Mapleview Street Biofiltration and
Channel Restoration Project
Water Quality Improvement Project | Completed Spring 2024

Located along Mapleview Street, this project cleans stormwater runoff and improves walkability in the Lakeside Community.
Before This Project
- Runoff from the street carried pollution into nearby waterways, contributing to water quality issues in the San Diego River.
- A sidewalk gap along Mapleview Street limited pedestrian
safety and walkability.
After This Project
- Planted dispersion and biofiltration basins (rain gardens) filter pollutants from runoff, helping keep waterways clean.
- A new sidewalk improves safety and makes it easier to walk
along Mapleview Street.
Project Details
This project is located in the San Diego River Watershed.
The San Diego River Watershed is affected by bacteria. Learn more on Project Clean Water.
Cleaner waterways & healthier communities
Native plants and soil clean stormwater by filtering out pollutants. The benefits reach all the way to the Pacific Ocean!
Sidewalk additions
2,500 feet of new sidewalk improves safety and mobility by closing gaps and adding planted buffers that separate pedestrians from traffic.
Drainage upgrades
550 feet of storm drain and channel upgrades minimize flood risk.
Project Photos
A planted dispersion area along Mapleview Street.
Water runoff is filtered through soil, rock, and plant media within the planted dispersion areas.
New sidewalk and dispersion areas along Mapleview Street.
A new biofiltration basin along Mapleview Street.
Watch the video to learn more!
This project has won multiple awards, including:
- 2024 CMAA Public Achuevement Award for Projects less than $15 million
- 2024 ASCE San Diego Sector Outstanding Sustainable Engineering Project
- 2024 APWA San Diego & Imperial Counties Chapter Project of the Year in the Sustainable Category
- 2024 APWA San Diego & Imperial Counties Chapter Gala Recognition
- 2024 CASQA Outstanding BMP Implementation Project
Upcoming Events:
This project is complete and has no upcoming events.
Learn More:
View our full list of Green Infrastructure Projects
Return to the Watershed Protection Homepage
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The County of San Diego is proud to implement projects like this to improve water quality, support sustainability, and enhance our local communities.




