Project Team
Date: Summer 2021
UConn Students: Ben Zaccara, Fiona Casey, Rachael Ruggiero
UConn CLEAR: David Dickson, Michael Dietz, Chet Arnold and Josh Snarski
The Runoff Reduction Report
This report includes recommendations for green stormwater infrastructure practices at 5 sites in the town of Madison. Each site is displayed with an ArcGIS map of the recommended practice, detailed description of our recommendations, and an informational table. Each table shows an estimated drainage area, our recommended green infrastructure, annual gallons of runoff treated, nitrogen and phosphorus pollution reduction amounts, and the suggested size of each practice. These estimations were calculated based on the drainage area, annual rainfall estimates specific to Connecticut, and literature export values.
GSI Summary Table
The following calculations display the potential pollutant-reducing benefits if the practices identified within the report were implemented:
| Site | Location | GSI Suggestion | Drainage Area (sq. ft.) | Annual Gallons Treated | Annual Nitrogen Reduction (lb. N/yr) | Annual Phosphorous Reduction (lb. P/yr) | Suggested Practice Size [6 in. depth] (sq. ft.) |
|---|---|---|---|---|---|---|---|
| 1 | Walter C. Polson Middle School | Rain Garden 1 | 25,482 | 670,930 | 6.97 | 0.88 | 1,717 |
| Rain Garden 2 | 16,378 | 431,227 | 4.48 | 0.56 | 1,355 | ||
| Rain Garden 3 | 10,890 | 286,730 | 2.98 | 0.38 | 900 | ||
| 2 | Surf Club Park | Rain Garden | 11,543 | 152,560 | 1.58 | 0.20 | 1,351 |
| Tree Box Filter 1 | 4,051 | 106,678 | 1.12 | 0.14 | N/A | ||
| Tree Box Filter 2 | 2,439 | 64,236 | 0.67 | 0.08 | N/A | ||
| 3 | Madison Senior Center | Rain Garden 1 | 13,982 | 368,210 | 3.82 | 0.49 | 1,548 |
| Rain Garden 2 | 1,742 | 45,888 | 0.48 | 0.06 | 289 | ||
| 4 | Ryerson Elementary | Rain Garden | 7,971 | 209,847 | 2.18 | 0.28 | 662 |
| 5 | Dept. Public Works Garage | Rain Garden | 18,164 | 478,315 | 4.97 | 0.63 | 2,270 |
Totals
| Total IC Disconnected (sq. ft.) | Annual Gallons Treated | Annual Nitrogen Reduction (lb. N/yr) | Annual Phosphorous Reduction (lb. P/yr) | |
|---|---|---|---|---|
| Total | 113,101 | 2,814,616 | 29.24 | 3.70 |
Report
Site Design
Rain Garden at Senior Center
Project designs were created by the University of Connecticut.
