Clinton

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 Branford. 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 Clinton Parks and Rec Bioretention 101,880 2,682,818 27.86 3.54 2,830 (3' depth)
Permeable Pavement 9,148 273,745 2.50 0.32 2,400
Rain Garden 10,236 269,546 2.80 0.36 1,280
Tree Box Filter 10,541 277,577 2.88 0.37 N/A
2 Clinton Town Hall East Building Rain Garden 3,485 91,766 0.95 0.12 578
3 Clinton Town Marina Combined Rain Garden and Tree Box Filter 39,901 1,050,717 10.91 1.38 480
4 Lewin G. Joel School Rain Garden 1 4,400 115,850 1.20 0.15 548
Rain Garden 2 2,200 57,925 0.60 0.08 1,067
Rain Garden 3 5,400 142,179 1.48 0.19 1,615
Rain Garden 4 8,500 223,801 2.32 0.29 840
Rain Garden 5 5,052 672,877 6.98 0.89 840
5 Hull Library Rain Garden 13,068 344,075 3.57 0.45 1,084

Totals

Total IC Disconnected (sq. ft.) Annual Gallons Treated Annual Nitrogen Reduction (lb. N/yr) Annual Phosphorous Reduction (lb. P/yr)
Total 213,811 6,202,876 63.96 8.14