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North Haven

Project Team

Date: Summer 2018
UConn Students: Emma Saavedra, James Sheridan, Katherine Nee, and RosaLinda Sibilio
UConn CLEAR: Mike Dietz, David Dickson, Chester Arnold, and Amanda Ryan
Town of North Haven: Lynn Sadosky, Jonathan Bodwell, Alan Fredricksen, and Laura Magaraci

GSI Installation

Rain Garden

Project Location: Green Acres Elementary School
Project Construction: A rain garden will be implemented in the western open section of the elementary school to catch stormwater from the adjacent roofs. A second rain garden will be implemented in the southern most parking lot to collect stormwater runoff from the pavement.

The Runoff Reduction Report

This report includes recommendations for green stormwater infrastructure practices at 8 sites in the town of North Haven. 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.

Photo Gallery

North Haven Project location

Site Design

Plans

Rain Garden at Green Acres Elementary School

Project designs were created by the Rutgers University Water Resources Program.

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 Quinnipiac University Student Parking Lot South Rain Garden 12,240 311,329 2.118 0.150 2,040
2 Aces Village School Rain Garden 1 8,389 213,366 1.45 0.103 1,398
Rain Garden 2 411 11,221 0.076 0.005 74
Rain Garden 3 3,170 80,619 0.54 0.04 528
Rain Garden 4 1,572 39,981 0.27 0.019 270
Rain Barrel 91 2,723 0.0157 0.001 55
3 Gateway Community College and Cortland V.R. Creed High School Permeable Pavement 52,060 1,323,990 (if the whole area was permeable pavement) 10.60 0.752 9,287 (3 rows of permeable pavement)
Tree Box Filters 3,656 92,979 0.63 0.045 2 Tree Box Filters
Permeable Pavement 37,283 948,186 (if whole area was permeable pavement) 8.25 0.585 10,432 (4 rows of permeable pavement)
4 Clintonville Elementary School Rain Garden 1 3,403 86,545 0.589 0.042 570
Rain Garden 2 6,244 158,797 1.08 0.077 1,041
Rain Garden 3 4,231 107,603 0.732 0.052 705
5 North Haven Housing Authority / Senior Center Rain Garden 1,220 31,027 0.211 0.015 203
Rain Barrel or Cistern 400 for each downspout drainage area 10,173 for each downspout drainage area 0.069 0.005 67
6 Aces Mill Road School Rain Garden 10,422 265,052 1.80 0.128 1,737
7 Green Acres Elementary School Rain Garden 1 1,245 31,662 0.22 0.15 208
Rain Garden 2 2,682 68,208 0.46 0.33 447
Rain Garden 3 6,204 157,780 1.07 0.76 1,034
Rain Garden 4 28,149 715,888 4.87 3.45 4,692
Rain Garden 5 12,999 330,590 2.56 1.59 2,167
8 North Haven High School & Middle School Rain Garden 1 3,964 100,826 0.686 0.049 661
Rain Garden 2 9,975 253,718 1.726 0.122 1,663
Rain Garden 3 915 23,273 0.158 0.011 153
Rain Garden 4 7,144 181,710 1.236 0.088 1,191
Rain Garden 5 26,354 670,325 4.559 0.323 4,392
Rain Garden 6 2,265 57,611 0.392 0.028 378
9 Recreational Center and Walter Gawrych Community Pool Rain Garden 1 16,378 416,581 2.834 0.201 2,730
Rain Garden 2 1,611 40,976 0.278 0.020 277

Totals

Total IC Disconnected (sq. ft.) Annual Gallons Treated Annual Nitrogen Reduction (lb. N/yr) Annual Phosphorous Reduction (lb. P/yr)
Total 259,107 6,732,739 49.48 9.14