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Stormwater Management For Developing Municipalities What Residents Can Do What Towns Can Do.

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Presentation on theme: "Stormwater Management For Developing Municipalities What Residents Can Do What Towns Can Do."— Presentation transcript:

1 Stormwater Management For Developing Municipalities What Residents Can Do What Towns Can Do

2 ACKNOWLEDGEMENTS CENTER FOR WATERSHED PROTECTION, Tom Schueler, Director of Watershed Research and Practice at CWP NEMO PROGRAM - University of Connecticut,

3 Development Means Less Infiltration

4 Nutrients Pathogens Sediment Toxic Contaminants Debris Thermal Stress

5 Waterway Health & Imperviousness ADAPTED FROM SCHUELER, ET. AL., STREAM DEGRADATION WATERSHED IMPERVIOUSNESS (%) DEGRADED PROTECTED IMPACTED Waterway Health Declines Imperviousness Increases

6 MUNICIPAL ACTION Public Works –Streets –Playing Fields and parks –Stormwater sewer system New Development –Planning –Zoning –Maintenance

7 Culvert and Outfall Opportunity for Retrofit Scenario for erosion

8 STORMWATER MANAGEMENT ORDINANCE For New Development

9 Groundwater Recharge Requirement Maintain Existing (100%) Average Annual Groundwater Recharge post development OR Infiltrate the Post Development Increase in the 2-year Storm

10 Nonstructural SWM Strategies Protect areas that provide water quality benefits Minimize & Separate Impervious Cover Maximize protection of natural drainage features and vegetation Minimize Disturbance Minimize Reduction in Time of Concentration Minimize soil compaction (should be in municipal ordinance)

11 Provide Low-maintenance Landscaping and use of native vegetation Provide Opportunities for Reduction of Pollutants at the Source – Trash Racks and Receptacles – Minimize Vegetation That Needs Fertilizers – Use Native Plants Manage stormwater runoff at source

12 LAND USE ORDINANCES ESTABLISH DESIGN STANDARDS


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