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Watershed Management & Low Impact Development for Litchfield Board of Realtors Green Committee DEP / Watershed, Lakes and NPS Programs MaryAnn Nusom Haverstock.

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Presentation on theme: "Watershed Management & Low Impact Development for Litchfield Board of Realtors Green Committee DEP / Watershed, Lakes and NPS Programs MaryAnn Nusom Haverstock."— Presentation transcript:

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2 Watershed Management & Low Impact Development for Litchfield Board of Realtors Green Committee DEP / Watershed, Lakes and NPS Programs MaryAnn Nusom Haverstock Thursday, May 7, 2009

3 Watershed Management and Low Impact Development Watersheds, Lakes and Nonpoint Source Implementation Low Impact Development Lakes Management Nonpoint Source Implementation -319 nonpoint source program Watershed Management

4 LOW IMPACT DEVELOPMENT LID is a site design strategy intended to maintain or replicate predevelopment hydrology through the use of small-scale controls integrated throughout the site to manage runoff as close to its source as possible. (2004 CT-DEP Stormwater Quality Manual)

5 Low Impact Development (LID) LID can be incorporated into many residential and municipal areas to assist in environmental and engineering benefits. –Parking –Landscaping –Residential and Municipal Site planning –Municipal road design

6 How to I.D. your L.I.D. LID design strategies can include: –Residential rain gardens – Shared driveways –Alternative pavement surface including permeable pavers –Zero lot line setback –Reduced front setback –Stormwater disconnects –Reduction in road width –Elimination of curb and gutter –One-way cul-de-sac –Depressed island (bioretention) in cul-de-sac –Swales in right of way –Elimination of sidewalks

7 Watersheds in Connecticut

8 Jordan Cove Urban Watershed Sec. 319 National Monitoring Program

9 Treatment Watersheds

10 Best Management Practices (BMPs) Grassed Swale Rain garden Permeable pavers Bioretention cul-de-sac

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12 Jordan Cove Recommendations Planning and Post-construction Cluster design – reduces imperviousness LID ordinance – needed because of waivers Stormwater disconnects (reducing effective imperviousness of the site/subdivision) Education – social scientist addition to team Bioretention maintenance Paver maintenance Turf dam (build up along paver road edges) Fire hydrant (maintenance cleaning caused paver road washout problems) Seed mix (low nutrient input varieties)

13 Jordan Cove Project Funded in part by the CT DEP through a US EPA nonpoint source grant under § 319 Clean Water Act For more information, visit

14 Rain Gardens Coventry Town Hall Annex Building – Coventry, CT Photo: TRBP

15 Rain Gardens Jordan Cove Urban Watershed Project – Waterford, CT Photo: CT DEP

16 Rain Gardens UConn Storrs Campus – Mansfield, CT Photo: CT DEP

17 Bioretention Areas Evergreen Walk Mall Parking Lot – South Windsor, CT Photo: CT NEMO

18 Bioretention Areas Jordan Cove Urban Watershed Project – Waterford, CT Photo: CT DEP

19 Permeable Block Pavers Hole in the Wall Parking Lot – East Lyme, CT Photo: CT DEP

20 Permeable Block Pavers Hole in the Wall Parking Lot – East Lyme, CT Photo: CT DEP

21 Permeable Block Pavers Hole in the Wall Parking Lot – East Lyme, CT Photo: CT DEP

22 Permeable Concrete Block Pavers Hole in the Wall Parking Lot – East Lyme, CT Photo: CT DEP

23 Plastic Grid Pavers West Farms Mall Overflow Parking Lot – Farmington, CT Photo: CT NEMO

24 Green Roofs Middlesex Extension Center Demonstration – Haddam, CT Photo: CT DEP

25 Green Roofs Centerbrook Architects Building – Essex, CT Photo: CT NEMO

26 Rain Barrels Middlesex Extension Center Demonstration – Haddam, CT Photo: CT DEP

27 Watershed Management List of Contacts Program Oversight - MaryAnn Nusom Haverstock – Watershed Managers –Eric Thomas –Susan Peterson – –Chris Malik – Low Impact Development Coordinator –Jessica Morgan – Nonpoint Source Implementation –Stan Zaremba – Lakes Management –Chuck Lee –


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