% Pervious Area
0.340 5.66% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
7.0 75 0.0400 0.18 Sheet Flow, Sheet Flow
Grass: Short n= 0.150 P2= 2.28"
4.6 387 0.0400 1.40 Shallow Concentrated Flow, Shallow Concentrated Flow
Short Grass Pasture Kv= 7.0 fps
0.4 237 0.0100 10.72 64.33 Channel Flow, Roadside Swale
Area= 6.0 sf Perim= 3.0' r= 2.00'
n= 0.022 Earth, clean & straight
12.0 699 Total
Subcatchment 1S: Ex DA-1
Runoff
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
Charlotte 6-hr 25-yr
Rainfall=5.86"
Runoff Area=6.010 ac
Runoff Volume=1.396 af
Runoff Depth=2.79"
Flow Length=699'
Tc=12.0 min
CN=71
26.73 cfs
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 74HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 1S: Ex DA-1
Time
(hours)
Precip.
(inches)
Excess
(inches)
Runoff
(cfs)
0.00 0.00 0.00 0.00
2.50 1.04 0.01 0.16
5.00 5.60 2.58 1.60
7.50 5.86 2.79 0.00
10.00 5.86 2.79 0.00
12.50 5.86 2.79 0.00
15.00 5.86 2.79 0.00
17.50 5.86 2.79 0.00
20.00 5.86 2.79 0.00
22.50 5.86 2.79 0.00
25.00 5.86 2.79 0.00
27.50 5.86 2.79 0.00
30.00 5.86 2.79 0.00
32.50 5.86 2.79 0.00
35.00 5.86 2.79 0.00
37.50 5.86 2.79 0.00
40.00 5.86 2.79 0.00
42.50 5.86 2.79 0.00
45.00 5.86 2.79 0.00
47.50 5.86 2.79 0.00
50.00 5.86 2.79 0.00
52.50 5.86 2.79 0.00
55.00 5.86 2.79 0.00
57.50 5.86 2.79 0.00
60.00 5.86 2.79 0.00
62.50 5.86 2.79 0.00
65.00 5.86 2.79 0.00
67.50 5.86 2.79 0.00
70.00 5.86 2.79 0.00
72.50 5.86 2.79 0.00
75.00 5.86 2.79 0.00
77.50 5.86 2.79 0.00
80.00 5.86 2.79 0.00
82.50 5.86 2.79 0.00
85.00 5.86 2.79 0.00
87.50 5.86 2.79 0.00
90.00 5.86 2.79 0.00
92.50 5.86 2.79 0.00
95.00 5.86 2.79 0.00
97.50 5.86 2.79 0.00
100.00 5.86 2.79 0.00
102.50 5.86 2.79 0.00
105.00 5.86 2.79 0.00
107.50 5.86 2.79 0.00
110.00 5.86 2.79 0.00
112.50 5.86 2.79 0.00
115.00 5.86 2.79 0.00
117.50 5.86 2.79 0.00
120.00 5.86 2.79 0.00
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 75HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Subcatchment 2S: Ex DA-2
Runoff = 27.73 cfs @ 3.27 hrs, Volume= 1.493 af, Depth= 2.69"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Charlotte 6-hr 25-yr Rainfall=5.86"
Area (ac) CN Description
6.445 69 50-75% Grass cover, Fair, HSG B
0.205 98 Paved parking, HSG B
6.650 70 Weighted Average
6.445 96.92% Pervious Area
0.205 3.08% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
7.8 75 0.0300 0.16 Sheet Flow, Sheet Flow
Grass: Short n= 0.150 P2= 2.28"
4.8 400 0.0400 1.40 Shallow Concentrated Flow, Shallow Concentrated Flow
Short Grass Pasture Kv= 7.0 fps
0.5 315 0.0150 11.56 69.34 Channel Flow, Channel Flow
Area= 6.0 sf Perim= 3.0' r= 2.00'
n= 0.025 Earth, clean & winding
13.1 790 Total
Subcatchment 2S: Ex DA-2
Runoff
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
Charlotte 6-hr 25-yr
Rainfall=5.86"
Runoff Area=6.650 ac
Runoff Volume=1.493 af
Runoff Depth=2.69"
Flow Length=790'
Tc=13.1 min
CN=70
27.73 cfs
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 76HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 2S: Ex DA-2
Time
(hours)
Precip.
(inches)
Excess
(inches)
Runoff
(cfs)
0.00 0.00 0.00 0.00
2.50 1.04 0.01 0.08
5.00 5.60 2.49 1.75
7.50 5.86 2.69 0.00
10.00 5.86 2.69 0.00
12.50 5.86 2.69 0.00
15.00 5.86 2.69 0.00
17.50 5.86 2.69 0.00
20.00 5.86 2.69 0.00
22.50 5.86 2.69 0.00
25.00 5.86 2.69 0.00
27.50 5.86 2.69 0.00
30.00 5.86 2.69 0.00
32.50 5.86 2.69 0.00
35.00 5.86 2.69 0.00
37.50 5.86 2.69 0.00
40.00 5.86 2.69 0.00
42.50 5.86 2.69 0.00
45.00 5.86 2.69 0.00
47.50 5.86 2.69 0.00
50.00 5.86 2.69 0.00
52.50 5.86 2.69 0.00
55.00 5.86 2.69 0.00
57.50 5.86 2.69 0.00
60.00 5.86 2.69 0.00
62.50 5.86 2.69 0.00
65.00 5.86 2.69 0.00
67.50 5.86 2.69 0.00
70.00 5.86 2.69 0.00
72.50 5.86 2.69 0.00
75.00 5.86 2.69 0.00
77.50 5.86 2.69 0.00
80.00 5.86 2.69 0.00
82.50 5.86 2.69 0.00
85.00 5.86 2.69 0.00
87.50 5.86 2.69 0.00
90.00 5.86 2.69 0.00
92.50 5.86 2.69 0.00
95.00 5.86 2.69 0.00
97.50 5.86 2.69 0.00
100.00 5.86 2.69 0.00
102.50 5.86 2.69 0.00
105.00 5.86 2.69 0.00
107.50 5.86 2.69 0.00
110.00 5.86 2.69 0.00
112.50 5.86 2.69 0.00
115.00 5.86 2.69 0.00
117.50 5.86 2.69 0.00
120.00 5.86 2.69 0.00
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 77HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Subcatchment 4S: Prop DA-1
[49] Hint: Tc<2dt may require smaller dt
Runoff = 25.92 cfs @ 3.15 hrs, Volume= 1.143 af, Depth= 4.38"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Charlotte 6-hr 25-yr Rainfall=5.86"
Area (ac) CN Description
2.170 98 Paved parking, HSG B
0.960 61 >75% Grass cover, Good, HSG B
3.130 87 Weighted Average
0.960 30.67% Pervious Area
2.170 69.33% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, ToC
Subcatchment 4S: Prop DA-1
Runoff
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
Charlotte 6-hr 25-yr
Rainfall=5.86"
Runoff Area=3.130 ac
Runoff Volume=1.143 af
Runoff Depth=4.38"
Tc=5.0 min
CN=87
25.92 cfs
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 78HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 4S: Prop DA-1
Time
(hours)
Precip.
(inches)
Excess
(inches)
Runoff
(cfs)
0.00 0.00 0.00 0.00
2.50 1.04 0.24 1.55
5.00 5.60 4.13 0.96
7.50 5.86 4.38 0.00
10.00 5.86 4.38 0.00
12.50 5.86 4.38 0.00
15.00 5.86 4.38 0.00
17.50 5.86 4.38 0.00
20.00 5.86 4.38 0.00
22.50 5.86 4.38 0.00
25.00 5.86 4.38 0.00
27.50 5.86 4.38 0.00
30.00 5.86 4.38 0.00
32.50 5.86 4.38 0.00
35.00 5.86 4.38 0.00
37.50 5.86 4.38 0.00
40.00 5.86 4.38 0.00
42.50 5.86 4.38 0.00
45.00 5.86 4.38 0.00
47.50 5.86 4.38 0.00
50.00 5.86 4.38 0.00
52.50 5.86 4.38 0.00
55.00 5.86 4.38 0.00
57.50 5.86 4.38 0.00
60.00 5.86 4.38 0.00
62.50 5.86 4.38 0.00
65.00 5.86 4.38 0.00
67.50 5.86 4.38 0.00
70.00 5.86 4.38 0.00
72.50 5.86 4.38 0.00
75.00 5.86 4.38 0.00
77.50 5.86 4.38 0.00
80.00 5.86 4.38 0.00
82.50 5.86 4.38 0.00
85.00 5.86 4.38 0.00
87.50 5.86 4.38 0.00
90.00 5.86 4.38 0.00
92.50 5.86 4.38 0.00
95.00 5.86 4.38 0.00
97.50 5.86 4.38 0.00
100.00 5.86 4.38 0.00
102.50 5.86 4.38 0.00
105.00 5.86 4.38 0.00
107.50 5.86 4.38 0.00
110.00 5.86 4.38 0.00
112.50 5.86 4.38 0.00
115.00 5.86 4.38 0.00
117.50 5.86 4.38 0.00
120.00 5.86 4.38 0.00
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 79HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Subcatchment 5S: Prop DA-2
[49] Hint: Tc<2dt may require smaller dt
Runoff = 58.81 cfs @ 3.15 hrs, Volume= 2.565 af, Depth= 4.17"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Charlotte 6-hr 25-yr Rainfall=5.86"
Area (ac) CN Description
2.560 61 >75% Grass cover, Good, HSG B
1.600 98 Roofs, HSG B
2.870 98 Paved parking, HSG B
0.350 98 Water Surface, 0% imp, HSG B
7.380 85 Weighted Average
2.910 39.43% Pervious Area
4.470 60.57% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, Direct Entry
Subcatchment 5S: Prop DA-2
Runoff
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)65
60
55
50
45
40
35
30
25
20
15
10
5
0
Charlotte 6-hr 25-yr
Rainfall=5.86"
Runoff Area=7.380 ac
Runoff Volume=2.565 af
Runoff Depth=4.17"
Tc=5.0 min
CN=85
58.81 cfs
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 80HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 5S: Prop DA-2
Time
(hours)
Precip.
(inches)
Excess
(inches)
Runoff
(cfs)
0.00 0.00 0.00 0.00
2.50 1.04 0.19 3.13
5.00 5.60 3.92 2.23
7.50 5.86 4.17 0.00
10.00 5.86 4.17 0.00
12.50 5.86 4.17 0.00
15.00 5.86 4.17 0.00
17.50 5.86 4.17 0.00
20.00 5.86 4.17 0.00
22.50 5.86 4.17 0.00
25.00 5.86 4.17 0.00
27.50 5.86 4.17 0.00
30.00 5.86 4.17 0.00
32.50 5.86 4.17 0.00
35.00 5.86 4.17 0.00
37.50 5.86 4.17 0.00
40.00 5.86 4.17 0.00
42.50 5.86 4.17 0.00
45.00 5.86 4.17 0.00
47.50 5.86 4.17 0.00
50.00 5.86 4.17 0.00
52.50 5.86 4.17 0.00
55.00 5.86 4.17 0.00
57.50 5.86 4.17 0.00
60.00 5.86 4.17 0.00
62.50 5.86 4.17 0.00
65.00 5.86 4.17 0.00
67.50 5.86 4.17 0.00
70.00 5.86 4.17 0.00
72.50 5.86 4.17 0.00
75.00 5.86 4.17 0.00
77.50 5.86 4.17 0.00
80.00 5.86 4.17 0.00
82.50 5.86 4.17 0.00
85.00 5.86 4.17 0.00
87.50 5.86 4.17 0.00
90.00 5.86 4.17 0.00
92.50 5.86 4.17 0.00
95.00 5.86 4.17 0.00
97.50 5.86 4.17 0.00
100.00 5.86 4.17 0.00
102.50 5.86 4.17 0.00
105.00 5.86 4.17 0.00
107.50 5.86 4.17 0.00
110.00 5.86 4.17 0.00
112.50 5.86 4.17 0.00
115.00 5.86 4.17 0.00
117.50 5.86 4.17 0.00
120.00 5.86 4.17 0.00
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 81HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Subcatchment 6S: Prop DA-3
[49] Hint: Tc<2dt may require smaller dt
Runoff = 7.46 cfs @ 3.16 hrs, Volume= 0.314 af, Depth= 2.88"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Charlotte 6-hr 25-yr Rainfall=5.86"
Area (ac) CN Description
0.397 98 Paved parking, HSG B
0.913 61 >75% Grass cover, Good, HSG B
1.310 72 Weighted Average
0.913 69.69% Pervious Area
0.397 30.31% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, Time of Concentration
Subcatchment 6S: Prop DA-3
Runoff
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)8
7
6
5
4
3
2
1
0
Charlotte 6-hr 25-yr
Rainfall=5.86"
Runoff Area=1.310 ac
Runoff Volume=0.314 af
Runoff Depth=2.88"
Tc=5.0 min
CN=72
7.46 cfs
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 82HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 6S: Prop DA-3
Time
(hours)
Precip.
(inches)
Excess
(inches)
Runoff
(cfs)
0.00 0.00 0.00 0.00
2.50 1.04 0.02 0.11
5.00 5.60 2.67 0.34
7.50 5.86 2.88 0.00
10.00 5.86 2.88 0.00
12.50 5.86 2.88 0.00
15.00 5.86 2.88 0.00
17.50 5.86 2.88 0.00
20.00 5.86 2.88 0.00
22.50 5.86 2.88 0.00
25.00 5.86 2.88 0.00
27.50 5.86 2.88 0.00
30.00 5.86 2.88 0.00
32.50 5.86 2.88 0.00
35.00 5.86 2.88 0.00
37.50 5.86 2.88 0.00
40.00 5.86 2.88 0.00
42.50 5.86 2.88 0.00
45.00 5.86 2.88 0.00
47.50 5.86 2.88 0.00
50.00 5.86 2.88 0.00
52.50 5.86 2.88 0.00
55.00 5.86 2.88 0.00
57.50 5.86 2.88 0.00
60.00 5.86 2.88 0.00
62.50 5.86 2.88 0.00
65.00 5.86 2.88 0.00
67.50 5.86 2.88 0.00
70.00 5.86 2.88 0.00
72.50 5.86 2.88 0.00
75.00 5.86 2.88 0.00
77.50 5.86 2.88 0.00
80.00 5.86 2.88 0.00
82.50 5.86 2.88 0.00
85.00 5.86 2.88 0.00
87.50 5.86 2.88 0.00
90.00 5.86 2.88 0.00
92.50 5.86 2.88 0.00
95.00 5.86 2.88 0.00
97.50 5.86 2.88 0.00
100.00 5.86 2.88 0.00
102.50 5.86 2.88 0.00
105.00 5.86 2.88 0.00
107.50 5.86 2.88 0.00
110.00 5.86 2.88 0.00
112.50 5.86 2.88 0.00
115.00 5.86 2.88 0.00
117.50 5.86 2.88 0.00
120.00 5.86 2.88 0.00
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 83HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Subcatchment 10S: DA-2 Bypass A
[49] Hint: Tc<2dt may require smaller dt
Runoff = 15.09 cfs @ 3.15 hrs, Volume= 0.638 af, Depth= 3.16"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Charlotte 6-hr 25-yr Rainfall=5.86"
Area (ac) CN Description
* 2.420 75
2.420 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 10S: DA-2 Bypass A
Runoff
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Charlotte 6-hr 25-yr
Rainfall=5.86"
Runoff Area=2.420 ac
Runoff Volume=0.638 af
Runoff Depth=3.16"
Tc=5.0 min
CN=75
15.09 cfs
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 84HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 10S: DA-2 Bypass A
Time
(hours)
Precip.
(inches)
Excess
(inches)
Runoff
(cfs)
0.00 0.00 0.00 0.00
2.50 1.04 0.04 0.36
5.00 5.60 2.94 0.65
7.50 5.86 3.16 0.00
10.00 5.86 3.16 0.00
12.50 5.86 3.16 0.00
15.00 5.86 3.16 0.00
17.50 5.86 3.16 0.00
20.00 5.86 3.16 0.00
22.50 5.86 3.16 0.00
25.00 5.86 3.16 0.00
27.50 5.86 3.16 0.00
30.00 5.86 3.16 0.00
32.50 5.86 3.16 0.00
35.00 5.86 3.16 0.00
37.50 5.86 3.16 0.00
40.00 5.86 3.16 0.00
42.50 5.86 3.16 0.00
45.00 5.86 3.16 0.00
47.50 5.86 3.16 0.00
50.00 5.86 3.16 0.00
52.50 5.86 3.16 0.00
55.00 5.86 3.16 0.00
57.50 5.86 3.16 0.00
60.00 5.86 3.16 0.00
62.50 5.86 3.16 0.00
65.00 5.86 3.16 0.00
67.50 5.86 3.16 0.00
70.00 5.86 3.16 0.00
72.50 5.86 3.16 0.00
75.00 5.86 3.16 0.00
77.50 5.86 3.16 0.00
80.00 5.86 3.16 0.00
82.50 5.86 3.16 0.00
85.00 5.86 3.16 0.00
87.50 5.86 3.16 0.00
90.00 5.86 3.16 0.00
92.50 5.86 3.16 0.00
95.00 5.86 3.16 0.00
97.50 5.86 3.16 0.00
100.00 5.86 3.16 0.00
102.50 5.86 3.16 0.00
105.00 5.86 3.16 0.00
107.50 5.86 3.16 0.00
110.00 5.86 3.16 0.00
112.50 5.86 3.16 0.00
115.00 5.86 3.16 0.00
117.50 5.86 3.16 0.00
120.00 5.86 3.16 0.00
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 85HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Pond 4P: Wet Pond 1
Inflow Area = 3.130 ac, 69.33% Impervious, Inflow Depth = 4.38" for 25-yr event
Inflow = 25.92 cfs @ 3.15 hrs, Volume= 1.143 af
Outflow = 7.56 cfs @ 3.39 hrs, Volume= 1.140 af, Atten= 71%, Lag= 14.4 min
Primary = 7.56 cfs @ 3.39 hrs, Volume= 1.140 af
Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Peak Elev= 790.19' @ 3.39 hrs Surf.Area= 11,438 sf Storage= 25,727 cf
Plug-Flow detention time= 364.5 min calculated for 1.140 af (100% of inflow)
Center-of-Mass det. time= 364.1 min ( 569.4 - 205.3 )
Volume Invert Avail.Storage Storage Description
#1 787.50' 48,545 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic-feet) (cubic-feet)
787.50 7,516 0 0
789.00 9,858 13,031 13,031
790.00 11,185 10,522 23,552
791.00 12,500 11,843 35,395
792.00 13,800 13,150 48,545
Device Routing Invert Outlet Devices
#1 Primary 787.50'24.0" Round Culvert
L= 23.7' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 787.50' / 787.38' S= 0.0051 '/' Cc= 0.900
n= 0.013, Flow Area= 3.14 sf
#2 Device 1 787.50'1.5" Vert. Orifice/Grate C= 0.600
#3 Device 1 788.50'24.0" W x 8.0" H Vert. Orifice/Grate C= 0.600
#4 Device 1 790.50'16.0' long Sharp-Crested Vee/Trap Weir Cv= 2.62 (C= 3.28)
#5 Secondary 791.00'20.0' long x 10.0' breadth Broad-Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64
Primary OutFlow Max=7.56 cfs @ 3.39 hrs HW=790.19' (Free Discharge)
1=Culvert (Passes 7.56 cfs of 16.94 cfs potential flow)
2=Orifice/Grate (Orifice Controls 0.10 cfs @ 7.81 fps)
3=Orifice/Grate (Orifice Controls 7.46 cfs @ 5.59 fps)
4=Sharp-Crested Vee/Trap Weir ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=787.50' (Free Discharge)
5=Broad-Crested Rectangular Weir ( Controls 0.00 cfs)
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 86HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Pond 4P: Wet Pond 1
Inflow
Outflow
Primary
Secondary
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
Inflow Area=3.130 ac
Peak Elev=790.19'
Storage=25,727 cf
25.92 cfs
7.56 cfs
7.56 cfs
0.00 cfs
Pond 4P: Wet Pond 1
Total
Primary
Secondary
Stage-Discharge
Discharge (cfs)
80706050403020100Elevation (feet)792
791
790
789
788
Culvert + Orifice/Grate
Orifice/Grate
Sharp-Crested Vee/Trap Weir
Broad-Crested Rectangular Weir
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 87HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Pond 4P: Wet Pond 1
Surface
Storage
Stage-Area-Storage
Storage (cubic-feet)
45,00040,00035,00030,00025,00020,00015,00010,0005,0000
Surface/Horizontal/Wetted Area (sq-ft)
13,00012,00011,00010,0009,0008,0007,0006,0005,0004,0003,0002,0001,0000
Elevation (feet)792
791
790
789
788
Custom Stage Data
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 88HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Pond 4P: Wet Pond 1
Time
(hours)
Inflow
(cfs)
Storage
(cubic-feet)
Elevation
(feet)
Outflow
(cfs)
Primary
(cfs)
Secondary
(cfs)
0.00 0.00 0 787.50 0.00 0.00 0.00
2.50 1.55 2,277 787.79 0.03 0.03 0.00
5.00 0.96 12,010 788.90 1.67 1.67 0.00
7.50 0.00 8,777 788.55 0.14 0.14 0.00
10.00 0.00 8,098 788.48 0.06 0.06 0.00
12.50 0.00 7,597 788.42 0.05 0.05 0.00
15.00 0.00 7,112 788.37 0.05 0.05 0.00
17.50 0.00 6,642 788.31 0.05 0.05 0.00
20.00 0.00 6,189 788.26 0.05 0.05 0.00
22.50 0.00 5,752 788.21 0.05 0.05 0.00
25.00 0.00 5,332 788.16 0.05 0.05 0.00
27.50 0.00 4,928 788.12 0.04 0.04 0.00
30.00 0.00 4,541 788.07 0.04 0.04 0.00
32.50 0.00 4,170 788.03 0.04 0.04 0.00
35.00 0.00 3,817 787.98 0.04 0.04 0.00
37.50 0.00 3,480 787.94 0.04 0.04 0.00
40.00 0.00 3,161 787.90 0.03 0.03 0.00
42.50 0.00 2,859 787.87 0.03 0.03 0.00
45.00 0.00 2,575 787.83 0.03 0.03 0.00
47.50 0.00 2,308 787.80 0.03 0.03 0.00
50.00 0.00 2,059 787.77 0.03 0.03 0.00
52.50 0.00 1,828 787.74 0.02 0.02 0.00
55.00 0.00 1,615 787.71 0.02 0.02 0.00
57.50 0.00 1,420 787.69 0.02 0.02 0.00
60.00 0.00 1,244 787.66 0.02 0.02 0.00
62.50 0.00 1,085 787.64 0.02 0.02 0.00
65.00 0.00 945 787.62 0.01 0.01 0.00
67.50 0.00 826 787.61 0.01 0.01 0.00
70.00 0.00 724 787.60 0.01 0.01 0.00
72.50 0.00 638 787.58 0.01 0.01 0.00
75.00 0.00 565 787.57 0.01 0.01 0.00
77.50 0.00 505 787.57 0.01 0.01 0.00
80.00 0.00 454 787.56 0.01 0.01 0.00
82.50 0.00 412 787.55 0.00 0.00 0.00
85.00 0.00 376 787.55 0.00 0.00 0.00
87.50 0.00 347 787.55 0.00 0.00 0.00
90.00 0.00 321 787.54 0.00 0.00 0.00
92.50 0.00 298 787.54 0.00 0.00 0.00
95.00 0.00 276 787.54 0.00 0.00 0.00
97.50 0.00 256 787.53 0.00 0.00 0.00
100.00 0.00 237 787.53 0.00 0.00 0.00
102.50 0.00 220 787.53 0.00 0.00 0.00
105.00 0.00 204 787.53 0.00 0.00 0.00
107.50 0.00 189 787.52 0.00 0.00 0.00
110.00 0.00 175 787.52 0.00 0.00 0.00
112.50 0.00 162 787.52 0.00 0.00 0.00
115.00 0.00 150 787.52 0.00 0.00 0.00
117.50 0.00 139 787.52 0.00 0.00 0.00
120.00 0.00 129 787.52 0.00 0.00 0.00
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 89HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 4P: Wet Pond 1
Elevation
(feet)
Discharge
(cfs)
Primary
(cfs)
Secondary
(cfs)
787.50 0.00 0.00 0.00
787.55 0.00 0.00 0.00
787.60 0.01 0.01 0.00
787.65 0.02 0.02 0.00
787.70 0.02 0.02 0.00
787.75 0.03 0.03 0.00
787.80 0.03 0.03 0.00
787.85 0.03 0.03 0.00
787.90 0.03 0.03 0.00
787.95 0.04 0.04 0.00
788.00 0.04 0.04 0.00
788.05 0.04 0.04 0.00
788.10 0.04 0.04 0.00
788.15 0.05 0.05 0.00
788.20 0.05 0.05 0.00
788.25 0.05 0.05 0.00
788.30 0.05 0.05 0.00
788.35 0.05 0.05 0.00
788.40 0.05 0.05 0.00
788.45 0.06 0.06 0.00
788.50 0.06 0.06 0.00
788.55 0.13 0.13 0.00
788.60 0.26 0.26 0.00
788.65 0.43 0.43 0.00
788.70 0.64 0.64 0.00
788.75 0.87 0.87 0.00
788.80 1.12 1.12 0.00
788.85 1.40 1.40 0.00
788.90 1.69 1.69 0.00
788.95 2.01 2.01 0.00
789.00 2.34 2.34 0.00
789.05 2.69 2.69 0.00
789.10 3.06 3.06 0.00
789.15 3.44 3.44 0.00
789.20 3.80 3.80 0.00
789.25 4.09 4.09 0.00
789.30 4.36 4.36 0.00
789.35 4.61 4.61 0.00
789.40 4.84 4.84 0.00
789.45 5.06 5.06 0.00
789.50 5.27 5.27 0.00
789.55 5.47 5.47 0.00
789.60 5.66 5.66 0.00
789.65 5.85 5.85 0.00
789.70 6.03 6.03 0.00
789.75 6.20 6.20 0.00
789.80 6.37 6.37 0.00
789.85 6.53 6.53 0.00
789.90 6.69 6.69 0.00
789.95 6.85 6.85 0.00
790.00 7.00 7.00 0.00
790.05 7.15 7.15 0.00
Elevation
(feet)
Discharge
(cfs)
Primary
(cfs)
Secondary
(cfs)
790.10 7.30 7.30 0.00
790.15 7.44 7.44 0.00
790.20 7.58 7.58 0.00
790.25 7.72 7.72 0.00
790.30 7.86 7.86 0.00
790.35 7.99 7.99 0.00
790.40 8.12 8.12 0.00
790.45 8.25 8.25 0.00
790.50 8.38 8.38 0.00
790.55 9.09 9.09 0.00
790.60 10.28 10.28 0.00
790.65 11.79 11.79 0.00
790.70 13.55 13.55 0.00
790.75 15.53 15.53 0.00
790.80 17.71 17.71 0.00
790.85 20.06 20.06 0.00
790.90 22.58 22.58 0.00
790.95 23.58 23.58 0.00
791.00 23.92 23.92 0.00
791.05 24.71 24.16 0.56
791.10 25.97 24.39 1.57
791.15 27.52 24.62 2.89
791.20 29.31 24.86 4.45
791.25 31.35 25.08 6.27
791.30 33.61 25.31 8.30
791.35 36.07 25.54 10.53
791.40 38.71 25.76 12.95
791.45 41.65 25.98 15.67
791.50 44.80 26.20 18.60
791.55 48.16 26.42 21.74
791.60 51.73 26.63 25.10
791.65 55.12 26.85 28.27
791.70 58.63 27.06 31.57
791.75 62.25 27.27 34.98
791.80 65.98 27.48 38.50
791.85 69.81 27.69 42.12
791.90 73.74 27.89 45.85
791.95 77.77 28.10 49.68
792.00 81.90 28.30 53.60
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 90HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 4P: Wet Pond 1
Elevation
(feet)
Surface
(sq-ft)
Storage
(cubic-feet)
787.50 7,516 0
787.55 7,594 378
787.60 7,672 759
787.65 7,750 1,145
787.70 7,828 1,534
787.75 7,906 1,928
787.80 7,984 2,325
787.85 8,062 2,726
787.90 8,141 3,131
787.95 8,219 3,540
788.00 8,297 3,953
788.05 8,375 4,370
788.10 8,453 4,791
788.15 8,531 5,215
788.20 8,609 5,644
788.25 8,687 6,076
788.30 8,765 6,512
788.35 8,843 6,953
788.40 8,921 7,397
788.45 8,999 7,845
788.50 9,077 8,297
788.55 9,155 8,752
788.60 9,233 9,212
788.65 9,312 9,676
788.70 9,390 10,143
788.75 9,468 10,615
788.80 9,546 11,090
788.85 9,624 11,569
788.90 9,702 12,053
788.95 9,780 12,540
789.00 9,858 13,031
789.05 9,924 13,525
789.10 9,991 14,023
789.15 10,057 14,524
789.20 10,123 15,029
789.25 10,190 15,536
789.30 10,256 16,048
789.35 10,322 16,562
789.40 10,389 17,080
789.45 10,455 17,601
789.50 10,522 18,125
789.55 10,588 18,653
789.60 10,654 19,184
789.65 10,721 19,719
789.70 10,787 20,256
789.75 10,853 20,797
789.80 10,920 21,342
789.85 10,986 21,889
789.90 11,052 22,440
789.95 11,119 22,994
790.00 11,185 23,552
790.05 11,251 24,113
Elevation
(feet)
Surface
(sq-ft)
Storage
(cubic-feet)
790.10 11,317 24,677
790.15 11,382 25,245
790.20 11,448 25,815
790.25 11,514 26,389
790.30 11,579 26,967
790.35 11,645 27,547
790.40 11,711 28,131
790.45 11,777 28,718
790.50 11,843 29,309
790.55 11,908 29,903
790.60 11,974 30,500
790.65 12,040 31,100
790.70 12,106 31,704
790.75 12,171 32,311
790.80 12,237 32,921
790.85 12,303 33,534
790.90 12,368 34,151
790.95 12,434 34,771
791.00 12,500 35,395
791.05 12,565 36,021
791.10 12,630 36,651
791.15 12,695 37,284
791.20 12,760 37,921
791.25 12,825 38,560
791.30 12,890 39,203
791.35 12,955 39,849
791.40 13,020 40,498
791.45 13,085 41,151
791.50 13,150 41,807
791.55 13,215 42,466
791.60 13,280 43,129
791.65 13,345 43,794
791.70 13,410 44,463
791.75 13,475 45,135
791.80 13,540 45,810
791.85 13,605 46,489
791.90 13,670 47,171
791.95 13,735 47,856
792.00 13,800 48,545
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 91HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Pond 5P: Wet Pond 2
Inflow Area = 7.380 ac, 60.57% Impervious, Inflow Depth = 4.17" for 25-yr event
Inflow = 58.81 cfs @ 3.15 hrs, Volume= 2.565 af
Outflow = 21.43 cfs @ 3.35 hrs, Volume= 2.559 af, Atten= 64%, Lag= 12.3 min
Primary = 20.29 cfs @ 3.35 hrs, Volume= 2.547 af
Secondary = 1.14 cfs @ 3.35 hrs, Volume= 0.012 af
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Peak Elev= 780.84' @ 3.35 hrs Surf.Area= 19,327 sf Storage= 58,588 cf
Plug-Flow detention time= 337.2 min calculated for 2.558 af (100% of inflow)
Center-of-Mass det. time= 339.4 min ( 546.2 - 206.8 )
Volume Invert Avail.Storage Storage Description
#1 777.00' 82,420 cf Custom Stage Data (Irregular) Listed below (Recalc)
Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area
(feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft)
777.00 11,324 654.0 0 0 11,324
778.00 13,317 673.0 12,307 12,307 13,437
779.00 15,366 692.0 14,329 26,636 15,611
780.00 17,509 713.0 16,426 43,062 18,062
781.00 19,675 731.0 18,581 61,644 20,253
782.00 21,898 750.0 20,777 82,420 22,611
Device Routing Invert Outlet Devices
#1 Primary 776.50'24.0" Round Culvert L= 77.6' Ke= 0.500
Inlet / Outlet Invert= 776.50' / 775.72' S= 0.0101 '/' Cc= 0.900
n= 0.013, Flow Area= 3.14 sf
#2 Device 1 777.00'2.0" Vert. Orifice/Grate C= 0.600
#3 Device 1 778.30'24.0" W x 8.0" H Vert. Orifice/Grate C= 0.600
#4 Primary 780.50'16.0' long Sharp-Crested Vee/Trap Weir Cv= 2.62 (C= 3.28)
#5 Secondary 780.75'12.0' long Sharp-Crested Vee/Trap Weir Cv= 2.62 (C= 3.28)
Primary OutFlow Max=20.17 cfs @ 3.35 hrs HW=780.84' (Free Discharge)
1=Culvert (Passes 9.73 cfs of 27.65 cfs potential flow)
2=Orifice/Grate (Orifice Controls 0.20 cfs @ 9.33 fps)
3=Orifice/Grate (Orifice Controls 9.53 cfs @ 7.15 fps)
4=Sharp-Crested Vee/Trap Weir (Weir Controls 10.44 cfs @ 1.91 fps)
Secondary OutFlow Max=1.08 cfs @ 3.35 hrs HW=780.84' (Free Discharge)
5=Sharp-Crested Vee/Trap Weir (Weir Controls 1.08 cfs @ 0.99 fps)
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 92HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Pond 5P: Wet Pond 2
Inflow
Outflow
Primary
Secondary
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)65
60
55
50
45
40
35
30
25
20
15
10
5
0
Inflow Area=7.380 ac
Peak Elev=780.84'
Storage=58,588 cf
58.81 cfs
21.43 cfs
20.29 cfs
1.14 cfs
Pond 5P: Wet Pond 2
Total
Primary
Secondary
Stage-Discharge
Discharge (cfs)
160140120100806040200Elevation (feet)782
781
780
779
778
777
Orifice/Grate
Orifice/Grate
Sharp-Crested Vee/Trap Weir Sharp-Crested Vee/Trap Weir
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 93HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Pond 5P: Wet Pond 2
Surface
Storage
Stage-Area-Storage
Storage (cubic-feet)
80,00070,00060,00050,00040,00030,00020,00010,0000
Surface/Horizontal/Wetted Area (sq-ft)
20,00018,00016,00014,00012,00010,0008,0006,0004,0002,0000
Elevation (feet)782
781
780
779
778
777
Custom Stage Data
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 94HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Pond 5P: Wet Pond 2
Time
(hours)
Inflow
(cfs)
Storage
(cubic-feet)
Elevation
(feet)
Outflow
(cfs)
Primary
(cfs)
Secondary
(cfs)
0.00 0.00 0 777.00 0.00 0.00 0.00
2.50 3.13 4,124 777.35 0.05 0.05 0.00
5.00 2.23 34,781 779.51 6.14 6.14 0.00
7.50 0.00 18,392 778.44 0.47 0.47 0.00
10.00 0.00 16,391 778.30 0.12 0.12 0.00
12.50 0.00 15,364 778.23 0.11 0.11 0.00
15.00 0.00 14,370 778.15 0.11 0.11 0.00
17.50 0.00 13,408 778.08 0.10 0.10 0.00
20.00 0.00 12,480 778.01 0.10 0.10 0.00
22.50 0.00 11,586 777.95 0.10 0.10 0.00
25.00 0.00 10,725 777.88 0.09 0.09 0.00
27.50 0.00 9,898 777.82 0.09 0.09 0.00
30.00 0.00 9,106 777.75 0.09 0.09 0.00
32.50 0.00 8,349 777.70 0.08 0.08 0.00
35.00 0.00 7,627 777.64 0.08 0.08 0.00
37.50 0.00 6,940 777.58 0.07 0.07 0.00
40.00 0.00 6,290 777.53 0.07 0.07 0.00
42.50 0.00 5,675 777.48 0.07 0.07 0.00
45.00 0.00 5,097 777.43 0.06 0.06 0.00
47.50 0.00 4,556 777.39 0.06 0.06 0.00
50.00 0.00 4,052 777.35 0.05 0.05 0.00
52.50 0.00 3,585 777.31 0.05 0.05 0.00
55.00 0.00 3,156 777.27 0.05 0.05 0.00
57.50 0.00 2,764 777.24 0.04 0.04 0.00
60.00 0.00 2,411 777.21 0.04 0.04 0.00
62.50 0.00 2,096 777.18 0.03 0.03 0.00
65.00 0.00 1,819 777.16 0.03 0.03 0.00
67.50 0.00 1,580 777.14 0.02 0.02 0.00
70.00 0.00 1,382 777.12 0.02 0.02 0.00
72.50 0.00 1,219 777.11 0.02 0.02 0.00
75.00 0.00 1,085 777.09 0.01 0.01 0.00
77.50 0.00 971 777.09 0.01 0.01 0.00
80.00 0.00 875 777.08 0.01 0.01 0.00
82.50 0.00 794 777.07 0.01 0.01 0.00
85.00 0.00 725 777.06 0.01 0.01 0.00
87.50 0.00 666 777.06 0.01 0.01 0.00
90.00 0.00 617 777.05 0.01 0.01 0.00
92.50 0.00 574 777.05 0.00 0.00 0.00
95.00 0.00 538 777.05 0.00 0.00 0.00
97.50 0.00 503 777.04 0.00 0.00 0.00
100.00 0.00 471 777.04 0.00 0.00 0.00
102.50 0.00 441 777.04 0.00 0.00 0.00
105.00 0.00 412 777.04 0.00 0.00 0.00
107.50 0.00 386 777.03 0.00 0.00 0.00
110.00 0.00 361 777.03 0.00 0.00 0.00
112.50 0.00 338 777.03 0.00 0.00 0.00
115.00 0.00 316 777.03 0.00 0.00 0.00
117.50 0.00 296 777.03 0.00 0.00 0.00
120.00 0.00 277 777.02 0.00 0.00 0.00
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 95HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 5P: Wet Pond 2
Elevation
(feet)
Discharge
(cfs)
Primary
(cfs)
Secondary
(cfs)
777.00 0.00 0.00 0.00
777.05 0.00 0.00 0.00
777.10 0.01 0.01 0.00
777.15 0.03 0.03 0.00
777.20 0.04 0.04 0.00
777.25 0.04 0.04 0.00
777.30 0.05 0.05 0.00
777.35 0.05 0.05 0.00
777.40 0.06 0.06 0.00
777.45 0.06 0.06 0.00
777.50 0.07 0.07 0.00
777.55 0.07 0.07 0.00
777.60 0.08 0.08 0.00
777.65 0.08 0.08 0.00
777.70 0.08 0.08 0.00
777.75 0.09 0.09 0.00
777.80 0.09 0.09 0.00
777.85 0.09 0.09 0.00
777.90 0.09 0.09 0.00
777.95 0.10 0.10 0.00
778.00 0.10 0.10 0.00
778.05 0.10 0.10 0.00
778.10 0.11 0.11 0.00
778.15 0.11 0.11 0.00
778.20 0.11 0.11 0.00
778.25 0.11 0.11 0.00
778.30 0.12 0.12 0.00
778.35 0.19 0.19 0.00
778.40 0.32 0.32 0.00
778.45 0.50 0.50 0.00
778.50 0.70 0.70 0.00
778.55 0.93 0.93 0.00
778.60 1.18 1.18 0.00
778.65 1.46 1.46 0.00
778.70 1.76 1.76 0.00
778.75 2.07 2.07 0.00
778.80 2.41 2.41 0.00
778.85 2.76 2.76 0.00
778.90 3.13 3.13 0.00
778.95 3.51 3.51 0.00
779.00 3.87 3.87 0.00
779.05 4.16 4.16 0.00
779.10 4.43 4.43 0.00
779.15 4.68 4.68 0.00
779.20 4.91 4.91 0.00
779.25 5.13 5.13 0.00
779.30 5.34 5.34 0.00
779.35 5.54 5.54 0.00
779.40 5.74 5.74 0.00
779.45 5.92 5.92 0.00
779.50 6.10 6.10 0.00
779.55 6.28 6.28 0.00
Elevation
(feet)
Discharge
(cfs)
Primary
(cfs)
Secondary
(cfs)
779.60 6.45 6.45 0.00
779.65 6.61 6.61 0.00
779.70 6.77 6.77 0.00
779.75 6.93 6.93 0.00
779.80 7.08 7.08 0.00
779.85 7.23 7.23 0.00
779.90 7.38 7.38 0.00
779.95 7.52 7.52 0.00
780.00 7.67 7.67 0.00
780.05 7.80 7.80 0.00
780.10 7.94 7.94 0.00
780.15 8.07 8.07 0.00
780.20 8.21 8.21 0.00
780.25 8.34 8.34 0.00
780.30 8.46 8.46 0.00
780.35 8.59 8.59 0.00
780.40 8.71 8.71 0.00
780.45 8.83 8.83 0.00
780.50 8.95 8.95 0.00
780.55 9.66 9.66 0.00
780.60 10.85 10.85 0.00
780.65 12.35 12.35 0.00
780.70 14.11 14.11 0.00
780.75 16.08 16.08 0.00
780.80 18.69 18.25 0.44
780.85 21.85 20.60 1.24
780.90 25.40 23.12 2.28
780.95 29.30 25.79 3.52
781.00 33.51 28.60 4.91
781.05 38.01 31.56 6.46
781.10 42.78 34.64 8.14
781.15 47.79 37.85 9.94
781.20 53.04 41.18 11.86
781.25 58.52 44.63 13.89
781.30 64.22 48.19 16.03
781.35 70.12 51.86 18.26
781.40 76.23 55.63 20.60
781.45 82.52 59.51 23.02
781.50 89.01 63.48 25.53
781.55 95.68 67.56 28.12
781.60 102.53 71.73 30.80
781.65 109.55 75.99 33.55
781.70 116.73 80.34 36.39
781.75 124.09 84.79 39.30
781.80 131.60 89.32 42.28
781.85 139.27 93.93 45.34
781.90 147.10 98.63 48.47
781.95 155.07 103.41 51.66
782.00 163.20 108.27 54.92
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 96HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 5P: Wet Pond 2
Elevation
(feet)
Surface
(sq-ft)
Storage
(cubic-feet)
777.00 11,324 0
777.05 11,420 569
777.10 11,516 1,142
777.15 11,613 1,720
777.20 11,710 2,303
777.25 11,807 2,891
777.30 11,905 3,484
777.35 12,003 4,082
777.40 12,102 4,684
777.45 12,201 5,292
777.50 12,300 5,904
777.55 12,400 6,522
777.60 12,500 7,144
777.65 12,601 7,772
777.70 12,702 8,405
777.75 12,804 9,042
777.80 12,905 9,685
777.85 13,008 10,333
777.90 13,110 10,986
777.95 13,214 11,644
778.00 13,317 12,307
778.05 13,416 12,975
778.10 13,515 13,649
778.15 13,615 14,327
778.20 13,715 15,010
778.25 13,816 15,698
778.30 13,916 16,392
778.35 14,017 17,090
778.40 14,119 17,793
778.45 14,221 18,502
778.50 14,323 19,216
778.55 14,426 19,934
778.60 14,529 20,658
778.65 14,632 21,387
778.70 14,736 22,121
778.75 14,840 22,861
778.80 14,944 23,605
778.85 15,049 24,355
778.90 15,155 25,110
778.95 15,260 25,871
779.00 15,366 26,636
779.05 15,470 27,407
779.10 15,574 28,183
779.15 15,679 28,965
779.20 15,783 29,751
779.25 15,889 30,543
779.30 15,994 31,340
779.35 16,100 32,142
779.40 16,206 32,950
779.45 16,313 33,763
779.50 16,420 34,581
779.55 16,527 35,405
Elevation
(feet)
Surface
(sq-ft)
Storage
(cubic-feet)
779.60 16,635 36,234
779.65 16,743 37,069
779.70 16,851 37,908
779.75 16,960 38,754
779.80 17,069 39,604
779.85 17,179 40,461
779.90 17,288 41,322
779.95 17,399 42,189
780.00 17,509 43,062
780.05 17,614 43,940
780.10 17,720 44,824
780.15 17,826 45,712
780.20 17,932 46,606
780.25 18,039 47,505
780.30 18,146 48,410
780.35 18,253 49,320
780.40 18,360 50,235
780.45 18,468 51,156
780.50 18,576 52,082
780.55 18,685 53,014
780.60 18,793 53,951
780.65 18,903 54,893
780.70 19,012 55,841
780.75 19,122 56,794
780.80 19,232 57,753
780.85 19,342 58,717
780.90 19,453 59,687
780.95 19,564 60,663
781.00 19,675 61,644
781.05 19,783 62,630
781.10 19,892 63,622
781.15 20,001 64,619
781.20 20,110 65,622
781.25 20,220 66,630
781.30 20,329 67,644
781.35 20,440 68,663
781.40 20,550 69,688
781.45 20,661 70,718
781.50 20,772 71,754
781.55 20,883 72,795
781.60 20,995 73,842
781.65 21,106 74,895
781.70 21,219 75,953
781.75 21,331 77,017
781.80 21,444 78,086
781.85 21,557 79,161
781.90 21,670 80,242
781.95 21,784 81,328
782.00 21,898 82,420
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 97HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Link 3L: Ex Drainage Areas
Inflow Area = 12.660 ac, 4.30% Impervious, Inflow Depth = 2.74" for 25-yr event
Inflow = 54.37 cfs @ 3.26 hrs, Volume= 2.889 af
Primary = 54.37 cfs @ 3.26 hrs, Volume= 2.889 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Link 3L: Ex Drainage Areas
Inflow
Primary
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)60
55
50
45
40
35
30
25
20
15
10
5
0
Inflow Area=12.660 ac
54.37 cfs
54.37 cfs
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 98HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Link 3L: Ex Drainage Areas
Time
(hours)
Inflow
(cfs)
Elevation
(feet)
Primary
(cfs)
0.00 0.00 0.00 0.00
2.50 0.24 0.00 0.24
5.00 3.35 0.00 3.35
7.50 0.00 0.00 0.00
10.00 0.00 0.00 0.00
12.50 0.00 0.00 0.00
15.00 0.00 0.00 0.00
17.50 0.00 0.00 0.00
20.00 0.00 0.00 0.00
22.50 0.00 0.00 0.00
25.00 0.00 0.00 0.00
27.50 0.00 0.00 0.00
30.00 0.00 0.00 0.00
32.50 0.00 0.00 0.00
35.00 0.00 0.00 0.00
37.50 0.00 0.00 0.00
40.00 0.00 0.00 0.00
42.50 0.00 0.00 0.00
45.00 0.00 0.00 0.00
47.50 0.00 0.00 0.00
50.00 0.00 0.00 0.00
52.50 0.00 0.00 0.00
55.00 0.00 0.00 0.00
57.50 0.00 0.00 0.00
60.00 0.00 0.00 0.00
62.50 0.00 0.00 0.00
65.00 0.00 0.00 0.00
67.50 0.00 0.00 0.00
70.00 0.00 0.00 0.00
72.50 0.00 0.00 0.00
75.00 0.00 0.00 0.00
77.50 0.00 0.00 0.00
80.00 0.00 0.00 0.00
82.50 0.00 0.00 0.00
85.00 0.00 0.00 0.00
87.50 0.00 0.00 0.00
90.00 0.00 0.00 0.00
92.50 0.00 0.00 0.00
95.00 0.00 0.00 0.00
97.50 0.00 0.00 0.00
100.00 0.00 0.00 0.00
102.50 0.00 0.00 0.00
105.00 0.00 0.00 0.00
107.50 0.00 0.00 0.00
110.00 0.00 0.00 0.00
112.50 0.00 0.00 0.00
115.00 0.00 0.00 0.00
117.50 0.00 0.00 0.00
120.00 0.00 0.00 0.00
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 99HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Link 7L: POI-1
Inflow Area = 4.440 ac, 57.82% Impervious, Inflow Depth = 3.93" for 25-yr event
Inflow = 13.15 cfs @ 3.18 hrs, Volume= 1.455 af
Primary = 13.15 cfs @ 3.18 hrs, Volume= 1.455 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Link 7L: POI-1
Inflow
Primary
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Inflow Area=4.440 ac
13.15 cfs
13.15 cfs
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 100HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Link 7L: POI-1
Time
(hours)
Inflow
(cfs)
Elevation
(feet)
Primary
(cfs)
0.00 0.00 0.00 0.00
2.50 0.14 0.00 0.14
5.00 2.00 0.00 2.00
7.50 0.14 0.00 0.14
10.00 0.06 0.00 0.06
12.50 0.05 0.00 0.05
15.00 0.05 0.00 0.05
17.50 0.05 0.00 0.05
20.00 0.05 0.00 0.05
22.50 0.05 0.00 0.05
25.00 0.05 0.00 0.05
27.50 0.04 0.00 0.04
30.00 0.04 0.00 0.04
32.50 0.04 0.00 0.04
35.00 0.04 0.00 0.04
37.50 0.04 0.00 0.04
40.00 0.03 0.00 0.03
42.50 0.03 0.00 0.03
45.00 0.03 0.00 0.03
47.50 0.03 0.00 0.03
50.00 0.03 0.00 0.03
52.50 0.02 0.00 0.02
55.00 0.02 0.00 0.02
57.50 0.02 0.00 0.02
60.00 0.02 0.00 0.02
62.50 0.02 0.00 0.02
65.00 0.01 0.00 0.01
67.50 0.01 0.00 0.01
70.00 0.01 0.00 0.01
72.50 0.01 0.00 0.01
75.00 0.01 0.00 0.01
77.50 0.01 0.00 0.01
80.00 0.01 0.00 0.01
82.50 0.00 0.00 0.00
85.00 0.00 0.00 0.00
87.50 0.00 0.00 0.00
90.00 0.00 0.00 0.00
92.50 0.00 0.00 0.00
95.00 0.00 0.00 0.00
97.50 0.00 0.00 0.00
100.00 0.00 0.00 0.00
102.50 0.00 0.00 0.00
105.00 0.00 0.00 0.00
107.50 0.00 0.00 0.00
110.00 0.00 0.00 0.00
112.50 0.00 0.00 0.00
115.00 0.00 0.00 0.00
117.50 0.00 0.00 0.00
120.00 0.00 0.00 0.00
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 101HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Link 8L: POI-2
Inflow Area = 7.380 ac, 60.57% Impervious, Inflow Depth = 4.16" for 25-yr event
Inflow = 21.43 cfs @ 3.35 hrs, Volume= 2.559 af
Primary = 21.43 cfs @ 3.35 hrs, Volume= 2.559 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Link 8L: POI-2
Inflow
Primary
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Inflow Area=7.380 ac
21.43 cfs
21.43 cfs
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 102HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Link 8L: POI-2
Time
(hours)
Inflow
(cfs)
Elevation
(feet)
Primary
(cfs)
0.00 0.00 0.00 0.00
2.50 0.05 0.00 0.05
5.00 6.14 0.00 6.14
7.50 0.47 0.00 0.47
10.00 0.12 0.00 0.12
12.50 0.11 0.00 0.11
15.00 0.11 0.00 0.11
17.50 0.10 0.00 0.10
20.00 0.10 0.00 0.10
22.50 0.10 0.00 0.10
25.00 0.09 0.00 0.09
27.50 0.09 0.00 0.09
30.00 0.09 0.00 0.09
32.50 0.08 0.00 0.08
35.00 0.08 0.00 0.08
37.50 0.07 0.00 0.07
40.00 0.07 0.00 0.07
42.50 0.07 0.00 0.07
45.00 0.06 0.00 0.06
47.50 0.06 0.00 0.06
50.00 0.05 0.00 0.05
52.50 0.05 0.00 0.05
55.00 0.05 0.00 0.05
57.50 0.04 0.00 0.04
60.00 0.04 0.00 0.04
62.50 0.03 0.00 0.03
65.00 0.03 0.00 0.03
67.50 0.02 0.00 0.02
70.00 0.02 0.00 0.02
72.50 0.02 0.00 0.02
75.00 0.01 0.00 0.01
77.50 0.01 0.00 0.01
80.00 0.01 0.00 0.01
82.50 0.01 0.00 0.01
85.00 0.01 0.00 0.01
87.50 0.01 0.00 0.01
90.00 0.01 0.00 0.01
92.50 0.00 0.00 0.00
95.00 0.00 0.00 0.00
97.50 0.00 0.00 0.00
100.00 0.00 0.00 0.00
102.50 0.00 0.00 0.00
105.00 0.00 0.00 0.00
107.50 0.00 0.00 0.00
110.00 0.00 0.00 0.00
112.50 0.00 0.00 0.00
115.00 0.00 0.00 0.00
117.50 0.00 0.00 0.00
120.00 0.00 0.00 0.00
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 103HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Link 9L: Combined
Inflow Area = 11.820 ac, 59.53% Impervious, Inflow Depth = 4.07" for 25-yr event
Inflow = 31.88 cfs @ 3.34 hrs, Volume= 4.013 af
Primary = 31.88 cfs @ 3.34 hrs, Volume= 4.013 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Link 9L: Combined
Inflow
Primary
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
Inflow Area=11.820 ac
31.88 cfs
31.88 cfs
Charlotte 6-hr 25-yr Rainfall=5.86"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 104HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Link 9L: Combined
Time
(hours)
Inflow
(cfs)
Elevation
(feet)
Primary
(cfs)
0.00 0.00 0.00 0.00
2.50 0.19 0.00 0.19
5.00 8.15 0.00 8.15
7.50 0.61 0.00 0.61
10.00 0.17 0.00 0.17
12.50 0.17 0.00 0.17
15.00 0.16 0.00 0.16
17.50 0.16 0.00 0.16
20.00 0.15 0.00 0.15
22.50 0.15 0.00 0.15
25.00 0.14 0.00 0.14
27.50 0.13 0.00 0.13
30.00 0.13 0.00 0.13
32.50 0.12 0.00 0.12
35.00 0.12 0.00 0.12
37.50 0.11 0.00 0.11
40.00 0.10 0.00 0.10
42.50 0.10 0.00 0.10
45.00 0.09 0.00 0.09
47.50 0.09 0.00 0.09
50.00 0.08 0.00 0.08
52.50 0.07 0.00 0.07
55.00 0.07 0.00 0.07
57.50 0.06 0.00 0.06
60.00 0.06 0.00 0.06
62.50 0.05 0.00 0.05
65.00 0.04 0.00 0.04
67.50 0.04 0.00 0.04
70.00 0.03 0.00 0.03
72.50 0.03 0.00 0.03
75.00 0.02 0.00 0.02
77.50 0.02 0.00 0.02
80.00 0.01 0.00 0.01
82.50 0.01 0.00 0.01
85.00 0.01 0.00 0.01
87.50 0.01 0.00 0.01
90.00 0.01 0.00 0.01
92.50 0.01 0.00 0.01
95.00 0.01 0.00 0.01
97.50 0.01 0.00 0.01
100.00 0.01 0.00 0.01
102.50 0.01 0.00 0.01
105.00 0.00 0.00 0.00
107.50 0.00 0.00 0.00
110.00 0.00 0.00 0.00
112.50 0.00 0.00 0.00
115.00 0.00 0.00 0.00
117.50 0.00 0.00 0.00
120.00 0.00 0.00 0.00
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 105HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Time span=0.00-120.00 hrs, dt=0.05 hrs, 2401 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Runoff Area=6.010 ac 5.66% Impervious Runoff Depth=4.03"Subcatchment 1S: Ex DA-1
Flow Length=699' Tc=12.0 min CN=71 Runoff=34.33 cfs 2.018 af
Runoff Area=6.650 ac 3.08% Impervious Runoff Depth=3.92"Subcatchment 2S: Ex DA-2
Flow Length=790' Tc=13.1 min CN=70 Runoff=35.70 cfs 2.172 af
Runoff Area=3.130 ac 69.33% Impervious Runoff Depth=5.83"Subcatchment 4S: Prop DA-1
Tc=5.0 min CN=87 Runoff=30.44 cfs 1.520 af
Runoff Area=7.380 ac 60.57% Impervious Runoff Depth=5.60"Subcatchment 5S: Prop DA-2
Tc=5.0 min CN=85 Runoff=69.87 cfs 3.442 af
Runoff Area=1.310 ac 30.31% Impervious Runoff Depth=4.14"Subcatchment 6S: Prop DA-3
Tc=5.0 min CN=72 Runoff=9.68 cfs 0.452 af
Runoff Area=2.420 ac 0.00% Impervious Runoff Depth=4.47"Subcatchment 10S: DA-2 Bypass A
Tc=5.0 min CN=75 Runoff=19.15 cfs 0.901 af
Peak Elev=790.53' Storage=29,703 cf Inflow=30.44 cfs 1.520 afPond 4P: Wet Pond 1
Primary=8.81 cfs 1.515 af Secondary=0.00 cfs 0.000 af Outflow=8.81 cfs 1.515 af
Peak Elev=781.09' Storage=63,332 cf Inflow=69.87 cfs 3.442 afPond 5P: Wet Pond 2
Primary=33.73 cfs 3.357 af Secondary=7.64 cfs 0.076 af Outflow=41.37 cfs 3.432 af
Inflow=69.93 cfs 4.190 afLink 3L: Ex Drainage Areas
Primary=69.93 cfs 4.190 af
Inflow=16.97 cfs 1.967 afLink 7L: POI-1
Primary=16.97 cfs 1.967 af
Inflow=41.37 cfs 3.432 afLink 8L: POI-2
Primary=41.37 cfs 3.432 af
Inflow=55.02 cfs 5.399 afLink 9L: Combined
Primary=55.02 cfs 5.399 af
Total Runoff Area = 26.900 ac Runoff Volume = 10.505 af Average Runoff Depth = 4.69"
71.81% Pervious = 19.318 ac 28.19% Impervious = 7.582 ac
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 106HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Subcatchment 1S: Ex DA-1
Runoff = 34.33 cfs @ 12.04 hrs, Volume= 2.018 af, Depth= 4.03"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-yr Rainfall=7.36"
Area (ac) CN Description
5.670 69 50-75% Grass cover, Fair, HSG B
0.340 98 Paved parking, HSG B
6.010 71 Weighted Average
5.670 94.34% Pervious Area
0.340 5.66% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
7.0 75 0.0400 0.18 Sheet Flow, Sheet Flow
Grass: Short n= 0.150 P2= 2.28"
4.6 387 0.0400 1.40 Shallow Concentrated Flow, Shallow Concentrated Flow
Short Grass Pasture Kv= 7.0 fps
0.4 237 0.0100 10.72 64.33 Channel Flow, Roadside Swale
Area= 6.0 sf Perim= 3.0' r= 2.00'
n= 0.022 Earth, clean & straight
12.0 699 Total
Subcatchment 1S: Ex DA-1
Runoff
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
Type II 24-hr
100-yr Rainfall=7.36"
Runoff Area=6.010 ac
Runoff Volume=2.018 af
Runoff Depth=4.03"
Flow Length=699'
Tc=12.0 min
CN=71
34.33 cfs
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 107HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 1S: Ex DA-1
Time
(hours)
Precip.
(inches)
Excess
(inches)
Runoff
(cfs)
0.00 0.00 0.00 0.00
2.50 0.21 0.00 0.00
5.00 0.46 0.00 0.00
7.50 0.80 0.00 0.00
10.00 1.33 0.06 0.32
12.50 5.41 2.43 4.61
15.00 6.28 3.13 1.14
17.50 6.71 3.48 0.73
20.00 7.01 3.73 0.51
22.50 7.23 3.92 0.45
25.00 7.36 4.03 0.00
27.50 7.36 4.03 0.00
30.00 7.36 4.03 0.00
32.50 7.36 4.03 0.00
35.00 7.36 4.03 0.00
37.50 7.36 4.03 0.00
40.00 7.36 4.03 0.00
42.50 7.36 4.03 0.00
45.00 7.36 4.03 0.00
47.50 7.36 4.03 0.00
50.00 7.36 4.03 0.00
52.50 7.36 4.03 0.00
55.00 7.36 4.03 0.00
57.50 7.36 4.03 0.00
60.00 7.36 4.03 0.00
62.50 7.36 4.03 0.00
65.00 7.36 4.03 0.00
67.50 7.36 4.03 0.00
70.00 7.36 4.03 0.00
72.50 7.36 4.03 0.00
75.00 7.36 4.03 0.00
77.50 7.36 4.03 0.00
80.00 7.36 4.03 0.00
82.50 7.36 4.03 0.00
85.00 7.36 4.03 0.00
87.50 7.36 4.03 0.00
90.00 7.36 4.03 0.00
92.50 7.36 4.03 0.00
95.00 7.36 4.03 0.00
97.50 7.36 4.03 0.00
100.00 7.36 4.03 0.00
102.50 7.36 4.03 0.00
105.00 7.36 4.03 0.00
107.50 7.36 4.03 0.00
110.00 7.36 4.03 0.00
112.50 7.36 4.03 0.00
115.00 7.36 4.03 0.00
117.50 7.36 4.03 0.00
120.00 7.36 4.03 0.00
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 108HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Subcatchment 2S: Ex DA-2
Runoff = 35.70 cfs @ 12.05 hrs, Volume= 2.172 af, Depth= 3.92"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-yr Rainfall=7.36"
Area (ac) CN Description
6.445 69 50-75% Grass cover, Fair, HSG B
0.205 98 Paved parking, HSG B
6.650 70 Weighted Average
6.445 96.92% Pervious Area
0.205 3.08% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
7.8 75 0.0300 0.16 Sheet Flow, Sheet Flow
Grass: Short n= 0.150 P2= 2.28"
4.8 400 0.0400 1.40 Shallow Concentrated Flow, Shallow Concentrated Flow
Short Grass Pasture Kv= 7.0 fps
0.5 315 0.0150 11.56 69.34 Channel Flow, Channel Flow
Area= 6.0 sf Perim= 3.0' r= 2.00'
n= 0.025 Earth, clean & winding
13.1 790 Total
Subcatchment 2S: Ex DA-2
Runoff
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
Type II 24-hr
100-yr Rainfall=7.36"
Runoff Area=6.650 ac
Runoff Volume=2.172 af
Runoff Depth=3.92"
Flow Length=790'
Tc=13.1 min
CN=70
35.70 cfs
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
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Hydrograph for Subcatchment 2S: Ex DA-2
Time
(hours)
Precip.
(inches)
Excess
(inches)
Runoff
(cfs)
0.00 0.00 0.00 0.00
2.50 0.21 0.00 0.00
5.00 0.46 0.00 0.00
7.50 0.80 0.00 0.00
10.00 1.33 0.05 0.31
12.50 5.41 2.34 5.30
15.00 6.28 3.03 1.25
17.50 6.71 3.38 0.80
20.00 7.01 3.62 0.55
22.50 7.23 3.81 0.49
25.00 7.36 3.92 0.00
27.50 7.36 3.92 0.00
30.00 7.36 3.92 0.00
32.50 7.36 3.92 0.00
35.00 7.36 3.92 0.00
37.50 7.36 3.92 0.00
40.00 7.36 3.92 0.00
42.50 7.36 3.92 0.00
45.00 7.36 3.92 0.00
47.50 7.36 3.92 0.00
50.00 7.36 3.92 0.00
52.50 7.36 3.92 0.00
55.00 7.36 3.92 0.00
57.50 7.36 3.92 0.00
60.00 7.36 3.92 0.00
62.50 7.36 3.92 0.00
65.00 7.36 3.92 0.00
67.50 7.36 3.92 0.00
70.00 7.36 3.92 0.00
72.50 7.36 3.92 0.00
75.00 7.36 3.92 0.00
77.50 7.36 3.92 0.00
80.00 7.36 3.92 0.00
82.50 7.36 3.92 0.00
85.00 7.36 3.92 0.00
87.50 7.36 3.92 0.00
90.00 7.36 3.92 0.00
92.50 7.36 3.92 0.00
95.00 7.36 3.92 0.00
97.50 7.36 3.92 0.00
100.00 7.36 3.92 0.00
102.50 7.36 3.92 0.00
105.00 7.36 3.92 0.00
107.50 7.36 3.92 0.00
110.00 7.36 3.92 0.00
112.50 7.36 3.92 0.00
115.00 7.36 3.92 0.00
117.50 7.36 3.92 0.00
120.00 7.36 3.92 0.00
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 110HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Subcatchment 4S: Prop DA-1
[49] Hint: Tc<2dt may require smaller dt
Runoff = 30.44 cfs @ 11.95 hrs, Volume= 1.520 af, Depth= 5.83"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-yr Rainfall=7.36"
Area (ac) CN Description
2.170 98 Paved parking, HSG B
0.960 61 >75% Grass cover, Good, HSG B
3.130 87 Weighted Average
0.960 30.67% Pervious Area
2.170 69.33% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, ToC
Subcatchment 4S: Prop DA-1
Runoff
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
Type II 24-hr
100-yr Rainfall=7.36"
Runoff Area=3.130 ac
Runoff Volume=1.520 af
Runoff Depth=5.83"
Tc=5.0 min
CN=87
30.44 cfs
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
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Hydrograph for Subcatchment 4S: Prop DA-1
Time
(hours)
Precip.
(inches)
Excess
(inches)
Runoff
(cfs)
0.00 0.00 0.00 0.00
2.50 0.21 0.00 0.00
5.00 0.46 0.02 0.07
7.50 0.80 0.13 0.21
10.00 1.33 0.42 0.58
12.50 5.41 3.95 2.30
15.00 6.28 4.79 0.68
17.50 6.71 5.20 0.44
20.00 7.01 5.49 0.30
22.50 7.23 5.71 0.27
25.00 7.36 5.83 0.00
27.50 7.36 5.83 0.00
30.00 7.36 5.83 0.00
32.50 7.36 5.83 0.00
35.00 7.36 5.83 0.00
37.50 7.36 5.83 0.00
40.00 7.36 5.83 0.00
42.50 7.36 5.83 0.00
45.00 7.36 5.83 0.00
47.50 7.36 5.83 0.00
50.00 7.36 5.83 0.00
52.50 7.36 5.83 0.00
55.00 7.36 5.83 0.00
57.50 7.36 5.83 0.00
60.00 7.36 5.83 0.00
62.50 7.36 5.83 0.00
65.00 7.36 5.83 0.00
67.50 7.36 5.83 0.00
70.00 7.36 5.83 0.00
72.50 7.36 5.83 0.00
75.00 7.36 5.83 0.00
77.50 7.36 5.83 0.00
80.00 7.36 5.83 0.00
82.50 7.36 5.83 0.00
85.00 7.36 5.83 0.00
87.50 7.36 5.83 0.00
90.00 7.36 5.83 0.00
92.50 7.36 5.83 0.00
95.00 7.36 5.83 0.00
97.50 7.36 5.83 0.00
100.00 7.36 5.83 0.00
102.50 7.36 5.83 0.00
105.00 7.36 5.83 0.00
107.50 7.36 5.83 0.00
110.00 7.36 5.83 0.00
112.50 7.36 5.83 0.00
115.00 7.36 5.83 0.00
117.50 7.36 5.83 0.00
120.00 7.36 5.83 0.00
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 112HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Subcatchment 5S: Prop DA-2
[49] Hint: Tc<2dt may require smaller dt
Runoff = 69.87 cfs @ 11.95 hrs, Volume= 3.442 af, Depth= 5.60"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-yr Rainfall=7.36"
Area (ac) CN Description
2.560 61 >75% Grass cover, Good, HSG B
1.600 98 Roofs, HSG B
2.870 98 Paved parking, HSG B
0.350 98 Water Surface, 0% imp, HSG B
7.380 85 Weighted Average
2.910 39.43% Pervious Area
4.470 60.57% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, Direct Entry
Subcatchment 5S: Prop DA-2
Runoff
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)75
70
65
60
55
50
45
40
35
30
25
20
15
10
5
0
Type II 24-hr
100-yr Rainfall=7.36"
Runoff Area=7.380 ac
Runoff Volume=3.442 af
Runoff Depth=5.60"
Tc=5.0 min
CN=85
69.87 cfs
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 113HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 5S: Prop DA-2
Time
(hours)
Precip.
(inches)
Excess
(inches)
Runoff
(cfs)
0.00 0.00 0.00 0.00
2.50 0.21 0.00 0.00
5.00 0.46 0.01 0.09
7.50 0.80 0.09 0.41
10.00 1.33 0.35 1.23
12.50 5.41 3.75 5.34
15.00 6.28 4.57 1.58
17.50 6.71 4.98 1.01
20.00 7.01 5.26 0.69
22.50 7.23 5.48 0.62
25.00 7.36 5.60 0.00
27.50 7.36 5.60 0.00
30.00 7.36 5.60 0.00
32.50 7.36 5.60 0.00
35.00 7.36 5.60 0.00
37.50 7.36 5.60 0.00
40.00 7.36 5.60 0.00
42.50 7.36 5.60 0.00
45.00 7.36 5.60 0.00
47.50 7.36 5.60 0.00
50.00 7.36 5.60 0.00
52.50 7.36 5.60 0.00
55.00 7.36 5.60 0.00
57.50 7.36 5.60 0.00
60.00 7.36 5.60 0.00
62.50 7.36 5.60 0.00
65.00 7.36 5.60 0.00
67.50 7.36 5.60 0.00
70.00 7.36 5.60 0.00
72.50 7.36 5.60 0.00
75.00 7.36 5.60 0.00
77.50 7.36 5.60 0.00
80.00 7.36 5.60 0.00
82.50 7.36 5.60 0.00
85.00 7.36 5.60 0.00
87.50 7.36 5.60 0.00
90.00 7.36 5.60 0.00
92.50 7.36 5.60 0.00
95.00 7.36 5.60 0.00
97.50 7.36 5.60 0.00
100.00 7.36 5.60 0.00
102.50 7.36 5.60 0.00
105.00 7.36 5.60 0.00
107.50 7.36 5.60 0.00
110.00 7.36 5.60 0.00
112.50 7.36 5.60 0.00
115.00 7.36 5.60 0.00
117.50 7.36 5.60 0.00
120.00 7.36 5.60 0.00
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 114HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Subcatchment 6S: Prop DA-3
[49] Hint: Tc<2dt may require smaller dt
Runoff = 9.68 cfs @ 11.96 hrs, Volume= 0.452 af, Depth= 4.14"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-yr Rainfall=7.36"
Area (ac) CN Description
0.397 98 Paved parking, HSG B
0.913 61 >75% Grass cover, Good, HSG B
1.310 72 Weighted Average
0.913 69.69% Pervious Area
0.397 30.31% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, Time of Concentration
Subcatchment 6S: Prop DA-3
Runoff
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)10
9
8
7
6
5
4
3
2
1
0
Type II 24-hr
100-yr Rainfall=7.36"
Runoff Area=1.310 ac
Runoff Volume=0.452 af
Runoff Depth=4.14"
Tc=5.0 min
CN=72
9.68 cfs
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 115HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 6S: Prop DA-3
Time
(hours)
Precip.
(inches)
Excess
(inches)
Runoff
(cfs)
0.00 0.00 0.00 0.00
2.50 0.21 0.00 0.00
5.00 0.46 0.00 0.00
7.50 0.80 0.00 0.00
10.00 1.33 0.07 0.09
12.50 5.41 2.52 0.80
15.00 6.28 3.23 0.25
17.50 6.71 3.58 0.16
20.00 7.01 3.83 0.11
22.50 7.23 4.03 0.10
25.00 7.36 4.14 0.00
27.50 7.36 4.14 0.00
30.00 7.36 4.14 0.00
32.50 7.36 4.14 0.00
35.00 7.36 4.14 0.00
37.50 7.36 4.14 0.00
40.00 7.36 4.14 0.00
42.50 7.36 4.14 0.00
45.00 7.36 4.14 0.00
47.50 7.36 4.14 0.00
50.00 7.36 4.14 0.00
52.50 7.36 4.14 0.00
55.00 7.36 4.14 0.00
57.50 7.36 4.14 0.00
60.00 7.36 4.14 0.00
62.50 7.36 4.14 0.00
65.00 7.36 4.14 0.00
67.50 7.36 4.14 0.00
70.00 7.36 4.14 0.00
72.50 7.36 4.14 0.00
75.00 7.36 4.14 0.00
77.50 7.36 4.14 0.00
80.00 7.36 4.14 0.00
82.50 7.36 4.14 0.00
85.00 7.36 4.14 0.00
87.50 7.36 4.14 0.00
90.00 7.36 4.14 0.00
92.50 7.36 4.14 0.00
95.00 7.36 4.14 0.00
97.50 7.36 4.14 0.00
100.00 7.36 4.14 0.00
102.50 7.36 4.14 0.00
105.00 7.36 4.14 0.00
107.50 7.36 4.14 0.00
110.00 7.36 4.14 0.00
112.50 7.36 4.14 0.00
115.00 7.36 4.14 0.00
117.50 7.36 4.14 0.00
120.00 7.36 4.14 0.00
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 116HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Subcatchment 10S: DA-2 Bypass A
[49] Hint: Tc<2dt may require smaller dt
Runoff = 19.15 cfs @ 11.96 hrs, Volume= 0.901 af, Depth= 4.47"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-yr Rainfall=7.36"
Area (ac) CN Description
* 2.420 75
2.420 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 10S: DA-2 Bypass A
Runoff
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Type II 24-hr
100-yr Rainfall=7.36"
Runoff Area=2.420 ac
Runoff Volume=0.901 af
Runoff Depth=4.47"
Tc=5.0 min
CN=75
19.15 cfs
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
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Hydrograph for Subcatchment 10S: DA-2 Bypass A
Time
(hours)
Precip.
(inches)
Excess
(inches)
Runoff
(cfs)
0.00 0.00 0.00 0.00
2.50 0.21 0.00 0.00
5.00 0.46 0.00 0.00
7.50 0.80 0.01 0.03
10.00 1.33 0.11 0.21
12.50 5.41 2.79 1.55
15.00 6.28 3.52 0.47
17.50 6.71 3.89 0.30
20.00 7.01 4.16 0.21
22.50 7.23 4.36 0.19
25.00 7.36 4.47 0.00
27.50 7.36 4.47 0.00
30.00 7.36 4.47 0.00
32.50 7.36 4.47 0.00
35.00 7.36 4.47 0.00
37.50 7.36 4.47 0.00
40.00 7.36 4.47 0.00
42.50 7.36 4.47 0.00
45.00 7.36 4.47 0.00
47.50 7.36 4.47 0.00
50.00 7.36 4.47 0.00
52.50 7.36 4.47 0.00
55.00 7.36 4.47 0.00
57.50 7.36 4.47 0.00
60.00 7.36 4.47 0.00
62.50 7.36 4.47 0.00
65.00 7.36 4.47 0.00
67.50 7.36 4.47 0.00
70.00 7.36 4.47 0.00
72.50 7.36 4.47 0.00
75.00 7.36 4.47 0.00
77.50 7.36 4.47 0.00
80.00 7.36 4.47 0.00
82.50 7.36 4.47 0.00
85.00 7.36 4.47 0.00
87.50 7.36 4.47 0.00
90.00 7.36 4.47 0.00
92.50 7.36 4.47 0.00
95.00 7.36 4.47 0.00
97.50 7.36 4.47 0.00
100.00 7.36 4.47 0.00
102.50 7.36 4.47 0.00
105.00 7.36 4.47 0.00
107.50 7.36 4.47 0.00
110.00 7.36 4.47 0.00
112.50 7.36 4.47 0.00
115.00 7.36 4.47 0.00
117.50 7.36 4.47 0.00
120.00 7.36 4.47 0.00
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 118HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Pond 4P: Wet Pond 1
Inflow Area = 3.130 ac, 69.33% Impervious, Inflow Depth = 5.83" for 100-yr event
Inflow = 30.44 cfs @ 11.95 hrs, Volume= 1.520 af
Outflow = 8.81 cfs @ 12.10 hrs, Volume= 1.515 af, Atten= 71%, Lag= 8.7 min
Primary = 8.81 cfs @ 12.10 hrs, Volume= 1.515 af
Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Peak Elev= 790.53' @ 12.09 hrs Surf.Area= 11,886 sf Storage= 29,703 cf
Plug-Flow detention time= 357.0 min calculated for 1.515 af (100% of inflow)
Center-of-Mass det. time= 354.9 min ( 1,138.4 - 783.5 )
Volume Invert Avail.Storage Storage Description
#1 787.50' 48,545 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic-feet) (cubic-feet)
787.50 7,516 0 0
789.00 9,858 13,031 13,031
790.00 11,185 10,522 23,552
791.00 12,500 11,843 35,395
792.00 13,800 13,150 48,545
Device Routing Invert Outlet Devices
#1 Primary 787.50'24.0" Round Culvert
L= 23.7' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 787.50' / 787.38' S= 0.0051 '/' Cc= 0.900
n= 0.013, Flow Area= 3.14 sf
#2 Device 1 787.50'1.5" Vert. Orifice/Grate C= 0.600
#3 Device 1 788.50'24.0" W x 8.0" H Vert. Orifice/Grate C= 0.600
#4 Device 1 790.50'16.0' long Sharp-Crested Vee/Trap Weir Cv= 2.62 (C= 3.28)
#5 Secondary 791.00'20.0' long x 10.0' breadth Broad-Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64
Primary OutFlow Max=8.73 cfs @ 12.10 hrs HW=790.53' (Free Discharge)
1=Culvert (Passes 8.73 cfs of 20.18 cfs potential flow)
2=Orifice/Grate (Orifice Controls 0.10 cfs @ 8.30 fps)
3=Orifice/Grate (Orifice Controls 8.35 cfs @ 6.26 fps)
4=Sharp-Crested Vee/Trap Weir (Weir Controls 0.28 cfs @ 0.57 fps)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=787.50' (Free Discharge)
5=Broad-Crested Rectangular Weir ( Controls 0.00 cfs)
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 119HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Pond 4P: Wet Pond 1
Inflow
Outflow
Primary
Secondary
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
Inflow Area=3.130 ac
Peak Elev=790.53'
Storage=29,703 cf
30.44 cfs
8.81 cfs
8.81 cfs
0.00 cfs
Pond 4P: Wet Pond 1
Total
Primary
Secondary
Stage-Discharge
Discharge (cfs)
80706050403020100Elevation (feet)792
791
790
789
788
Culvert + Orifice/Grate
Orifice/Grate
Sharp-Crested Vee/Trap Weir
Broad-Crested Rectangular Weir
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 120HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Pond 4P: Wet Pond 1
Surface
Storage
Stage-Area-Storage
Storage (cubic-feet)
45,00040,00035,00030,00025,00020,00015,00010,0005,0000
Surface/Horizontal/Wetted Area (sq-ft)
13,00012,00011,00010,0009,0008,0007,0006,0005,0004,0003,0002,0001,0000
Elevation (feet)792
791
790
789
788
Custom Stage Data
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 121HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Pond 4P: Wet Pond 1
Time
(hours)
Inflow
(cfs)
Storage
(cubic-feet)
Elevation
(feet)
Outflow
(cfs)
Primary
(cfs)
Secondary
(cfs)
0.00 0.00 0 787.50 0.00 0.00 0.00
2.50 0.00 0 787.50 0.00 0.00 0.00
5.00 0.07 165 787.52 0.00 0.00 0.00
7.50 0.21 1,310 787.67 0.02 0.02 0.00
10.00 0.58 4,287 788.04 0.04 0.04 0.00
12.50 2.30 23,502 790.00 6.99 6.99 0.00
15.00 0.68 10,528 788.74 0.83 0.83 0.00
17.50 0.44 9,779 788.66 0.48 0.48 0.00
20.00 0.30 9,419 788.62 0.34 0.34 0.00
22.50 0.27 9,240 788.60 0.28 0.28 0.00
25.00 0.00 8,633 788.54 0.10 0.10 0.00
27.50 0.00 8,031 788.47 0.06 0.06 0.00
30.00 0.00 7,533 788.42 0.05 0.05 0.00
32.50 0.00 7,049 788.36 0.05 0.05 0.00
35.00 0.00 6,582 788.31 0.05 0.05 0.00
37.50 0.00 6,131 788.26 0.05 0.05 0.00
40.00 0.00 5,696 788.21 0.05 0.05 0.00
42.50 0.00 5,278 788.16 0.05 0.05 0.00
45.00 0.00 4,876 788.11 0.04 0.04 0.00
47.50 0.00 4,491 788.06 0.04 0.04 0.00
50.00 0.00 4,123 788.02 0.04 0.04 0.00
52.50 0.00 3,772 787.98 0.04 0.04 0.00
55.00 0.00 3,438 787.94 0.04 0.04 0.00
57.50 0.00 3,121 787.90 0.03 0.03 0.00
60.00 0.00 2,821 787.86 0.03 0.03 0.00
62.50 0.00 2,539 787.83 0.03 0.03 0.00
65.00 0.00 2,275 787.79 0.03 0.03 0.00
67.50 0.00 2,028 787.76 0.03 0.03 0.00
70.00 0.00 1,800 787.73 0.02 0.02 0.00
72.50 0.00 1,589 787.71 0.02 0.02 0.00
75.00 0.00 1,396 787.68 0.02 0.02 0.00
77.50 0.00 1,222 787.66 0.02 0.02 0.00
80.00 0.00 1,066 787.64 0.02 0.02 0.00
82.50 0.00 928 787.62 0.01 0.01 0.00
85.00 0.00 811 787.61 0.01 0.01 0.00
87.50 0.00 712 787.59 0.01 0.01 0.00
90.00 0.00 627 787.58 0.01 0.01 0.00
92.50 0.00 557 787.57 0.01 0.01 0.00
95.00 0.00 498 787.57 0.01 0.01 0.00
97.50 0.00 448 787.56 0.01 0.01 0.00
100.00 0.00 407 787.55 0.00 0.00 0.00
102.50 0.00 372 787.55 0.00 0.00 0.00
105.00 0.00 343 787.55 0.00 0.00 0.00
107.50 0.00 318 787.54 0.00 0.00 0.00
110.00 0.00 295 787.54 0.00 0.00 0.00
112.50 0.00 273 787.54 0.00 0.00 0.00
115.00 0.00 253 787.53 0.00 0.00 0.00
117.50 0.00 235 787.53 0.00 0.00 0.00
120.00 0.00 217 787.53 0.00 0.00 0.00
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 122HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 4P: Wet Pond 1
Elevation
(feet)
Discharge
(cfs)
Primary
(cfs)
Secondary
(cfs)
787.50 0.00 0.00 0.00
787.55 0.00 0.00 0.00
787.60 0.01 0.01 0.00
787.65 0.02 0.02 0.00
787.70 0.02 0.02 0.00
787.75 0.03 0.03 0.00
787.80 0.03 0.03 0.00
787.85 0.03 0.03 0.00
787.90 0.03 0.03 0.00
787.95 0.04 0.04 0.00
788.00 0.04 0.04 0.00
788.05 0.04 0.04 0.00
788.10 0.04 0.04 0.00
788.15 0.05 0.05 0.00
788.20 0.05 0.05 0.00
788.25 0.05 0.05 0.00
788.30 0.05 0.05 0.00
788.35 0.05 0.05 0.00
788.40 0.05 0.05 0.00
788.45 0.06 0.06 0.00
788.50 0.06 0.06 0.00
788.55 0.13 0.13 0.00
788.60 0.26 0.26 0.00
788.65 0.43 0.43 0.00
788.70 0.64 0.64 0.00
788.75 0.87 0.87 0.00
788.80 1.12 1.12 0.00
788.85 1.40 1.40 0.00
788.90 1.69 1.69 0.00
788.95 2.01 2.01 0.00
789.00 2.34 2.34 0.00
789.05 2.69 2.69 0.00
789.10 3.06 3.06 0.00
789.15 3.44 3.44 0.00
789.20 3.80 3.80 0.00
789.25 4.09 4.09 0.00
789.30 4.36 4.36 0.00
789.35 4.61 4.61 0.00
789.40 4.84 4.84 0.00
789.45 5.06 5.06 0.00
789.50 5.27 5.27 0.00
789.55 5.47 5.47 0.00
789.60 5.66 5.66 0.00
789.65 5.85 5.85 0.00
789.70 6.03 6.03 0.00
789.75 6.20 6.20 0.00
789.80 6.37 6.37 0.00
789.85 6.53 6.53 0.00
789.90 6.69 6.69 0.00
789.95 6.85 6.85 0.00
790.00 7.00 7.00 0.00
790.05 7.15 7.15 0.00
Elevation
(feet)
Discharge
(cfs)
Primary
(cfs)
Secondary
(cfs)
790.10 7.30 7.30 0.00
790.15 7.44 7.44 0.00
790.20 7.58 7.58 0.00
790.25 7.72 7.72 0.00
790.30 7.86 7.86 0.00
790.35 7.99 7.99 0.00
790.40 8.12 8.12 0.00
790.45 8.25 8.25 0.00
790.50 8.38 8.38 0.00
790.55 9.09 9.09 0.00
790.60 10.28 10.28 0.00
790.65 11.79 11.79 0.00
790.70 13.55 13.55 0.00
790.75 15.53 15.53 0.00
790.80 17.71 17.71 0.00
790.85 20.06 20.06 0.00
790.90 22.58 22.58 0.00
790.95 23.58 23.58 0.00
791.00 23.92 23.92 0.00
791.05 24.71 24.16 0.56
791.10 25.97 24.39 1.57
791.15 27.52 24.62 2.89
791.20 29.31 24.86 4.45
791.25 31.35 25.08 6.27
791.30 33.61 25.31 8.30
791.35 36.07 25.54 10.53
791.40 38.71 25.76 12.95
791.45 41.65 25.98 15.67
791.50 44.80 26.20 18.60
791.55 48.16 26.42 21.74
791.60 51.73 26.63 25.10
791.65 55.12 26.85 28.27
791.70 58.63 27.06 31.57
791.75 62.25 27.27 34.98
791.80 65.98 27.48 38.50
791.85 69.81 27.69 42.12
791.90 73.74 27.89 45.85
791.95 77.77 28.10 49.68
792.00 81.90 28.30 53.60
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 123HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 4P: Wet Pond 1
Elevation
(feet)
Surface
(sq-ft)
Storage
(cubic-feet)
787.50 7,516 0
787.55 7,594 378
787.60 7,672 759
787.65 7,750 1,145
787.70 7,828 1,534
787.75 7,906 1,928
787.80 7,984 2,325
787.85 8,062 2,726
787.90 8,141 3,131
787.95 8,219 3,540
788.00 8,297 3,953
788.05 8,375 4,370
788.10 8,453 4,791
788.15 8,531 5,215
788.20 8,609 5,644
788.25 8,687 6,076
788.30 8,765 6,512
788.35 8,843 6,953
788.40 8,921 7,397
788.45 8,999 7,845
788.50 9,077 8,297
788.55 9,155 8,752
788.60 9,233 9,212
788.65 9,312 9,676
788.70 9,390 10,143
788.75 9,468 10,615
788.80 9,546 11,090
788.85 9,624 11,569
788.90 9,702 12,053
788.95 9,780 12,540
789.00 9,858 13,031
789.05 9,924 13,525
789.10 9,991 14,023
789.15 10,057 14,524
789.20 10,123 15,029
789.25 10,190 15,536
789.30 10,256 16,048
789.35 10,322 16,562
789.40 10,389 17,080
789.45 10,455 17,601
789.50 10,522 18,125
789.55 10,588 18,653
789.60 10,654 19,184
789.65 10,721 19,719
789.70 10,787 20,256
789.75 10,853 20,797
789.80 10,920 21,342
789.85 10,986 21,889
789.90 11,052 22,440
789.95 11,119 22,994
790.00 11,185 23,552
790.05 11,251 24,113
Elevation
(feet)
Surface
(sq-ft)
Storage
(cubic-feet)
790.10 11,317 24,677
790.15 11,382 25,245
790.20 11,448 25,815
790.25 11,514 26,389
790.30 11,579 26,967
790.35 11,645 27,547
790.40 11,711 28,131
790.45 11,777 28,718
790.50 11,843 29,309
790.55 11,908 29,903
790.60 11,974 30,500
790.65 12,040 31,100
790.70 12,106 31,704
790.75 12,171 32,311
790.80 12,237 32,921
790.85 12,303 33,534
790.90 12,368 34,151
790.95 12,434 34,771
791.00 12,500 35,395
791.05 12,565 36,021
791.10 12,630 36,651
791.15 12,695 37,284
791.20 12,760 37,921
791.25 12,825 38,560
791.30 12,890 39,203
791.35 12,955 39,849
791.40 13,020 40,498
791.45 13,085 41,151
791.50 13,150 41,807
791.55 13,215 42,466
791.60 13,280 43,129
791.65 13,345 43,794
791.70 13,410 44,463
791.75 13,475 45,135
791.80 13,540 45,810
791.85 13,605 46,489
791.90 13,670 47,171
791.95 13,735 47,856
792.00 13,800 48,545
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 124HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Pond 5P: Wet Pond 2
Inflow Area = 7.380 ac, 60.57% Impervious, Inflow Depth = 5.60" for 100-yr event
Inflow = 69.87 cfs @ 11.95 hrs, Volume= 3.442 af
Outflow = 41.37 cfs @ 12.04 hrs, Volume= 3.432 af, Atten= 41%, Lag= 5.5 min
Primary = 33.73 cfs @ 12.04 hrs, Volume= 3.357 af
Secondary = 7.64 cfs @ 12.04 hrs, Volume= 0.076 af
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Peak Elev= 781.09' @ 12.04 hrs Surf.Area= 19,860 sf Storage= 63,332 cf
Plug-Flow detention time= 322.3 min calculated for 3.431 af (100% of inflow)
Center-of-Mass det. time= 322.6 min ( 1,111.8 - 789.2 )
Volume Invert Avail.Storage Storage Description
#1 777.00' 82,420 cf Custom Stage Data (Irregular) Listed below (Recalc)
Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area
(feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft)
777.00 11,324 654.0 0 0 11,324
778.00 13,317 673.0 12,307 12,307 13,437
779.00 15,366 692.0 14,329 26,636 15,611
780.00 17,509 713.0 16,426 43,062 18,062
781.00 19,675 731.0 18,581 61,644 20,253
782.00 21,898 750.0 20,777 82,420 22,611
Device Routing Invert Outlet Devices
#1 Primary 776.50'24.0" Round Culvert L= 77.6' Ke= 0.500
Inlet / Outlet Invert= 776.50' / 775.72' S= 0.0101 '/' Cc= 0.900
n= 0.013, Flow Area= 3.14 sf
#2 Device 1 777.00'2.0" Vert. Orifice/Grate C= 0.600
#3 Device 1 778.30'24.0" W x 8.0" H Vert. Orifice/Grate C= 0.600
#4 Primary 780.50'16.0' long Sharp-Crested Vee/Trap Weir Cv= 2.62 (C= 3.28)
#5 Secondary 780.75'12.0' long Sharp-Crested Vee/Trap Weir Cv= 2.62 (C= 3.28)
Primary OutFlow Max=33.09 cfs @ 12.04 hrs HW=781.08' (Free Discharge)
1=Culvert (Passes 10.23 cfs of 28.60 cfs potential flow)
2=Orifice/Grate (Orifice Controls 0.21 cfs @ 9.62 fps)
3=Orifice/Grate (Orifice Controls 10.02 cfs @ 7.52 fps)
4=Sharp-Crested Vee/Trap Weir (Weir Controls 22.86 cfs @ 2.48 fps)
Secondary OutFlow Max=7.30 cfs @ 12.04 hrs HW=781.08' (Free Discharge)
5=Sharp-Crested Vee/Trap Weir (Weir Controls 7.30 cfs @ 1.87 fps)
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 125HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Pond 5P: Wet Pond 2
Inflow
Outflow
Primary
Secondary
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)75
70
65
60
55
50
45
40
35
30
25
20
15
10
5
0
Inflow Area=7.380 ac
Peak Elev=781.09'
Storage=63,332 cf
69.87 cfs
41.37 cfs
33.73 cfs
7.64 cfs
Pond 5P: Wet Pond 2
Total
Primary
Secondary
Stage-Discharge
Discharge (cfs)
160140120100806040200Elevation (feet)782
781
780
779
778
777
Orifice/Grate
Orifice/Grate
Sharp-Crested Vee/Trap Weir Sharp-Crested Vee/Trap Weir
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 126HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Pond 5P: Wet Pond 2
Surface
Storage
Stage-Area-Storage
Storage (cubic-feet)
80,00070,00060,00050,00040,00030,00020,00010,0000
Surface/Horizontal/Wetted Area (sq-ft)
20,00018,00016,00014,00012,00010,0008,0006,0004,0002,0000
Elevation (feet)782
781
780
779
778
777
Custom Stage Data
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 127HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Pond 5P: Wet Pond 2
Time
(hours)
Inflow
(cfs)
Storage
(cubic-feet)
Elevation
(feet)
Outflow
(cfs)
Primary
(cfs)
Secondary
(cfs)
0.00 0.00 0 777.00 0.00 0.00 0.00
2.50 0.00 0 777.00 0.00 0.00 0.00
5.00 0.09 148 777.01 0.00 0.00 0.00
7.50 0.41 2,228 777.19 0.03 0.03 0.00
10.00 1.23 8,377 777.70 0.08 0.08 0.00
12.50 5.34 52,089 780.50 8.96 8.96 0.00
15.00 1.58 23,651 778.80 2.43 2.43 0.00
17.50 1.01 20,553 778.59 1.15 1.15 0.00
20.00 0.69 19,535 778.52 0.80 0.80 0.00
22.50 0.62 19,041 778.49 0.65 0.65 0.00
25.00 0.00 17,534 778.38 0.27 0.27 0.00
27.50 0.00 16,114 778.28 0.11 0.11 0.00
30.00 0.00 15,096 778.21 0.11 0.11 0.00
32.50 0.00 14,111 778.13 0.11 0.11 0.00
35.00 0.00 13,158 778.06 0.10 0.10 0.00
37.50 0.00 12,239 777.99 0.10 0.10 0.00
40.00 0.00 11,353 777.93 0.10 0.10 0.00
42.50 0.00 10,501 777.86 0.09 0.09 0.00
45.00 0.00 9,684 777.80 0.09 0.09 0.00
47.50 0.00 8,901 777.74 0.09 0.09 0.00
50.00 0.00 8,153 777.68 0.08 0.08 0.00
52.50 0.00 7,441 777.62 0.08 0.08 0.00
55.00 0.00 6,764 777.57 0.07 0.07 0.00
57.50 0.00 6,123 777.52 0.07 0.07 0.00
60.00 0.00 5,518 777.47 0.07 0.07 0.00
62.50 0.00 4,950 777.42 0.06 0.06 0.00
65.00 0.00 4,418 777.38 0.06 0.06 0.00
67.50 0.00 3,924 777.34 0.05 0.05 0.00
70.00 0.00 3,467 777.30 0.05 0.05 0.00
72.50 0.00 3,048 777.26 0.04 0.04 0.00
75.00 0.00 2,667 777.23 0.04 0.04 0.00
77.50 0.00 2,323 777.20 0.04 0.04 0.00
80.00 0.00 2,019 777.18 0.03 0.03 0.00
82.50 0.00 1,752 777.15 0.03 0.03 0.00
85.00 0.00 1,523 777.13 0.02 0.02 0.00
87.50 0.00 1,335 777.12 0.02 0.02 0.00
90.00 0.00 1,181 777.10 0.02 0.02 0.00
92.50 0.00 1,053 777.09 0.01 0.01 0.00
95.00 0.00 944 777.08 0.01 0.01 0.00
97.50 0.00 852 777.07 0.01 0.01 0.00
100.00 0.00 774 777.07 0.01 0.01 0.00
102.50 0.00 708 777.06 0.01 0.01 0.00
105.00 0.00 652 777.06 0.01 0.01 0.00
107.50 0.00 605 777.05 0.00 0.00 0.00
110.00 0.00 564 777.05 0.00 0.00 0.00
112.50 0.00 528 777.05 0.00 0.00 0.00
115.00 0.00 494 777.04 0.00 0.00 0.00
117.50 0.00 463 777.04 0.00 0.00 0.00
120.00 0.00 433 777.04 0.00 0.00 0.00
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 128HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 5P: Wet Pond 2
Elevation
(feet)
Discharge
(cfs)
Primary
(cfs)
Secondary
(cfs)
777.00 0.00 0.00 0.00
777.05 0.00 0.00 0.00
777.10 0.01 0.01 0.00
777.15 0.03 0.03 0.00
777.20 0.04 0.04 0.00
777.25 0.04 0.04 0.00
777.30 0.05 0.05 0.00
777.35 0.05 0.05 0.00
777.40 0.06 0.06 0.00
777.45 0.06 0.06 0.00
777.50 0.07 0.07 0.00
777.55 0.07 0.07 0.00
777.60 0.08 0.08 0.00
777.65 0.08 0.08 0.00
777.70 0.08 0.08 0.00
777.75 0.09 0.09 0.00
777.80 0.09 0.09 0.00
777.85 0.09 0.09 0.00
777.90 0.09 0.09 0.00
777.95 0.10 0.10 0.00
778.00 0.10 0.10 0.00
778.05 0.10 0.10 0.00
778.10 0.11 0.11 0.00
778.15 0.11 0.11 0.00
778.20 0.11 0.11 0.00
778.25 0.11 0.11 0.00
778.30 0.12 0.12 0.00
778.35 0.19 0.19 0.00
778.40 0.32 0.32 0.00
778.45 0.50 0.50 0.00
778.50 0.70 0.70 0.00
778.55 0.93 0.93 0.00
778.60 1.18 1.18 0.00
778.65 1.46 1.46 0.00
778.70 1.76 1.76 0.00
778.75 2.07 2.07 0.00
778.80 2.41 2.41 0.00
778.85 2.76 2.76 0.00
778.90 3.13 3.13 0.00
778.95 3.51 3.51 0.00
779.00 3.87 3.87 0.00
779.05 4.16 4.16 0.00
779.10 4.43 4.43 0.00
779.15 4.68 4.68 0.00
779.20 4.91 4.91 0.00
779.25 5.13 5.13 0.00
779.30 5.34 5.34 0.00
779.35 5.54 5.54 0.00
779.40 5.74 5.74 0.00
779.45 5.92 5.92 0.00
779.50 6.10 6.10 0.00
779.55 6.28 6.28 0.00
Elevation
(feet)
Discharge
(cfs)
Primary
(cfs)
Secondary
(cfs)
779.60 6.45 6.45 0.00
779.65 6.61 6.61 0.00
779.70 6.77 6.77 0.00
779.75 6.93 6.93 0.00
779.80 7.08 7.08 0.00
779.85 7.23 7.23 0.00
779.90 7.38 7.38 0.00
779.95 7.52 7.52 0.00
780.00 7.67 7.67 0.00
780.05 7.80 7.80 0.00
780.10 7.94 7.94 0.00
780.15 8.07 8.07 0.00
780.20 8.21 8.21 0.00
780.25 8.34 8.34 0.00
780.30 8.46 8.46 0.00
780.35 8.59 8.59 0.00
780.40 8.71 8.71 0.00
780.45 8.83 8.83 0.00
780.50 8.95 8.95 0.00
780.55 9.66 9.66 0.00
780.60 10.85 10.85 0.00
780.65 12.35 12.35 0.00
780.70 14.11 14.11 0.00
780.75 16.08 16.08 0.00
780.80 18.69 18.25 0.44
780.85 21.85 20.60 1.24
780.90 25.40 23.12 2.28
780.95 29.30 25.79 3.52
781.00 33.51 28.60 4.91
781.05 38.01 31.56 6.46
781.10 42.78 34.64 8.14
781.15 47.79 37.85 9.94
781.20 53.04 41.18 11.86
781.25 58.52 44.63 13.89
781.30 64.22 48.19 16.03
781.35 70.12 51.86 18.26
781.40 76.23 55.63 20.60
781.45 82.52 59.51 23.02
781.50 89.01 63.48 25.53
781.55 95.68 67.56 28.12
781.60 102.53 71.73 30.80
781.65 109.55 75.99 33.55
781.70 116.73 80.34 36.39
781.75 124.09 84.79 39.30
781.80 131.60 89.32 42.28
781.85 139.27 93.93 45.34
781.90 147.10 98.63 48.47
781.95 155.07 103.41 51.66
782.00 163.20 108.27 54.92
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 129HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 5P: Wet Pond 2
Elevation
(feet)
Surface
(sq-ft)
Storage
(cubic-feet)
777.00 11,324 0
777.05 11,420 569
777.10 11,516 1,142
777.15 11,613 1,720
777.20 11,710 2,303
777.25 11,807 2,891
777.30 11,905 3,484
777.35 12,003 4,082
777.40 12,102 4,684
777.45 12,201 5,292
777.50 12,300 5,904
777.55 12,400 6,522
777.60 12,500 7,144
777.65 12,601 7,772
777.70 12,702 8,405
777.75 12,804 9,042
777.80 12,905 9,685
777.85 13,008 10,333
777.90 13,110 10,986
777.95 13,214 11,644
778.00 13,317 12,307
778.05 13,416 12,975
778.10 13,515 13,649
778.15 13,615 14,327
778.20 13,715 15,010
778.25 13,816 15,698
778.30 13,916 16,392
778.35 14,017 17,090
778.40 14,119 17,793
778.45 14,221 18,502
778.50 14,323 19,216
778.55 14,426 19,934
778.60 14,529 20,658
778.65 14,632 21,387
778.70 14,736 22,121
778.75 14,840 22,861
778.80 14,944 23,605
778.85 15,049 24,355
778.90 15,155 25,110
778.95 15,260 25,871
779.00 15,366 26,636
779.05 15,470 27,407
779.10 15,574 28,183
779.15 15,679 28,965
779.20 15,783 29,751
779.25 15,889 30,543
779.30 15,994 31,340
779.35 16,100 32,142
779.40 16,206 32,950
779.45 16,313 33,763
779.50 16,420 34,581
779.55 16,527 35,405
Elevation
(feet)
Surface
(sq-ft)
Storage
(cubic-feet)
779.60 16,635 36,234
779.65 16,743 37,069
779.70 16,851 37,908
779.75 16,960 38,754
779.80 17,069 39,604
779.85 17,179 40,461
779.90 17,288 41,322
779.95 17,399 42,189
780.00 17,509 43,062
780.05 17,614 43,940
780.10 17,720 44,824
780.15 17,826 45,712
780.20 17,932 46,606
780.25 18,039 47,505
780.30 18,146 48,410
780.35 18,253 49,320
780.40 18,360 50,235
780.45 18,468 51,156
780.50 18,576 52,082
780.55 18,685 53,014
780.60 18,793 53,951
780.65 18,903 54,893
780.70 19,012 55,841
780.75 19,122 56,794
780.80 19,232 57,753
780.85 19,342 58,717
780.90 19,453 59,687
780.95 19,564 60,663
781.00 19,675 61,644
781.05 19,783 62,630
781.10 19,892 63,622
781.15 20,001 64,619
781.20 20,110 65,622
781.25 20,220 66,630
781.30 20,329 67,644
781.35 20,440 68,663
781.40 20,550 69,688
781.45 20,661 70,718
781.50 20,772 71,754
781.55 20,883 72,795
781.60 20,995 73,842
781.65 21,106 74,895
781.70 21,219 75,953
781.75 21,331 77,017
781.80 21,444 78,086
781.85 21,557 79,161
781.90 21,670 80,242
781.95 21,784 81,328
782.00 21,898 82,420
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 130HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Link 3L: Ex Drainage Areas
Inflow Area = 12.660 ac, 4.30% Impervious, Inflow Depth = 3.97" for 100-yr event
Inflow = 69.93 cfs @ 12.05 hrs, Volume= 4.190 af
Primary = 69.93 cfs @ 12.05 hrs, Volume= 4.190 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Link 3L: Ex Drainage Areas
Inflow
Primary
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)75
70
65
60
55
50
45
40
35
30
25
20
15
10
5
0
Inflow Area=12.660 ac
69.93 cfs
69.93 cfs
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 131HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Link 3L: Ex Drainage Areas
Time
(hours)
Inflow
(cfs)
Elevation
(feet)
Primary
(cfs)
0.00 0.00 0.00 0.00
2.50 0.00 0.00 0.00
5.00 0.00 0.00 0.00
7.50 0.00 0.00 0.00
10.00 0.63 0.00 0.63
12.50 9.92 0.00 9.92
15.00 2.38 0.00 2.38
17.50 1.53 0.00 1.53
20.00 1.06 0.00 1.06
22.50 0.94 0.00 0.94
25.00 0.00 0.00 0.00
27.50 0.00 0.00 0.00
30.00 0.00 0.00 0.00
32.50 0.00 0.00 0.00
35.00 0.00 0.00 0.00
37.50 0.00 0.00 0.00
40.00 0.00 0.00 0.00
42.50 0.00 0.00 0.00
45.00 0.00 0.00 0.00
47.50 0.00 0.00 0.00
50.00 0.00 0.00 0.00
52.50 0.00 0.00 0.00
55.00 0.00 0.00 0.00
57.50 0.00 0.00 0.00
60.00 0.00 0.00 0.00
62.50 0.00 0.00 0.00
65.00 0.00 0.00 0.00
67.50 0.00 0.00 0.00
70.00 0.00 0.00 0.00
72.50 0.00 0.00 0.00
75.00 0.00 0.00 0.00
77.50 0.00 0.00 0.00
80.00 0.00 0.00 0.00
82.50 0.00 0.00 0.00
85.00 0.00 0.00 0.00
87.50 0.00 0.00 0.00
90.00 0.00 0.00 0.00
92.50 0.00 0.00 0.00
95.00 0.00 0.00 0.00
97.50 0.00 0.00 0.00
100.00 0.00 0.00 0.00
102.50 0.00 0.00 0.00
105.00 0.00 0.00 0.00
107.50 0.00 0.00 0.00
110.00 0.00 0.00 0.00
112.50 0.00 0.00 0.00
115.00 0.00 0.00 0.00
117.50 0.00 0.00 0.00
120.00 0.00 0.00 0.00
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 132HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Link 7L: POI-1
Inflow Area = 4.440 ac, 57.82% Impervious, Inflow Depth > 5.32" for 100-yr event
Inflow = 16.97 cfs @ 11.97 hrs, Volume= 1.967 af
Primary = 16.97 cfs @ 11.97 hrs, Volume= 1.967 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Link 7L: POI-1
Inflow
Primary
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Inflow Area=4.440 ac
16.97 cfs
16.97 cfs
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 133HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Link 7L: POI-1
Time
(hours)
Inflow
(cfs)
Elevation
(feet)
Primary
(cfs)
0.00 0.00 0.00 0.00
2.50 0.00 0.00 0.00
5.00 0.00 0.00 0.00
7.50 0.02 0.00 0.02
10.00 0.13 0.00 0.13
12.50 7.79 0.00 7.79
15.00 1.07 0.00 1.07
17.50 0.64 0.00 0.64
20.00 0.45 0.00 0.45
22.50 0.37 0.00 0.37
25.00 0.10 0.00 0.10
27.50 0.06 0.00 0.06
30.00 0.05 0.00 0.05
32.50 0.05 0.00 0.05
35.00 0.05 0.00 0.05
37.50 0.05 0.00 0.05
40.00 0.05 0.00 0.05
42.50 0.05 0.00 0.05
45.00 0.04 0.00 0.04
47.50 0.04 0.00 0.04
50.00 0.04 0.00 0.04
52.50 0.04 0.00 0.04
55.00 0.04 0.00 0.04
57.50 0.03 0.00 0.03
60.00 0.03 0.00 0.03
62.50 0.03 0.00 0.03
65.00 0.03 0.00 0.03
67.50 0.03 0.00 0.03
70.00 0.02 0.00 0.02
72.50 0.02 0.00 0.02
75.00 0.02 0.00 0.02
77.50 0.02 0.00 0.02
80.00 0.02 0.00 0.02
82.50 0.01 0.00 0.01
85.00 0.01 0.00 0.01
87.50 0.01 0.00 0.01
90.00 0.01 0.00 0.01
92.50 0.01 0.00 0.01
95.00 0.01 0.00 0.01
97.50 0.01 0.00 0.01
100.00 0.00 0.00 0.00
102.50 0.00 0.00 0.00
105.00 0.00 0.00 0.00
107.50 0.00 0.00 0.00
110.00 0.00 0.00 0.00
112.50 0.00 0.00 0.00
115.00 0.00 0.00 0.00
117.50 0.00 0.00 0.00
120.00 0.00 0.00 0.00
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 134HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Link 8L: POI-2
Inflow Area = 7.380 ac, 60.57% Impervious, Inflow Depth = 5.58" for 100-yr event
Inflow = 41.37 cfs @ 12.04 hrs, Volume= 3.432 af
Primary = 41.37 cfs @ 12.04 hrs, Volume= 3.432 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Link 8L: POI-2
Inflow
Primary
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)46
44
42
40
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
Inflow Area=7.380 ac
41.37 cfs
41.37 cfs
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 135HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Link 8L: POI-2
Time
(hours)
Inflow
(cfs)
Elevation
(feet)
Primary
(cfs)
0.00 0.00 0.00 0.00
2.50 0.00 0.00 0.00
5.00 0.00 0.00 0.00
7.50 0.03 0.00 0.03
10.00 0.08 0.00 0.08
12.50 8.96 0.00 8.96
15.00 2.43 0.00 2.43
17.50 1.15 0.00 1.15
20.00 0.80 0.00 0.80
22.50 0.65 0.00 0.65
25.00 0.27 0.00 0.27
27.50 0.11 0.00 0.11
30.00 0.11 0.00 0.11
32.50 0.11 0.00 0.11
35.00 0.10 0.00 0.10
37.50 0.10 0.00 0.10
40.00 0.10 0.00 0.10
42.50 0.09 0.00 0.09
45.00 0.09 0.00 0.09
47.50 0.09 0.00 0.09
50.00 0.08 0.00 0.08
52.50 0.08 0.00 0.08
55.00 0.07 0.00 0.07
57.50 0.07 0.00 0.07
60.00 0.07 0.00 0.07
62.50 0.06 0.00 0.06
65.00 0.06 0.00 0.06
67.50 0.05 0.00 0.05
70.00 0.05 0.00 0.05
72.50 0.04 0.00 0.04
75.00 0.04 0.00 0.04
77.50 0.04 0.00 0.04
80.00 0.03 0.00 0.03
82.50 0.03 0.00 0.03
85.00 0.02 0.00 0.02
87.50 0.02 0.00 0.02
90.00 0.02 0.00 0.02
92.50 0.01 0.00 0.01
95.00 0.01 0.00 0.01
97.50 0.01 0.00 0.01
100.00 0.01 0.00 0.01
102.50 0.01 0.00 0.01
105.00 0.01 0.00 0.01
107.50 0.00 0.00 0.00
110.00 0.00 0.00 0.00
112.50 0.00 0.00 0.00
115.00 0.00 0.00 0.00
117.50 0.00 0.00 0.00
120.00 0.00 0.00 0.00
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 136HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Summary for Link 9L: Combined
Inflow Area = 11.820 ac, 59.53% Impervious, Inflow Depth = 5.48" for 100-yr event
Inflow = 55.02 cfs @ 12.03 hrs, Volume= 5.399 af
Primary = 55.02 cfs @ 12.03 hrs, Volume= 5.399 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Link 9L: Combined
Inflow
Primary
Hydrograph
Time (hours)
12011511010510095908580757065605550454035302520151050Flow (cfs)60
55
50
45
40
35
30
25
20
15
10
5
0
Inflow Area=11.820 ac
55.02 cfs
55.02 cfs
Type II 24-hr 100-yr Rainfall=7.36"Cambridge Village - HydroCAD with ODA
Printed 4/14/2020Prepared by {enter your company name here}
Page 137HydroCAD® 10.00-24 s/n 08311 © 2018 HydroCAD Software Solutions LLC
Hydrograph for Link 9L: Combined
Time
(hours)
Inflow
(cfs)
Elevation
(feet)
Primary
(cfs)
0.00 0.00 0.00 0.00
2.50 0.00 0.00 0.00
5.00 0.00 0.00 0.00
7.50 0.06 0.00 0.06
10.00 0.21 0.00 0.21
12.50 16.75 0.00 16.75
15.00 3.50 0.00 3.50
17.50 1.79 0.00 1.79
20.00 1.25 0.00 1.25
22.50 1.02 0.00 1.02
25.00 0.38 0.00 0.38
27.50 0.17 0.00 0.17
30.00 0.17 0.00 0.17
32.50 0.16 0.00 0.16
35.00 0.16 0.00 0.16
37.50 0.15 0.00 0.15
40.00 0.14 0.00 0.14
42.50 0.14 0.00 0.14
45.00 0.13 0.00 0.13
47.50 0.13 0.00 0.13
50.00 0.12 0.00 0.12
52.50 0.12 0.00 0.12
55.00 0.11 0.00 0.11
57.50 0.10 0.00 0.10
60.00 0.10 0.00 0.10
62.50 0.09 0.00 0.09
65.00 0.09 0.00 0.09
67.50 0.08 0.00 0.08
70.00 0.07 0.00 0.07
72.50 0.07 0.00 0.07
75.00 0.06 0.00 0.06
77.50 0.05 0.00 0.05
80.00 0.05 0.00 0.05
82.50 0.04 0.00 0.04
85.00 0.03 0.00 0.03
87.50 0.03 0.00 0.03
90.00 0.02 0.00 0.02
92.50 0.02 0.00 0.02
95.00 0.02 0.00 0.02
97.50 0.01 0.00 0.01
100.00 0.01 0.00 0.01
102.50 0.01 0.00 0.01
105.00 0.01 0.00 0.01
107.50 0.01 0.00 0.01
110.00 0.01 0.00 0.01
112.50 0.01 0.00 0.01
115.00 0.01 0.00 0.01
117.50 0.01 0.00 0.01
120.00 0.01 0.00 0.01
Channel Report
Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc.Monday, Apr 13 2020
Wet Pond 1 Bypass Ditch
Triangular
Side Slopes (z:1) = 2.00, 3.00
Total Depth (ft) = 1.50
Invert Elev (ft) = 783.00
Slope (%) = 1.00
N-Value = 0.030
Calculations
Compute by: Known Q
Known Q (cfs) = 11.65
Highlighted
Depth (ft) = 1.19
Q (cfs) = 11.65
Area (sqft) = 3.54
Velocity (ft/s) = 3.29
Wetted Perim (ft) = 6.42
Crit Depth, Yc (ft) = 1.07
Top Width (ft) = 5.95
EGL (ft) = 1.36
0 1 2 3 4 5 6 7 8 9 10
Elev (ft)Depth (ft)Section
782.50 -0.50
783.00 0.00
783.50 0.50
784.00 1.00
784.50 1.50
785.00 2.00
Reach (ft)
Okay
14.01 Drainage Area (Acres; C=0.3)
7.06 Disturbed Area (Acres; C=0.6)
0.45 C (weighted)
7.1 i (10-Year)
44.88 Peak Flow from 10-year Storm (cfs)
12708 Required Volume ft3
19522 Required Surface Area ft2
98.8 Suggested Width ft
197.6 Suggested Length ft
N/A Trial Top Width at Spillway Invert ft
N/A Trial Top Length at Spillway Invert ft
N/A Trial Side Slope Ratio Z:1
N/A Trial Depth ft (2 to 3.5 feet above grade)
N/A Bottom Width ft
N/A Bottom Length ft
N/A Bottom Area ft2
49587 Actual Volume ft3 Okay
19675 Actual Surface Area ft2 Okay
16 Trial Weir Length ft
1 Trial Depth of Flow ft
48.0 Spillway Capacity cfs Okay
6 Skimmer Size (inches)Skimmer Size
0.417 Head on Skimmer (feet)(Inches)
1.75 Orifice Size (1/4 inch increments)1.5
2.78 Dewatering Time (days)2
Suggest about 3 days 2.5
3
4
5
6
8
Sediment Basin #1
Okay
1.19 Disturbed Area (Acres)
0.6 C
7.1 i (10-Year)
5.07 Peak Flow from 10-year Storm (cfs)
2142 Required Volume ft3
1648 Required Surface Area ft2
28.7 Suggested Width ft
57.4 Suggested Length ft
37 Trial Top Width at Spillway Invert ft
66 Trial Top Length at Spillway Invert ft
3 Trial Side Slope Ratio Z:1
3 Trial Depth ft (2 to 3.5 feet above grade)
19 Bottom Width ft
48 Bottom Length ft
912 Bottom Area ft2
4869 Actual Volume ft3 Okay
2442 Actual Surface Area ft2 Okay
5 Trial Weir Length ft
0.5 Trial Depth of Flow ft
5.3 Spillway Capacity cfs Okay
1.5 Skimmer Size (inches) Skimmer Size
0.125 Head on Skimmer (feet) (Inches)
1 Orifice Size (1/4 inch increments) 1.5
2.62 Dewatering Time (days) 2
Suggest about 3 days 2.5
3
4
5
6
8
Skimmer Basin #2
Okay
4.06 Disturbed Area (Acres)
0.6 C
7.1 i (10-Year)
17.30 Peak Flow from 10-year Storm (cfs)
7308 Required Volume ft3
5621 Required Surface Area ft2
53.0 Suggested Width ft
106.0 Suggested Length ft
N/A Trial Top Width at Spillway Invert ft
N/A Trial Top Length at Spillway Invert ft
N/A Trial Side Slope Ratio Z:1
N/A Trial Depth ft (2 to 3.5 feet above grade)
N/A Bottom Width ft
N/A Bottom Length ft
N/A Bottom Area ft2
35429 Actual Volume ft3 Okay
12569 Actual Surface Area ft2 Okay
20 Trial Weir Length ft
1 Trial Depth of Flow ft
60.0 Spillway Capacity cfs Okay
3 Skimmer Size (inches)Skimmer Size
0.25 Head on Skimmer (feet)(Inches)
1.5 Orifice Size (1/4 inch increments)1.5
2.81 Dewatering Time (days)2
Suggest about 3 days 2.5
3
4
5
6
8
Skimmer Basin #3
Structure Name: A10Diameter 24 in 2 ftClass MidrangeQ 19.04 cfsA4d500.4 feet 4.8 in B 8dmax7.20 inches110La12 feet214W 14 feetThickness 18 inchesW@outlet 6 feetClass B6.0 FT 14.0 FT12.0 FT
Structure Name: B10Diameter 24 in 2 ftClass MidrangeQ9.66cfsA4d500.4 feet 4.8 in B 8dmax7.20 inches110La12 feet214W 14 feetThickness 18 inchesW@outlet 6 feetClass B6.0 FT 14.0 FT12.0 FT