Sentences with phrase «stormwater runoff through»

For example, the study found that in order to maximize water quality in the Dominguez Channel watershed, which spans 133 square miles in southern Los Angeles County, the city would need to install 65,000 bioretention basins — landscaped depressions or shallow basins used to slow and treat on - site stormwater runoff through physical, chemical and biological processes.

Not exact matches

Actions to reduce stormwater runoff in ways that allow water to infiltrate and move more slowly through the ground can also ease flooding and peak flows that otherwise threaten salmon redds.

Instead of rushing through a pipe, stormwater winds slowly through the channel, which is planted with native plants that filter and process sediments, pollutants and nutrients such as nitrates — which can cause toxic algae blooms — before the runoff reaches Lake Washington.

In undisturbed landscapes, such as woods and open field, there is very little stormwater runoff because rainwater filters through soil or evaporates into the atmosphere.