05 - Storm Water Calculations & Geotechnical Report.pdf

PDF 5 MB Posted Aug 21, 2023

Attached to: GUT813130A Nutrient Reduction Wetland
Solicitation number: 23-06
Issued by: Grundy County, Iowa

About this file

Written by GovTribe AI · Aug 2, 2024

This document describes a state and local contract opportunity for the construction of a nutrient reduction wetland in Grundy County, Iowa. The project involves, but is not limited to, selective clearing, excavation, grading, steel sheet pile weir construction, tile installation, CMP water control structure, and seeding. The estimated quantities include 14,500 cubic yards of earthwork, 1,770 square feet of sheet pile, 2,100 linear feet of tile installation, 970 tons of riprap, 140 cubic yards of grout, and 18 acres of seeding. The estimated construction cost range for this project is $390,000 to $440,000. In order to be included on the plan holders list, which is required to receive meeting minutes, addenda and an updated plan holders list, bidders must follow the instructions in the Notice to Bidders.

The contract includes funding requirements and sources, but specific details are not provided in the document. No information is given about any set asides, incumbents, or the current competitive environment for this contract opportunity. The term of the contract and any renewal options are also not specified.

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Other files

File	Type	Posted
01-General Requirements.pdf	PDF	Aug 21, 2023
03 - Specifications 06-06-2023.pdf	PDF	Aug 21, 2023
Notice to Bidders.pdf	PDF	Aug 21, 2023
02- Submittals.pdf	PDF	Aug 21, 2023
04 - Plans 06-06-2023.pdf	PDF	Aug 21, 2023
08 - NNB Permit.pdf	PDF	Aug 21, 2023
Pre-bid documents.pdf	PDF	Aug 21, 2023
06 - Appendix II.pdf	PDF	Aug 21, 2023
07 - Guthrie County Inspection Plan.pdf	PDF	Aug 21, 2023

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STORM WATER CALCULATIONS

For:

GRETEMAN WETLAND

GUT813130A

Iowa Department of Agriculture and Land Stewardship

Bayard, Iowa

S-H PROJECT # 4213850

May 24, 2023

I hereby certify that the portion of this engineering document was prepared by me or under my direct personal supervision. I am a duly licensed Professional Engineer under the laws of the State of Iowa.

Signature: ____________________________________________

Name: Dan Jensen, P.E. .

Date: _________________________

My license renewal date is December 31, 2023.

Pages, sheets, or divisions covered by this certification: ________

_All Sheets; excluding geotechnical report __________________

Prepared by:

4125 Westown Parkway, Suite 100 – West Des Moines, Iowa 50266

(515) 223-8104

05/24/2023

TABLE OF CONTENTS

1.) Project Summary

2.) Drainage Area Map

3.) Soil Map/Land Characteristics

4.) Principal Spillway Calculations

5.) Geotechnical Report

6.) Specifications

PROJECT SUMMARY

GENERAL

The proposed work includes construction of a wetland to the southeast of Bayard, IA. The location can be more specifically described as the NE ¼ of Section 30, Township 81 North, Range 31 West of the Fifth Principal meridian, Guthrie County, Iowa. A dam and sheet pile weir structure will be constructed to impound water for the wetland. A drawdown structure on the dam will allow for pool elevation control.

DESIGN STANDARDS, ANALYSIS, AND ASSUMPTIONS

The design procedures and guidelines were obtained from the following resources:

1. “National Engineering Handbook 4 – Hydrology”

2. “Technical Release No. 60 – Earth Dams and Reservoirs” (United States Soil Conservation Service)

3. “Iowa Administrative Code Chapter 73”

4. “NRCS Practice Standard 378”

DESIGN CRITERIA AND GUIDELINES

HAZARD CLASSIFICATION

Structures located in areas where damages from a failure would be limited to loss of the dam, loss of livestock, damages to farm out-buildings, agricultural lands, and lesser used roads, and where loss of human life is considered unlikely. Therefore, the structure shall be classified as low hazard.

STRUCTURE CLASSIFICATION

The height of the top of dam measured above the elevation of the channel bottom at the centerline of the dam (in feet) multiplied by the total storage volume (in acre-feet) is 521 (9 ft. x 53.8 acre-feet = 482) which is considerably less than the threshold of 30,000 required for a low hazard dam to be classified as a major structure. Therefore, the structure shall be classified as a minor structure.

WATER CONTROL STRUCTURE

The water control structure is a 48” diameter CMP riser equipped with stop logs for water elevation control. 18’’ CMP will enter the structure from the pool area and 18’’ CMP will exit the manhole structure and daylight downstream of the principal spillway sheet pile structure within the grouted plunge pool.

PRINCIPAL SPILLWAY

The principal spillway consists of a 65’ wide steel sheet pile structure in the embankment at an elevation of 1145.00’. Since the structure is low hazard with a drainage area greater than 250 acres (292 acres), the principal spillway must pass the 10-year, 24-hour storm according to IAC Chapter 73. In lieu of the 10-year, 24-hour storm, the spillway was sized to pass the 25-year, 24-hour storm to meet NRCS 378 requirements. This equates to a storm producing a rainfall depth of 5.6”. The 25-year, 24-hour storm will produce a discharge of 582 cfs through the principal spillway and a peak water surface elevation of

1146.99. The auxiliary spillway elevation is set at 1147.00.

FREEBOARD DESIGN

Based on IAC 567, the freeboard design storm for a low hazard structure shall be the 100-year, 24-hour storm. This equates to a storm producing a rainfall depth of 7.7”. The 100-year, 24-hour storm will produce a discharge of 929 cfs through the principal spillway and a peak water surface elevation of

1147.55. The top of dam elevation is set at 1149.00.

IMPOUNDMENT LIFE

The Impoundment life was calculated using estimated sediment delivery and NRCS standard total erosion rate estimates. The erosion rates are based on the Average Annual Soil Erosion by Water on Cropland and CRP Land, 1982, published by USDA and revised in December 2000. This indicated that the erosion rates for the area ranged from 3 to 5 tons per acre per year. Furthermore, sediment delivery was based on NRCS FOTG “Erosion & Sediment Delivery”, (Chart I: Estimated sediment delivery for landform regions). The chart indicated a sediment delivery percentage of approximately 8% for a 291 acre drainage area located in the Des Moines Lobe. Finally, the estimated sediment storage is based on the forebay capacity (0.47 ac-ft) and the normal pool storage volume of 7.40 ac-ft).

Based on the assumed soil erosion rate (5 T/Ac/yr), delivery ratio (8%), a sediment unit weight of 100 PCF, and sediment capture rate of 70% of delivered sediment, approximately 81.5 tons of sediment per year (1630 CF) is anticipated to be retained in the wetland. With a total sediment capacity of 7.87 ac-ft, this equates to an expected impoundment life of 210 years.

GEOTECHNICAL INVESTIGATION AND EVALUATION

A geotechnical investigation has been completed by Allender Butzke Engineers for the proposed wetland. A report compiling the findings and associated recommendations is included in Section 5 of this report.

DRAINAGE AREA = 292 ACRES

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Hydrologic Soil Group—Guthrie County, Iowa (HydrologicSoilGroup - Greteman)

Natural Resources Conservation Service

Web Soil Survey National Cooperative Soil Survey

9/27/2022

374600 374800 375000 375200 375400 375600 375800 376000 376200 376400 376600

41° 48' 35'' N

7' ' W

41° 48' 35'' N

'' W

41° 47' 49'' N

7' ' W

41° 47' 49'' N

'' W

Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 15N WGS84 0 450 900 1800 2700

Feet 0 100 200 400 600

Meters Map Scale: 1:10,000 if printed on A landscape (11" x 8.5") sheet.

MAP LEGEND MAP INFORMATION

Area of Interest (AOI) Area of Interest (AOI)

Soils Soil Rating Polygons

A/D

B/D

C/D

Not rated or not available

Soil Rating Lines A

A/D

B/D

C/D

Not rated or not available

Soil Rating Points A

A/D

B/D

C/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 1:15,800.

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: Guthrie County, Iowa Survey Area Data: Version 30, Sep 14, 2021

Soil map units are labeled (as space allows) for map scales 1:50,000 or larger.

Date(s) aerial images were photographed: May 4, 2021—Jun 4, 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—Guthrie County, Iowa (HydrologicSoilGroup - Greteman)

Natural Resources Conservation Service

Web Soil Survey National Cooperative Soil Survey

9/27/2022

Hydrologic Soil Group

Map unit symbol Map unit name Rating Acres in AOI Percent of AOI

11B Colo-Judson silty clay loams, 0 to 5 percent slopes, occasionally flooded

C/D 7.5 2.5%

51A+ Vesser silt loam, 0 to 2 percent slopes, overwash, occasionally flooded

C/D 28.5 9.5%

138D2 Clarion loam, 9 to 14 percent slopes, moderately eroded

B 27.1 9.0%

138E Clarion loam, 14 to 18 percent slopes

B 24.1 8.0%

308C Wadena loam, 6 to 12 percent slopes

B 0.9 0.3%

370D2 Sharpsburg silty clay loam, 9 to 14 percent slopes, eroded

C 7.1 2.4%

428B Ely silty clay loam, dissected till plain, 2 to 5 percent slopes

C/D 3.4 1.1%

L55 Nicollet loam, 1 to 3 percent slopes

B/D 18.8 6.3%

L62C2 Storden loam, Bemis moraine, 6 to 10 percent slopes, moderately eroded

B 14.4 4.8%

L62D2 Storden loam, Bemis moraine, 10 to 16 percent slopes, moderately eroded

B 56.6 18.9%

L62E2 Storden loam, Bemis moraine, 10 to 22 percent slopes, moderately eroded

B 15.5 5.2%

L62F Belview loam, Bemis moraine, 16 to 30 percent slopes

B 2.6 0.9%

L138B Clarion loam, Bemis moraine, 2 to 6 percent slopes

B 20.7 6.9%

L138C Clarion loam, Bemis moraine, 6 to 10 percent slopes

B 38.9 13.0%

Hydrologic Soil Group—Guthrie County, Iowa HydrologicSoilGroup - Greteman

Natural Resources Conservation Service

Web Soil Survey National Cooperative Soil Survey

Map unit symbol Map unit name Rating Acres in AOI Percent of AOI

L138C2 Clarion loam, Bemis moraine, 6 to 10 percent slopes, moderately eroded

B 34.0 11.3%

Totals for Area of Interest 300.0 100.0%

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.

Rating Options

Aggregation Method: Dominant Condition

Component Percent Cutoff: None Specified

Tie-break Rule: Higher

Hydrologic Soil Group—Guthrie County, Iowa HydrologicSoilGroup - Greteman

Natural Resources Conservation Service

Web Soil Survey National Cooperative Soil Survey

47Outlet Input Data, 50 years (Post-Development 50 year)

45Outlet Input Data, 25 years (Post-Development 25 year)

SheetPile

Elevation-Area Volume Curve, 100 years (Post-Development 100 year)

Elevation-Area Volume Curve, 50 years (Post-Development 50 year)

Elevation-Area Volume Curve, 25 years (Post-Development 25 year)

Wetland Basin

39Time vs. Volume, 100 years (Post-Development 100 year)

36Time vs. Volume, 50 years (Post-Development 50 year)

33Time vs. Volume, 25 years (Post-Development 25 year)

Wetland Basin

30Time vs. Elevation, 100 years (Post-Development 100 year)

27Time vs. Elevation, 50 years (Post-Development 50 year)

24Time vs. Elevation, 25 years (Post-Development 25 year)

Wetland Basin (OUT)

23Addition Summary, 100 years (Post-Development 100 year)

22Addition Summary, 50 years (Post-Development 50 year)

21Addition Summary, 25 years (Post-Development 25 year)

FES-1.2

Unit Hydrograph Summary, 100 years (Post-Development 100 year)

Unit Hydrograph Summary, 50 years (Post-Development 50 year)

Unit Hydrograph Summary, 25 years (Post-Development 25 year)

OverlandFlow

Time of Concentration Calculations, 100 years (Post- Development 100 year)

Time of Concentration Calculations, 50 years (Post- Development 50 year)

Time of Concentration Calculations, 25 years (Post- Development 25 year)

OverlandFlow

7Time-Depth Curve, 50 years (Post-Development 50 year)

5Time-Depth Curve, 25 years (Post-Development 25 year)

3Time-Depth Curve, 100 years (Post-Development 100 year)

MSE3

1Master Network Summary

Table of Contents

Table of Contents 49Outlet Input Data, 100 years (Post-Development 100 year)

IDALS - GUT813130A

Subsection: Master Network Summary

Catchments Summary

Peak Flow (ft³/s)

Time to Peak (hours)

Hydrograph Volume (ac-ft)

Return Event

(years)

ScenarioLabel

722.0812.50085.07925Post-Development 25 year

OverlandFlow

905.0912.500106.98350Post-Development 50 year

OverlandFlow

1,108.0112.500131.603100Post-Development 100 year

OverlandFlow

12.000.00099.17425Post-Development 25 year

Combined Tile Flow

12.000.00099.17450Post-Development 50 year

Combined Tile Flow

12.000.00099.174100Post-Development 100 year

Combined Tile Flow

Node Summary

Peak Flow (ft³/s)

Time to Peak (hours)

Hydrograph Volume (ac-ft)

Return Event

(years)

ScenarioLabel

582.0712.750107.97625Post-Development 25 year

FES-1.2

747.5212.750129.81150Post-Development 50 year

FES-1.2

929.5312.700154.355100Post-Development 100 year

FES-1.2

Pond Summary

Maximum Pond Storage

(ac-ft)

Maximum Water

Surface Elevation

(ft)

Peak Flow (ft³/s)

Time to Peak (hours)

Hydrograph Volume (ac-ft)

Return Event

(years)

ScenarioLabel

(N/A)(N/A)734.0812.500108.88125Post- Development 25 year

Wetland Basin (IN)

24.2691,146.99582.0712.750107.97625Post- Development 25 year

Wetland Basin (OUT)

(N/A)(N/A)917.0912.500130.78550Post- Development 50 year

Wetland Basin (IN)

27.5681,147.27747.5212.750129.81150Post- Development 50 year

Wetland Basin (OUT)

Page 1 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Bentley Systems, Inc. Haestad Methods Solution CenterGuthrie - Section 4 - MSE3-Update.ppc

Subsection: Master Network Summary

Pond Summary

Maximum Pond Storage

(ac-ft)

Maximum Water

Surface Elevation

(ft)

Peak Flow (ft³/s)

Time to Peak (hours)

Hydrograph Volume (ac-ft)

Return Event

(years)

ScenarioLabel

(N/A)(N/A)1,120.0112.500155.405100Post- Development 100 year

Wetland Basin (IN)

31.2341,147.55929.5312.700154.355100Post- Development 100 year

Wetland Basin (OUT)

Page 2 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Scenario: Post-Development 100 year

Storm Event: 100 yearLabel: MSE3

Return Event: 100 yearsSubsection: Time-Depth Curve

Time-Depth Curve: 100 year

100 year Label hours0.000Start Time hours0.100Increment hours24.000End Time years100Return Event

CUMULATIVE RAINFALL (in)

Output Time Increment = 0.100 hours

Time on left represents time for first value in each row.

Depth (in)

Time (hours)

0.00.00.00.00.00.000

0.00.00.00.00.00.500

0.00.00.00.00.01.000

0.10.10.10.10.01.500

0.10.10.10.10.12.000

0.10.10.10.10.12.500

0.20.10.10.10.13.000

0.20.20.20.20.23.500

0.20.20.20.20.24.000

0.30.30.30.30.24.500

0.30.30.30.30.35.000

0.40.40.40.30.35.500

0.40.40.40.40.46.000

0.50.50.50.50.46.500

0.60.50.50.50.57.000

0.60.60.60.60.67.500

0.70.70.70.70.68.000

0.80.80.70.70.78.500

0.90.90.80.80.89.000

1.01.01.00.90.99.500

1.21.11.11.11.110.000

1.41.31.31.21.210.500

1.81.71.61.61.511.000

2.92.52.22.01.911.500

5.65.45.24.83.612.000

6.16.06.05.95.812.500

6.46.46.36.36.213.000

6.66.66.56.56.513.500

6.76.76.76.66.614.000

6.96.86.86.86.814.500

6.96.96.96.96.915.000

7.07.07.07.07.015.500

7.17.17.17.07.016.000

7.17.17.17.17.116.500

Page 3 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Storm Event: 100 yearLabel: MSE3

Return Event: 100 yearsSubsection: Time-Depth Curve

CUMULATIVE RAINFALL (in)

Output Time Increment = 0.100 hours

Time on left represents time for first value in each row.

Depth (in)

Time (hours)

7.27.27.27.27.217.000

7.37.37.27.27.217.500

7.37.37.37.37.318.000

7.47.47.47.37.318.500

7.47.47.47.47.419.000

7.57.57.47.47.419.500

7.57.57.57.57.520.000

7.57.57.57.57.520.500

7.67.67.67.57.521.000

7.67.67.67.67.621.500

7.67.67.67.67.622.000

7.67.67.67.67.622.500

7.77.77.67.67.623.000

7.77.77.77.77.723.500

(N/A)(N/A)(N/A)(N/A)7.724.000

Page 4 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Scenario: Post-Development 25 year

Storm Event: 25 yearLabel: MSE3

Return Event: 25 yearsSubsection: Time-Depth Curve

Time-Depth Curve: 25 year

25 year Label hours0.000Start Time hours0.100Increment hours24.000End Time years25Return Event

CUMULATIVE RAINFALL (in)

Output Time Increment = 0.100 hours

Time on left represents time for first value in each row.

Depth (in)

Time (hours)

0.00.00.00.00.00.000

0.00.00.00.00.00.500

0.00.00.00.00.01.000

0.00.00.00.00.01.500

0.10.10.10.10.12.000

0.10.10.10.10.12.500

0.10.10.10.10.13.000

0.10.10.10.10.13.500

0.20.20.20.20.14.000

0.20.20.20.20.24.500

0.20.20.20.20.25.000

0.30.30.30.30.25.500

0.30.30.30.30.36.000

0.40.40.30.30.36.500

0.40.40.40.40.47.000

0.50.40.40.40.47.500

0.50.50.50.50.58.000

0.60.60.50.50.58.500

0.60.60.60.60.69.000

0.70.70.70.70.79.500

0.90.80.80.80.810.000

1.01.00.90.90.910.500

1.31.31.21.11.111.000

2.11.81.61.51.411.500

4.14.03.83.52.612.000

4.54.44.34.34.212.500

4.74.64.64.64.513.000

4.84.84.84.74.713.500

4.94.94.94.84.814.000

5.05.05.04.94.914.500

5.15.05.05.05.015.000

5.15.15.15.15.115.500

5.25.25.15.15.116.000

5.25.25.25.25.216.500

Page 5 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Storm Event: 25 yearLabel: MSE3

Return Event: 25 yearsSubsection: Time-Depth Curve

CUMULATIVE RAINFALL (in)

Output Time Increment = 0.100 hours

Time on left represents time for first value in each row.

Depth (in)

Time (hours)

5.35.25.25.25.217.000

5.35.35.35.35.317.500

5.35.35.35.35.318.000

5.45.45.45.45.318.500

5.45.45.45.45.419.000

5.45.45.45.45.419.500

5.55.55.55.55.420.000

5.55.55.55.55.520.500

5.55.55.55.55.521.000

5.55.55.55.55.521.500

5.65.55.55.55.522.000

5.65.65.65.65.622.500

5.65.65.65.65.623.000

5.65.65.65.65.623.500

(N/A)(N/A)(N/A)(N/A)5.624.000

Page 6 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Scenario: Post-Development 50 year

Storm Event: 50 yearLabel: MSE3

Return Event: 50 yearsSubsection: Time-Depth Curve

Time-Depth Curve: 50 year

50 year Label hours0.000Start Time hours0.100Increment hours24.000End Time years50Return Event

CUMULATIVE RAINFALL (in)

Output Time Increment = 0.100 hours

Time on left represents time for first value in each row.

Depth (in)

Time (hours)

0.00.00.00.00.00.000

0.00.00.00.00.00.500

0.00.00.00.00.01.000

0.10.10.00.00.01.500

0.10.10.10.10.12.000

0.10.10.10.10.12.500

0.10.10.10.10.13.000

0.20.20.20.10.13.500

0.20.20.20.20.24.000

0.20.20.20.20.24.500

0.30.30.30.30.25.000

0.30.30.30.30.35.500

0.40.40.40.30.36.000

0.40.40.40.40.46.500

0.50.50.50.40.47.000

0.50.50.50.50.57.500

0.60.60.60.60.68.000

0.70.70.60.60.68.500

0.80.70.70.70.79.000

0.90.90.80.80.89.500

1.01.01.00.90.910.000

1.21.21.11.11.010.500

1.51.51.41.31.311.000

2.52.11.91.81.611.500

4.84.74.44.13.012.000

5.25.25.15.04.912.500

5.55.55.45.45.313.000

5.75.65.65.65.613.500

5.85.75.75.75.714.000

5.95.95.85.85.814.500

6.05.95.95.95.915.000

6.06.06.06.06.015.500

6.16.16.16.06.016.000

6.16.16.16.16.116.500

Page 7 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

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PondPack CONNECT Edition [10.02.00.01]

Storm Event: 50 yearLabel: MSE3

Return Event: 50 yearsSubsection: Time-Depth Curve

CUMULATIVE RAINFALL (in)

Output Time Increment = 0.100 hours

Time on left represents time for first value in each row.

Depth (in)

Time (hours)

6.26.26.26.26.117.000

6.26.26.26.26.217.500

6.36.36.36.36.218.000

6.36.36.36.36.318.500

6.46.46.36.36.319.000

6.46.46.46.46.419.500

6.46.46.46.46.420.000

6.56.56.56.46.420.500

6.56.56.56.56.521.000

6.56.56.56.56.521.500

6.56.56.56.56.522.000

6.66.66.56.56.522.500

6.66.66.66.66.623.000

6.66.66.66.66.623.500

(N/A)(N/A)(N/A)(N/A)6.624.000

Page 8 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Storm Event: 25 yearLabel: OverlandFlow

Return Event: 25 yearsSubsection: Time of Concentration Calculations

Time of Concentration Results

Segment #1: SCS Lag ft6,012.00Hydraulic Length

81.000CN

ft/ft0.087Slope ft/s2.29Average Velocity hours0.730 Segment Time of Concentration

Time of Concentration (Composite) hours0.730 Time of Concentration (Composite)

Page 9 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Storm Event: 25 yearLabel: OverlandFlow

Return Event: 25 yearsSubsection: Time of Concentration Calculations

==== SCS Lag

0.000877 * (Lf**0.8) * ((1000/CN)-9)**0.7) * (Sf**-0.5)Tc =

Tc= Time of concentration, hours Lf= Flow length, feet CN= SCS Curve Number Sf= Slope, ft/ft

Where:

Page 10 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Storm Event: 50 yearLabel: OverlandFlow

Return Event: 50 yearsSubsection: Time of Concentration Calculations

Time of Concentration Results

Segment #1: SCS Lag ft6,012.00Hydraulic Length

81.000CN

ft/ft0.087Slope ft/s2.29Average Velocity hours0.730 Segment Time of Concentration

Time of Concentration (Composite) hours0.730 Time of Concentration (Composite)

Page 11 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Storm Event: 50 yearLabel: OverlandFlow

Return Event: 50 yearsSubsection: Time of Concentration Calculations

==== SCS Lag

0.000877 * (Lf**0.8) * ((1000/CN)-9)**0.7) * (Sf**-0.5)Tc =

Tc= Time of concentration, hours Lf= Flow length, feet CN= SCS Curve Number Sf= Slope, ft/ft

Where:

Page 12 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Storm Event: 100 yearLabel: OverlandFlow

Return Event: 100 yearsSubsection: Time of Concentration Calculations

Time of Concentration Results

Segment #1: SCS Lag ft6,012.00Hydraulic Length

81.000CN

ft/ft0.087Slope ft/s2.29Average Velocity hours0.730 Segment Time of Concentration

Time of Concentration (Composite) hours0.730 Time of Concentration (Composite)

Page 13 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Storm Event: 100 yearLabel: OverlandFlow

Return Event: 100 yearsSubsection: Time of Concentration Calculations

==== SCS Lag

0.000877 * (Lf**0.8) * ((1000/CN)-9)**0.7) * (Sf**-0.5)Tc =

Tc= Time of concentration, hours Lf= Flow length, feet CN= SCS Curve Number Sf= Slope, ft/ft

Where:

Page 14 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Storm Event: 25 yearLabel: OverlandFlow

Return Event: 25 yearsSubsection: Unit Hydrograph Summary

25 yearStorm Event years25Return Event hours24.000Duration in5.6Depth hours0.730 Time of Concentration (Composite) acres291.531Area (User Defined) hours0.097 Computational Time Increment hours12.466Time to Peak (Computed) ft³/s724.71Flow (Peak, Computed) hours0.050Output Increment hours12.500 Time to Flow (Peak Interpolated Output) ft³/s722.08 Flow (Peak Interpolated Output)

Drainage Area

81.000SCS CN (Composite) acres291.531Area (User Defined) in2.3 Maximum Retention (Pervious) in0.5 Maximum Retention (Pervious, 20 percent)

Cumulative Runoff in3.5 Cumulative Runoff Depth (Pervious) ac-ft85.324Runoff Volume (Pervious)

Hydrograph Volume (Area under Hydrograph curve) ac-ft85.079Volume

SCS Unit Hydrograph Parameters hours0.730 Time of Concentration (Composite) hours0.097 Computational Time Increment

483.432 Unit Hydrograph Shape Factor

0.749K Factor

1.670Receding/Rising, Tr/Tp

Page 15 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Storm Event: 25 yearLabel: OverlandFlow

Return Event: 25 yearsSubsection: Unit Hydrograph Summary

SCS Unit Hydrograph Parameters ft³/s452.21Unit peak, qp hours0.487Unit peak time, Tp hours1.948Unit receding limb, Tr hours2.435Total unit time, Tb

Page 16 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Storm Event: 50 yearLabel: OverlandFlow

Return Event: 50 yearsSubsection: Unit Hydrograph Summary

50 yearStorm Event years50Return Event hours24.000Duration in6.6Depth hours0.730 Time of Concentration (Composite) acres291.531Area (User Defined) hours0.097 Computational Time Increment hours12.466Time to Peak (Computed) ft³/s909.69Flow (Peak, Computed) hours0.050Output Increment hours12.500 Time to Flow (Peak Interpolated Output) ft³/s905.09 Flow (Peak Interpolated Output)

Drainage Area

81.000SCS CN (Composite) acres291.531Area (User Defined) in2.3 Maximum Retention (Pervious) in0.5 Maximum Retention (Pervious, 20 percent)

Cumulative Runoff in4.4 Cumulative Runoff Depth (Pervious) ac-ft107.279Runoff Volume (Pervious)

Hydrograph Volume (Area under Hydrograph curve) ac-ft106.983Volume

SCS Unit Hydrograph Parameters hours0.730 Time of Concentration (Composite) hours0.097 Computational Time Increment

483.432 Unit Hydrograph Shape Factor

0.749K Factor

1.670Receding/Rising, Tr/Tp

Page 17 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Storm Event: 50 yearLabel: OverlandFlow

Return Event: 50 yearsSubsection: Unit Hydrograph Summary

SCS Unit Hydrograph Parameters ft³/s452.21Unit peak, qp hours0.487Unit peak time, Tp hours1.948Unit receding limb, Tr hours2.435Total unit time, Tb

Page 18 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Storm Event: 100 yearLabel: OverlandFlow

Return Event: 100 yearsSubsection: Unit Hydrograph Summary

100 yearStorm Event years100Return Event hours24.000Duration in7.7Depth hours0.730 Time of Concentration (Composite) acres291.531Area (User Defined) hours0.097 Computational Time Increment hours12.466Time to Peak (Computed) ft³/s1,114.91Flow (Peak, Computed) hours0.050Output Increment hours12.500 Time to Flow (Peak Interpolated Output) ft³/s1,108.01 Flow (Peak Interpolated Output)

Drainage Area

81.000SCS CN (Composite) acres291.531Area (User Defined) in2.3 Maximum Retention (Pervious) in0.5 Maximum Retention (Pervious, 20 percent)

Cumulative Runoff in5.4 Cumulative Runoff Depth (Pervious) ac-ft131.955Runoff Volume (Pervious)

Hydrograph Volume (Area under Hydrograph curve) ac-ft131.603Volume

SCS Unit Hydrograph Parameters hours0.730 Time of Concentration (Composite) hours0.097 Computational Time Increment

483.432 Unit Hydrograph Shape Factor

0.749K Factor

1.670Receding/Rising, Tr/Tp

Page 19 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Storm Event: 100 yearLabel: OverlandFlow

Return Event: 100 yearsSubsection: Unit Hydrograph Summary

SCS Unit Hydrograph Parameters ft³/s452.21Unit peak, qp hours0.487Unit peak time, Tp hours1.948Unit receding limb, Tr hours2.435Total unit time, Tb

Page 20 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Storm Event: 25 yearLabel: FES-1.2

Return Event: 25 yearsSubsection: Addition Summary

Summary for Hydrograph Addition at 'FES-1.2'

Upstream NodeUpstream Link

Wetland BasinOutlet-2

Node Inflows

Flow (Peak) (ft³/s)

Time to Peak (hours)

Volume (ac-ft)

ElementInflow Type

582.0712.750107.976Outlet-2Flow (From)

582.0712.750107.976FES-1.2Flow (In)

Page 21 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Storm Event: 50 yearLabel: FES-1.2

Return Event: 50 yearsSubsection: Addition Summary

Summary for Hydrograph Addition at 'FES-1.2'

Upstream NodeUpstream Link

Wetland BasinOutlet-2

Node Inflows

Flow (Peak) (ft³/s)

Time to Peak (hours)

Volume (ac-ft)

ElementInflow Type

747.5212.750129.811Outlet-2Flow (From)

747.5212.750129.811FES-1.2Flow (In)

Page 22 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Storm Event: 100 yearLabel: FES-1.2

Return Event: 100 yearsSubsection: Addition Summary

Summary for Hydrograph Addition at 'FES-1.2'

Upstream NodeUpstream Link

Wetland BasinOutlet-2

Node Inflows

Flow (Peak) (ft³/s)

Time to Peak (hours)

Volume (ac-ft)

ElementInflow Type

929.5312.700154.355Outlet-2Flow (From)

929.5312.700154.355FES-1.2Flow (In)

Page 23 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Storm Event: 25 yearLabel: Wetland Basin (OUT)

Return Event: 25 yearsSubsection: Time vs. Elevation

Time vs. Elevation (ft)

Output Time increment = 0.050 hours Time on left represents time for first value in each row.

Elevation (ft)

Time (hours)

1,145.031,145.021,145.011,145.011,145.000.000

1,145.051,145.041,145.041,145.041,145.030.250

1,145.061,145.061,145.061,145.051,145.050.500

1,145.071,145.071,145.071,145.061,145.060.750

1,145.081,145.071,145.071,145.071,145.071.000

1,145.081,145.081,145.081,145.081,145.081.250

1,145.081,145.081,145.081,145.081,145.081.500

1,145.081,145.081,145.081,145.081,145.081.750

1,145.081,145.081,145.081,145.081,145.082.000

1,145.081,145.081,145.081,145.081,145.082.250

1,145.081,145.081,145.081,145.081,145.082.500

1,145.091,145.091,145.091,145.081,145.082.750

1,145.091,145.091,145.091,145.091,145.093.000

1,145.091,145.091,145.091,145.091,145.093.250

1,145.091,145.091,145.091,145.091,145.093.500

1,145.091,145.091,145.091,145.091,145.093.750

1,145.091,145.091,145.091,145.091,145.094.000

1,145.091,145.091,145.091,145.091,145.094.250

1,145.091,145.091,145.091,145.091,145.094.500

1,145.091,145.091,145.091,145.091,145.094.750

1,145.091,145.091,145.091,145.091,145.095.000

1,145.091,145.091,145.091,145.091,145.095.250

1,145.091,145.091,145.091,145.091,145.095.500

1,145.091,145.091,145.091,145.091,145.095.750

1,145.091,145.091,145.091,145.091,145.096.000

1,145.091,145.091,145.091,145.091,145.096.250

1,145.091,145.091,145.091,145.091,145.096.500

1,145.091,145.091,145.091,145.091,145.096.750

1,145.091,145.091,145.091,145.091,145.097.000

1,145.091,145.091,145.091,145.091,145.097.250

1,145.091,145.091,145.091,145.091,145.097.500

1,145.091,145.091,145.091,145.091,145.097.750

1,145.091,145.091,145.091,145.091,145.098.000

1,145.091,145.091,145.091,145.091,145.098.250

1,145.091,145.091,145.091,145.091,145.098.500

1,145.091,145.091,145.091,145.091,145.098.750

1,145.091,145.091,145.091,145.091,145.099.000

1,145.101,145.091,145.091,145.091,145.099.250

1,145.101,145.101,145.101,145.101,145.109.500

1,145.111,145.111,145.111,145.111,145.119.750

Page 24 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Storm Event: 25 yearLabel: Wetland Basin (OUT)

Return Event: 25 yearsSubsection: Time vs. Elevation

Time vs. Elevation (ft)

Output Time increment = 0.050 hours Time on left represents time for first value in each row.

Elevation (ft)

Time (hours)

1,145.131,145.121,145.121,145.121,145.1210.000

1,145.141,145.141,145.131,145.131,145.1310.250

1,145.151,145.151,145.151,145.141,145.1410.500

1,145.171,145.171,145.161,145.161,145.1610.750

1,145.211,145.201,145.201,145.191,145.1811.000

1,145.271,145.261,145.251,145.231,145.2211.250

1,145.361,145.341,145.321,145.301,145.2911.500

1,145.521,145.481,145.441,145.411,145.3811.750

1,145.921,145.801,145.701,145.631,145.5712.000

1,146.611,146.481,146.341,146.191,146.0512.250

1,146.981,146.941,146.891,146.811,146.7212.500

1,146.871,146.921,146.951,146.981,146.9912.750

1,146.591,146.651,146.711,146.761,146.8213.000

1,146.311,146.361,146.421,146.481,146.5413.250

1,146.081,146.121,146.161,146.211,146.2613.500

1,145.901,145.931,145.971,146.011,146.0413.750

1,145.741,145.771,145.801,145.831,145.8614.000

1,145.631,145.651,145.671,145.691,145.7214.250

1,145.561,145.581,145.591,145.601,145.6214.500

1,145.521,145.531,145.541,145.541,145.5514.750

1,145.491,145.501,145.501,145.511,145.5215.000

1,145.461,145.471,145.481,145.481,145.4915.250

1,145.421,145.431,145.441,145.451,145.4515.500

1,145.381,145.391,145.401,145.411,145.4115.750

1,145.351,145.361,145.361,145.371,145.3816.000

1,145.331,145.331,145.341,145.341,145.3516.250

1,145.311,145.311,145.321,145.321,145.3316.500

1,145.301,145.301,145.301,145.311,145.3116.750

1,145.291,145.291,145.291,145.291,145.3017.000

1,145.281,145.281,145.281,145.281,145.2817.250

1,145.271,145.271,145.271,145.271,145.2817.500

1,145.261,145.261,145.271,145.271,145.2717.750

1,145.261,145.261,145.261,145.261,145.2618.000

1,145.251,145.251,145.251,145.261,145.2618.250

1,145.251,145.251,145.251,145.251,145.2518.500

1,145.241,145.241,145.241,145.241,145.2518.750

1,145.241,145.241,145.241,145.241,145.2419.000

1,145.231,145.231,145.231,145.231,145.2319.250

1,145.231,145.231,145.231,145.231,145.2319.500

1,145.221,145.221,145.221,145.221,145.2219.750

1,145.221,145.221,145.221,145.221,145.2220.000

Page 25 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Storm Event: 25 yearLabel: Wetland Basin (OUT)

Return Event: 25 yearsSubsection: Time vs. Elevation

Time vs. Elevation (ft)

Output Time increment = 0.050 hours Time on left represents time for first value in each row.

Elevation (ft)

Time (hours)

1,145.211,145.211,145.211,145.211,145.2120.250

1,145.201,145.211,145.211,145.211,145.2120.500

1,145.201,145.201,145.201,145.201,145.2020.750

1,145.191,145.201,145.201,145.201,145.2021.000

1,145.191,145.191,145.191,145.191,145.1921.250

1,145.181,145.191,145.191,145.191,145.1921.500

1,145.181,145.181,145.181,145.181,145.1821.750

1,145.171,145.181,145.181,145.181,145.1822.000

1,145.171,145.171,145.171,145.171,145.1722.250

1,145.161,145.161,145.171,145.171,145.1722.500

1,145.161,145.161,145.161,145.161,145.1622.750

1,145.151,145.151,145.161,145.161,145.1623.000

1,145.151,145.151,145.151,145.151,145.1523.250

1,145.141,145.141,145.151,145.151,145.1523.500

1,145.141,145.141,145.141,145.141,145.1423.750

(N/A)(N/A)(N/A)(N/A)1,145.1424.000

Page 26 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Storm Event: 50 yearLabel: Wetland Basin (OUT)

Return Event: 50 yearsSubsection: Time vs. Elevation

Time vs. Elevation (ft)

Output Time increment = 0.050 hours Time on left represents time for first value in each row.

Elevation (ft)

Time (hours)

1,145.031,145.021,145.011,145.011,145.000.000

1,145.051,145.041,145.041,145.041,145.030.250

1,145.061,145.061,145.061,145.051,145.050.500

1,145.071,145.071,145.071,145.061,145.060.750

1,145.081,145.071,145.071,145.071,145.071.000

1,145.081,145.081,145.081,145.081,145.081.250

1,145.081,145.081,145.081,145.081,145.081.500

1,145.081,145.081,145.081,145.081,145.081.750

1,145.081,145.081,145.081,145.081,145.082.000

1,145.081,145.081,145.081,145.081,145.082.250

1,145.081,145.081,145.081,145.081,145.082.500

1,145.091,145.091,145.091,145.081,145.082.750

1,145.091,145.091,145.091,145.091,145.093.000

1,145.091,145.091,145.091,145.091,145.093.250

1,145.091,145.091,145.091,145.091,145.093.500

1,145.091,145.091,145.091,145.091,145.093.750

1,145.091,145.091,145.091,145.091,145.094.000

1,145.091,145.091,145.091,145.091,145.094.250

1,145.091,145.091,145.091,145.091,145.094.500

1,145.091,145.091,145.091,145.091,145.094.750

1,145.091,145.091,145.091,145.091,145.095.000

1,145.091,145.091,145.091,145.091,145.095.250

1,145.091,145.091,145.091,145.091,145.095.500

1,145.091,145.091,145.091,145.091,145.095.750

1,145.091,145.091,145.091,145.091,145.096.000

1,145.091,145.091,145.091,145.091,145.096.250

1,145.091,145.091,145.091,145.091,145.096.500

1,145.091,145.091,145.091,145.091,145.096.750

1,145.091,145.091,145.091,145.091,145.097.000

1,145.091,145.091,145.091,145.091,145.097.250

1,145.091,145.091,145.091,145.091,145.097.500

1,145.091,145.091,145.091,145.091,145.097.750

1,145.091,145.091,145.091,145.091,145.098.000

1,145.091,145.091,145.091,145.091,145.098.250

1,145.101,145.091,145.091,145.091,145.098.500

1,145.101,145.101,145.101,145.101,145.108.750

1,145.111,145.101,145.101,145.101,145.109.000

1,145.111,145.111,145.111,145.111,145.119.250

1,145.131,145.121,145.121,145.121,145.129.500

1,145.141,145.141,145.141,145.131,145.139.750

Page 27 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Storm Event: 50 yearLabel: Wetland Basin (OUT)

Return Event: 50 yearsSubsection: Time vs. Elevation

Time vs. Elevation (ft)

Output Time increment = 0.050 hours Time on left represents time for first value in each row.

Elevation (ft)

Time (hours)

1,145.161,145.161,145.151,145.151,145.1510.000

1,145.181,145.181,145.171,145.171,145.1610.250

1,145.201,145.191,145.191,145.191,145.1810.500

1,145.231,145.221,145.211,145.211,145.2010.750

1,145.281,145.271,145.261,145.251,145.2411.000

1,145.361,145.341,145.331,145.311,145.2911.250

1,145.481,145.451,145.431,145.401,145.3811.500

1,145.651,145.611,145.571,145.541,145.5111.750

1,146.121,145.991,145.871,145.781,145.7112.000

1,146.901,146.751,146.591,146.431,146.2712.250

1,147.261,147.241,147.191,147.121,147.0212.500

1,147.121,147.171,147.221,147.251,147.2712.750

1,146.801,146.871,146.941,147.011,147.0613.000

1,146.491,146.551,146.611,146.671,146.7313.250

1,146.221,146.271,146.321,146.371,146.4313.500

1,146.011,146.051,146.091,146.131,146.1713.750

1,145.841,145.871,145.901,145.941,145.9814.000

1,145.711,145.731,145.751,145.781,145.8114.250

1,145.621,145.641,145.651,145.671,145.6914.500

1,145.571,145.581,145.591,145.601,145.6114.750

1,145.541,145.551,145.551,145.561,145.5715.000

1,145.511,145.521,145.521,145.531,145.5415.250

1,145.481,145.481,145.491,145.501,145.5115.500

1,145.441,145.441,145.451,145.461,145.4715.750

1,145.401,145.411,145.411,145.421,145.4316.000

1,145.381,145.381,145.391,145.391,145.4016.250

1,145.361,145.361,145.361,145.371,145.3716.500

1,145.341,145.341,145.351,145.351,145.3516.750

1,145.331,145.331,145.331,145.331,145.3417.000

1,145.321,145.321,145.321,145.321,145.3317.250

1,145.311,145.311,145.311,145.311,145.3217.500

1,145.301,145.301,145.301,145.311,145.3117.750

1,145.291,145.291,145.301,145.301,145.3018.000

1,145.291,145.291,145.291,145.291,145.2918.250

1,145.281,145.281,145.281,145.281,145.2918.500

1,145.271,145.271,145.281,145.281,145.2818.750

1,145.271,145.271,145.271,145.271,145.2719.000

1,145.261,145.261,145.261,145.261,145.2719.250

1,145.251,145.261,145.261,145.261,145.2619.500

1,145.251,145.251,145.251,145.251,145.2519.750

1,145.241,145.241,145.241,145.251,145.2520.000

Page 28 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Storm Event: 50 yearLabel: Wetland Basin (OUT)

Return Event: 50 yearsSubsection: Time vs. Elevation

Time vs. Elevation (ft)

Output Time increment = 0.050 hours Time on left represents time for first value in each row.

Elevation (ft)

Time (hours)

1,145.241,145.241,145.241,145.241,145.2420.250

1,145.231,145.231,145.231,145.231,145.2320.500

1,145.221,145.221,145.231,145.231,145.2320.750

1,145.221,145.221,145.221,145.221,145.2221.000

1,145.211,145.211,145.211,145.211,145.2221.250

1,145.201,145.211,145.211,145.211,145.2121.500

1,145.201,145.201,145.201,145.201,145.2021.750

1,145.191,145.191,145.191,145.201,145.2022.000

1,145.191,145.191,145.191,145.191,145.1922.250

1,145.181,145.181,145.181,145.181,145.1822.500

1,145.171,145.171,145.181,145.181,145.1822.750

1,145.171,145.171,145.171,145.171,145.1723.000

1,145.161,145.161,145.161,145.161,145.1723.250

1,145.151,145.161,145.161,145.161,145.1623.500

1,145.151,145.151,145.151,145.151,145.1523.750

(N/A)(N/A)(N/A)(N/A)1,145.1524.000

Page 29 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Storm Event: 100 yearLabel: Wetland Basin (OUT)

Return Event: 100 yearsSubsection: Time vs. Elevation

Time vs. Elevation (ft)

Output Time increment = 0.050 hours Time on left represents time for first value in each row.

Elevation (ft)

Time (hours)

1,145.031,145.021,145.011,145.011,145.000.000

1,145.051,145.041,145.041,145.041,145.030.250

1,145.061,145.061,145.061,145.051,145.050.500

1,145.071,145.071,145.071,145.061,145.060.750

1,145.081,145.071,145.071,145.071,145.071.000

1,145.081,145.081,145.081,145.081,145.081.250

1,145.081,145.081,145.081,145.081,145.081.500

1,145.081,145.081,145.081,145.081,145.081.750

1,145.081,145.081,145.081,145.081,145.082.000

1,145.081,145.081,145.081,145.081,145.082.250

1,145.081,145.081,145.081,145.081,145.082.500

1,145.091,145.091,145.091,145.081,145.082.750

1,145.091,145.091,145.091,145.091,145.093.000

1,145.091,145.091,145.091,145.091,145.093.250

1,145.091,145.091,145.091,145.091,145.093.500

1,145.091,145.091,145.091,145.091,145.093.750

1,145.091,145.091,145.091,145.091,145.094.000

1,145.091,145.091,145.091,145.091,145.094.250

1,145.091,145.091,145.091,145.091,145.094.500

1,145.091,145.091,145.091,145.091,145.094.750

1,145.091,145.091,145.091,145.091,145.095.000

1,145.091,145.091,145.091,145.091,145.095.250

1,145.091,145.091,145.091,145.091,145.095.500

1,145.091,145.091,145.091,145.091,145.095.750

1,145.091,145.091,145.091,145.091,145.096.000

1,145.091,145.091,145.091,145.091,145.096.250

1,145.091,145.091,145.091,145.091,145.096.500

1,145.091,145.091,145.091,145.091,145.096.750

1,145.091,145.091,145.091,145.091,145.097.000

1,145.091,145.091,145.091,145.091,145.097.250

1,145.091,145.091,145.091,145.091,145.097.500

1,145.091,145.091,145.091,145.091,145.097.750

1,145.101,145.101,145.101,145.101,145.108.000

1,145.111,145.101,145.101,145.101,145.108.250

1,145.111,145.111,145.111,145.111,145.118.500

1,145.121,145.121,145.121,145.121,145.118.750

1,145.131,145.131,145.121,145.121,145.129.000

1,145.141,145.141,145.131,145.131,145.139.250

1,145.161,145.151,145.151,145.151,145.149.500

1,145.181,145.181,145.171,145.171,145.169.750

Page 30 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Storm Event: 100 yearLabel: Wetland Basin (OUT)

Return Event: 100 yearsSubsection: Time vs. Elevation

Time vs. Elevation (ft)

Output Time increment = 0.050 hours Time on left represents time for first value in each row.

Elevation (ft)

Time (hours)

1,145.201,145.201,145.201,145.191,145.1910.000

1,145.231,145.221,145.221,145.211,145.2110.250

1,145.251,145.251,145.241,145.241,145.2310.500

1,145.291,145.281,145.281,145.271,145.2610.750

1,145.361,145.351,145.331,145.321,145.3011.000

1,145.471,145.441,145.421,145.401,145.3811.250

1,145.591,145.571,145.541,145.521,145.4911.500

1,145.791,145.731,145.691,145.651,145.6211.750

1,146.321,146.171,146.051,145.941,145.8612.000

1,147.181,147.031,146.851,146.671,146.5012.250

1,147.551,147.541,147.491,147.411,147.3112.500

1,147.361,147.431,147.481,147.531,147.5512.750

1,147.011,147.081,147.151,147.221,147.2913.000

1,146.651,146.721,146.791,146.861,146.9313.250

1,146.361,146.421,146.481,146.531,146.5913.500

1,146.121,146.161,146.211,146.261,146.3113.750

1,145.931,145.971,146.011,146.041,146.0814.000

1,145.781,145.811,145.841,145.871,145.9014.250

1,145.691,145.701,145.721,145.741,145.7614.500

1,145.631,145.641,145.651,145.661,145.6714.750

1,145.591,145.601,145.601,145.611,145.6215.000

1,145.561,145.561,145.571,145.581,145.5815.250

1,145.521,145.531,145.531,145.541,145.5515.500

1,145.481,145.491,145.501,145.501,145.5115.750

1,145.451,145.461,145.461,145.471,145.4816.000

1,145.421,145.431,145.431,145.441,145.4416.250

1,145.401,145.411,145.411,145.411,145.4216.500

1,145.381,145.391,145.391,145.391,145.4016.750

1,145.371,145.371,145.381,145.381,145.3817.000

1,145.361,145.361,145.361,145.371,145.3717.250

1,145.351,145.351,145.351,145.361,145.3617.500

1,145.341,145.341,145.341,145.351,145.3517.750

1,145.331,145.331,145.341,145.341,145.3418.000

1,145.321,145.331,145.331,145.331,145.3318.250

1,145.321,145.321,145.321,145.321,145.3218.500

1,145.311,145.311,145.311,145.311,145.3118.750

1,145.301,145.301,145.301,145.311,145.3119.000

1,145.291,145.301,145.301,145.301,145.3019.250

1,145.291,145.291,145.291,145.291,145.2919.500

1,145.281,145.281,145.281,145.281,145.2819.750

1,145.271,145.271,145.271,145.281,145.2820.000

Page 31 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Storm Event: 100 yearLabel: Wetland Basin (OUT)

Return Event: 100 yearsSubsection: Time vs. Elevation

Time vs. Elevation (ft)

Output Time increment = 0.050 hours Time on left represents time for first value in each row.

Elevation (ft)

Time (hours)

1,145.261,145.271,145.271,145.271,145.2720.250

1,145.261,145.261,145.261,145.261,145.2620.500

1,145.251,145.251,145.251,145.251,145.2620.750

1,145.241,145.241,145.241,145.251,145.2521.000

1,145.231,145.241,145.241,145.241,145.2421.250

1,145.231,145.231,145.231,145.231,145.2321.500

1,145.221,145.221,145.221,145.221,145.2321.750

1,145.211,145.211,145.221,145.221,145.2222.000

1,145.201,145.211,145.211,145.211,145.2122.250

1,145.201,145.201,145.201,145.201,145.2022.500

1,145.191,145.191,145.191,145.191,145.2022.750

1,145.181,145.181,145.191,145.191,145.1923.000

1,145.181,145.181,145.181,145.181,145.1823.250

1,145.171,145.171,145.171,145.171,145.1723.500

1,145.161,145.161,145.161,145.161,145.1723.750

(N/A)(N/A)(N/A)(N/A)1,145.1624.000

Page 32 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Storm Event: 25 yearLabel: Wetland Basin

Return Event: 25 yearsSubsection: Time vs. Volume

Time vs. Volume (ac-ft)

Output Time increment = 0.050 hours Time on left represents time for first value in each row.

Volume (ac-ft)

Time (hours)

7.5587.5257.4887.4487.4040.000

7.6907.6687.6447.6187.5890.250

7.7767.7617.7467.7297.7100.500

7.8317.8227.8127.8017.7890.750

7.8677.8617.8547.8477.8391.000

7.8907.8867.8827.8777.8721.250

7.9057.9027.9007.8977.8931.500

7.9147.9137.9117.9097.9071.750

7.9217.9207.9187.9177.9162.000

7.9257.9247.9237.9227.9222.250

7.9277.9277.9267.9267.9252.500

7.9297.9297.9287.9287.9282.750

7.9307.9307.9307.9297.9293.000

7.9317.9317.9307.9307.9303.250

7.9317.9317.9317.9317.9313.500

7.9317.9317.9317.9317.9313.750

7.9327.9327.9327.9317.9314.000

7.9327.9327.9327.9327.9324.250

7.9327.9327.9327.9327.9324.500

7.9327.9327.9327.9327.9324.750

7.9327.9327.9327.9327.9325.000

7.9327.9327.9327.9327.9325.250

7.9327.9327.9327.9327.9325.500

7.9327.9327.9327.9327.9325.750

7.9327.9327.9327.9327.9326.000

7.9327.9327.9327.9327.9326.250

7.9327.9327.9327.9327.9326.500

7.9327.9327.9327.9327.9326.750

7.9327.9327.9327.9327.9327.000

7.9327.9327.9327.9327.9327.250

7.9327.9327.9327.9327.9327.500

7.9327.9327.9327.9327.9327.750

7.9327.9327.9327.9327.9328.000

7.9337.9337.9327.9327.9328.250

7.9387.9377.9357.9347.9348.500

7.9497.9467.9447.9427.9408.750

7.9677.9627.9587.9557.9529.000

7.9967.9897.9827.9777.9719.250

8.0458.0338.0238.0138.0059.500

8.1088.0958.0818.0688.0569.750

Page 33 of 5227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

5/18/2023

PondPack CONNECT Edition [10.02.00.01]

Storm Event: 25 yearLabel: Wetland Basin

Return Event: 25 yearsSubsection: Time vs. Volume

Time vs. Volume (ac-ft)

Output Time increment = 0.050 hours Time on left represents time for first value in each row.

Volume (ac-ft)

Time (hours)

8.1838.1678.1528.1378.12210.000

8.2668.2498.2328.2158.19910.250

8.3598.3398.3208.3018.28310.500

8.4988.4648.4338.4068.38110.750

8.7468.6858.6318.5818.53711.000

9.1429.0508.9648.8858.81311.250

9.7309.5899.4639.3489.24111.500

10.85610.55510.29010.0729.88811.750

13.91612.96612.22011.64511.20212.000

20.20218.96217.53916.20615.01912.250

24.14723.78323.18022.35721.34712.500

22.98023.48723.90024.17524.26912.750

20.02520.60921.21021.81622.41313.000

17.28617.79018.33118.91119.46813.250

15.27115.61515.98616.38616.81813.500

13.73514.02914.33914.65414.95213.750

12.51512.72612.95313.19713.45814.000

11.68711.82411.97512.14012.32014.250

11.17211.25511.34711.44911.56214.500

10.86510.91510.96911.03011.09714.750

10.66810.70810.74310.78010.82115.000

10.44010.49110.53810.58410.62715.250

10.16310.22010.27710.33310.38715.500

9.8989.9479.99810.05210.10715.750

9.6839.7229.7629.8059.85016.000

9.5209.5499.5809.6129.64716.250

9.3989.4209.4439.4679.49316.500

9.3059.3229.3399.3589.37716.750

9.2329.2459.2599.2749.28917.000

9.1739.1849.1959.2079.21917.250

9.1239.1339.1429.1529.16317.500

9.0799.0889.0969.1059.11417.750

9.0399.0479.0559.0639.07118.000

9.0029.0099.0179.0249.03218.250

8.9658.9738.9808.9878.99418.500

8.9308.9378.9448.9518.95818.750

8.8968.9038.9108.9168.92319.000

8.8628.8688.8758.8828.88919.250

8.8288.8358.8418.8488.85519.500

8.7948.8018.8088.8148.82119.750

8.7618.7678.7748.7818.78720.000

Page 34 of…

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File details come from the government source that posted it. Updated Aug 2, 2024.