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Manage Stormwater Runoff

You can help manage stormwater runoff at home, school or work. Rain barrels and rain gardens are just the beginning!

Photo Credit: Sarah Bouboulis of PDE

Stormwater Management

storm drain

Photo courtesy U.S. Geological Survey

What is Stormwater?

Stormwater, or polluted runoff, is one of the fastest-growing sources of pollution. Rivers depend on the land around them (called the “watershed”) for clean water. In natural areas like forests and meadows, the water soaks into the ground, or it flows into the river. But roof tops, streets, sidewalks, and parking lots (or “impervious surfaces”) change the way that the water flows into the ground and to the river.

But rainfall can’t soak through these impervious surfaces into the groundwater. Instead, the polluted water flows into the storm drains and then into our rivers. Water also flows more quickly over concrete and other hard surfaces than it does over soil. That can increase the severity and frequency of flooding and soil eroding from river banks.

Group planting a rain garden

Installation of a rain garden

When rain or melted snow runs off these surfaces, it picks up oil and other pollutants. This polluted runoff also flows more quickly over impervious surfaces than it does over soil. That, in turn, can increase the severity and frequency of flooding and soil eroding from river banks.

Properly managed, stormwater can be a valuable resource. When it is not, it can create problems. Rain gardens and rain barrels are two ways you can address stormwater.

Keeping the water cleaner by picking up trash and dog waste, and properly disposing of engine oil also helps by keeping the water cleaner.

Want to make a difference?

To learn more about what you can do, check out our resources below on actions you can take, or download one of the how-to guides below (PDF files).  Each contains a variety of ways to capture or divert runoff — before its gets polluted (or floods your basement).

Stormwater art contest

2018 Philadelphia stormwater art contest

    • Homeowners
      • Homeowner’s Stormwater Handbook
      • Rain Gardens: Gardens With Benefits
  • Teachers and school administrators
    • A Guide to Stormwater Management on School Campuses
    • Wilmington, DE, and Philadephia, PA teachers, your class can participate in our stormwater art competition and win prizes!
  • Commercial property owners in:
    • Philadelphia: Green Guide for Property Management
    • Elsewhere: Green Guide for Property Management
  • Farmers
    • A Farmer's Guide for Healthy Communities: Working Together for Fresh Food, Clean Water & A Strong Future

Video Credit: GreenTreks Network

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Partnership for the Delaware Estuary
110 South Poplar Street, Suite 202
Wilmington, DE 19801
800-445-4935 or 302-655-4990

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