South Mission Beach Storm Drain Replacement & Green Infrastructure

Background

South Mission Beach is located within the larger community of Mission Beach, which is situated along the Pacific Ocean between Grand Avenue and the Mission Bay Jetty. The existing storm drain infrastructure within South Mission Beach dates to the 1940s in some areas and is inadequately sized or lacking in main locations. This has resulted in regular flooding throughout the developed areas and exposure of the storm drain outfalls within the beach areas of Mariners Basin.

Project Overview

Anticipated work will include, but is not limited to:

Replacing or upgrading existing drainage systems to meet current drainage design requirements and reduce flooding.
Installing a new storm drain backbone and inlets along Mission Boulevard, water quality basins at the northern and southern ends of the project to treat existing parking lot areas, and low-flow diversion systems to divert portions of the runoff to the existing sewer within the developed areas.
Grinding and overlaying Mission Boulevard to provide additional runoff capacity within the street and reduce flooding of developed properties.
Completing shoreline restoration and eelgrass planting.

Anticipated Schedule & Projected Budget

An anticipated schedule and projected budget for these bundled projects are available on the designated CIP project look up pages (South Mission Beach Storm Drain Replacement and South Mission Beach Storm Green Infrastructure). Addtional details can be found below.

Anticipated work September 2025 – May 2026:

South Mission Beach Storm Drain Replacement (System 1 and System 9): Storm drain installation along San Fernando Place and Mission Boulevard, low-flow diversion structure replacement and new meter pedestal, outfall grading, and eel grass mitigation.
South Mission Beach Green Infrastructure: Installation of Water Quality Basins, including landscaping and irrigation.

Anticipated work September 2026 – May 2027:

South Mission Beach Storm Drain Replacement (System 2 and System 3): Storm drain installation along Mission Boulevard and Capistrano Place, storm drain abandonment along existing outfalls, low-flow diversion structure replacement and new meter pedestal, outfall grading, and eelgrass mitigation.

Anticipated work September 2027 – May 2028:

South Mission Beach Storm Drain Replacement (System 5): Storm drain installation along Mission Boulevard, San Gabriel Place, Balboa Court, Cohasset Court, and along the shoreline, storm drain abandonment along Deal Court, low-flow diversion structure and meter pedestal installation along Bayside Lane, outfall grading, and eelgrass mitigation.

Anticipated work September 2028 – May 2029:

South Mission Beach Storm Drain Replacement (System 6): Storm drain installation along San Luis Ray Place, low-flow diversion structure installation, outfall grading, and eelgrass mitigation.
South Mission Beach Storm Drain Replacement (System 7): Storm drain and outfall replacement south of N Jetty Road.
Pavement restoration and bike lane striping along Mission Boulevard.
Miscellaneous work, including curb ramp and cross gutter installation.

Please refer to this exhibit to see all the systems shown.

Additional Community Impacts

While the South Mission Beach Storm Drain Replacement & Green Infrastructure projects are in process, there are additional community impacts to be aware of. For more information, please see the designated CIP project look up pages for Mission Beach Water & Sewer Repl (W) and Mission Beach Water & Sewer Repl (S).

Contact Us

For questions about this project, contact the Engineering & Capital Projects Department at 619-533-4207, email engineering@sandiego.gov or submit your inquiry online. Please reference "South Mission Beach Storm Drain Replacement & Green Infrastructure" in your inquiry.