Stormwater Management for Homeowners. Where does water go?

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Presentation transcript:

Stormwater Management for Homeowners

Where does water go?

Water infiltration

What’s in a watershed?

Many watersheds now…

North Carolina is rainy!

Surface Runoff

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

Common runoff pollutants

Effects of Water Pollution

Photo courtesy of NRCS

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

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

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

Bioretention

NCSU-led Study in Greensboro

Annual Pollutant Loadings Greensboro Cell G2

Chapel Hill Cell, C1 NCSU-led Study

Annual Pollutant Loadings Chapel Hill Cell C1

Soil Stabilization Cover disturbed soil to reduce erosion Turf Mats

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

Rainwater Harvesting

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

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