Stormwater Management for Homeowners - PowerPoint PPT Presentation

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Stormwater Management for Homeowners

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  1. Stormwater Management for Homeowners

  2. Where does water go?

  3. Water infiltration

  4. What’s in a watershed?

  5. Many watersheds now…

  6. North Carolina is rainy!

  7. Surface Runoff

  8. Surface Runoff

  9. Surface runoff • Picks up pollutants • Often flows right into streams • Increases flooding and erosion

  10. Common runoff pollutants

  11. Common runoff pollutants

  12. Common runoff pollutants

  13. Effects of Water Pollution

  14. Effects of Water Pollution Photo courtesy of NRCS

  15. In NC, approximately 5000 stream miles (16%) are impaired by sediment, pathogens, low DO, nutrients, & habitat degradation

  16. What can you do? • Slow water en route to streams to reduce flooding • Clean water en route to streams to reduce pollution But how?

  17. With a rain garden! • Create and plant a shallow depression • Restore infiltration

  18. Bioretention

  19. NCSU-led Study in Greensboro 2002-2004

  20. Annual Pollutant Loadings Greensboro Cell G2

  21. Chapel Hill Cell, C1 NCSU-led Study 2002-2003

  22. Annual Pollutant Loadings Chapel Hill Cell C1

  23. Soil Stabilization • Cover disturbed soil to reduce erosion • Turf Mats

  24. Permeable Pavement • Allows for rainfall infiltration • Low traffic surfaces (driveways, parking lots, walk ways) • Used along coastal regions in areas of sandy soil

  25. Rainwater Harvesting

  26. Rain garden principles • Place between stormwater source and destination (between house and stream, low spots in yard, or street) • Soil and plants filter pollutant from water • Infiltration slows water to decrease flooding

  27. Rain garden benefits • Restore infiltration • Provide wildlife habitat • Add beauty (and value) to your property