LA BIOSWALES These diagrams and images document the bioswale system proposed for Lincoln Avenue. CSO events occur when there is a lot of water entering the sewer system at once. This happens particularly rapidly during the first 20 minutes of a rain storm. Bioswales collect and hold rainwater that otherwise would enter the sewer system.
The water held there evaporates slowly over time without ever entering the sewers. In severe storms the bioswales may be overwhelmed and in those cases water flows back into the street and into the drains. Even still, the water is detained for a short time reducing the impact of the CSO event by a small amount.
1. runoff water runs down the curb 2. water enters swale at inlet 3. swale fills to capacity 4. excess water exits at outlet 5. runoff water fills next swale, process repeats 6. reduced water volume enters sewer system
BIOSWALES
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MURAL BLOCKS EMPTY LOT