soak up the rain NEW HAMPSHIRE Jillian McCarthy NH Dept. of Environmental Services

Transcription

1 soak up the rain NEW HAMPSHIRE Jillian McCarthy NH Dept. of Environmental Services

2 What is stormwater? Stormwater is water from rain or melting snow that doesn t soak into the ground.

3 50% 10% Stormwater in an undeveloped area.

4 15% 55% Stormwater in a highly developed area.

5 Stormwater often flows untreated into nearby surface waters.

6 Too Much Stormwater

7 Effects of too much Stormwater

8 Polluted Stormwater

9 Pollutants of Concern

10 Effects of Polluted Stormwater Stormwater causes or contributes to over 80% of the water pollution problems in NH. Where does all this stormwater come from?

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13 Quick Quiz Please check yes or no to answer the following questions. Y N Does your home have a roof? Do you use a driveway to access your home? Do you have a lawn? Do you drive on public roads? If you answered yes to any of the above questions YOU ARE PART OF THE STORMWATER PROBLEM!

14 A Closer Look roof runoff improper gutters compacted soils pet waste fertilizer and pest control driveway runoff erosion and gully formation

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16 Do It It Yourself Stormwater Treatment Dripline infiltration trench Driveway infiltration trench Dry well Infiltration steps Pervious walkway & patio Rain barrel Rain garden Vegetated swale Water bar

17 DIY Fact Sheets

18 Dripline Infiltration Trench A stone filled trench around the perimeter of your house. Catches and stores runoff from roof edges before soaking into the ground.

19 Driveway Infiltration Trench A stone filled trench along the perimeter of your driveway. Catches and stores runoff before soaking into the ground.

20 Dry Well A hole in the ground filled with stone. Catches and stores runoff before soaking into the ground.

21 Infiltration Steps Stabilize paths and help water infiltrate instead of causing slope erosion.

22 Pervious Walkways & Patios Stone reservoirs under the walkway collect and infiltrate rain and snow.

23 Rain Barrel A container that captures and stores rainwater from your roof for later use.

24 Rain Garden A bowl shaped garden that uses vegetation and soils to capture absorb and treat stormwater.

25 Vegetated Swale A vegetated channel that collects and directs stormwater to an area where it can soak into the ground.

26 Water Bar Intercepts water traveling down paths and diverts it to a stable area to prevent erosion.

27 A Program is Born NH Homeowner s Guide to to Stormwater Management Homeowner Projects soak up the rain NH so ak up the rain NEW HAMPSHIRE Regional Planning Projects Watershed Organization Projects

28 soak up the rain NEW HAMPSHIRE To achieve voluntary reductions in stormwater runoff and pollution from private properties. To restore and protect water quality and clean, healthy water.

29 SutR Program Unified Messaging and Outreach Easily recognizable logo Materials and resource templates for local groups to personalize Targeted to private property owners

30 SutR Program Website Will house materials Will provide example bmp installations & training videos Will track bmp installations and associated pollutant removals TSS TP TN

31 SutR Program Assistance and Hands on Training Assistance to get your local program up and running Training sessions to teach how to: Assess properties Design best management practices Install best management practices 1. 2.

32 How it works NH DES s o a k u p t h e r a i n NEW HAMPSHIRE Local Organization Crew Leaders Crew Members soak up the rain Great Bay soak up the rain YOUR LOCAL GROUP soak up the rain Waukewan Home Owners

33 Roles and Responsibilities NHDES SutR Program Materials, Resources, Technical Assistance Trainings (site selection, assessment, design, installations), website (calendar, BMP tracking) Financial assistance for start up materials and/or other costs

34 Roles and Responsibilities Local Organization Manages the local program Recruits Crew Leaders and work Crew Members Manages local outreach to recruit Homeowner sites Attends training workshops (hosted by DES) Works with Crew Leaders to coordinate sites assessments, designs, and installations. Healthy Water Lake Association Happy People Watershed Association

35 Roles and Responsibilities Homeowners Provide the sites Cost share Agree to maintain very similar to typical gardening Water Weed Refresh Mulch Replace Plants

36 Start of a movement? Vision: Managing stormwater is a common part of homeownership. It is as common as recycling.

37 Example

38 Site Assessment

39 Site Assessment

40 Site Planning

41 Estimate the water quality benefit NH Residential Loading Model To estimate the stormwater impact of a properties on nearby surface waters i.e. their stormwater footprint. Runoff volume, sediment, phosphorus, nitrogen To estimate the benefit of stormwater BMP implementation.

42 Project Planning Worksheet

43 Results of our plan Pollutant Existing lbs/year Planned lbs/year Difference % Reduction Runoff Volume (ft3/year) 32,709 14,898 17,811 54% Total Suspended Solids % Total Phosphorus % Total Nitrogen % Bonus! No more erosion from the roof No more driveway/lawn erosion

44 Just Imagine the cumulative benefit! Pollutant Reduction from 1 house Reduction from 500 houses Reduction from 1000 houses Runoff Volume (ft3/year) 17,811 8,905,500 17,811,000 Total Suspended Solids (lbs/year) ,875 91,750 Total Phosphorus (lbs/year) Total Nitrogen (lbs/year)

45 How do you fit in? Soak up the Rain Great Bay Soak up the Rain Baboosic Lake Soak up the Rain Lake Waukewan Soak up the Rain [your watershed here]

46 Questions? Jillian McCarthy NH Dept. of Environmental Services