Bioretention Systems Collect & Filter Stormwater Runoff
View the signage placed at the reservoirs.
How Do They Work?
Illustrated below, bioretention systems treat stormwater naturally by collecting runoff, allowing it to absorb into the ground at a slower rate, and reducing peak runoff volumes.
Specialized native plants take in excess nutrients and filter out suspended sediments, improving the quality of surface water entering the reservoir (or other bodies of water).
You Can Help Protect Stormwater
- Minimize use of hard & paved surfaces
- Use rain barrels, rain gardens & bioswales to capture the flow
- Maintain healthy vegetated buffers around waterways
- Keep oil, dirt, detergents, lawn chemical
- Visit 'Keep it Clean' or We All Live Downstream to learn more
A 3/4" rainfall in this 120 acre area near Griggs Reservoir (map) can amount to 1.22 million gallons of stormwater.
The stormwater flowing from the surrounding neighborhood enters the bioretention basins through an outflow pipe (photo).
It then drains into 4 bioretention basins illustrated below.
For a more detailed view and additional illustrations, view the Bioretention systems signage.