Fernangeles Park Stormwater Capture Project


The Fernangeles Project will collect runoff from a 318-acre drainage area and potentially capture 231 acre-feet per year. Proposed scope of work at Fernangeles Park would include the installation of a 1.7-acre infiltration gallery to capture stormwater from the Caltrans pump station and the surrounding neighborhood for infiltration and replenishment of the San Fernando Groundwater Basin. The infiltration gallery would overlap open space and two existing sports fields, including the infield and outfield of one baseball field and one softball field. The Project will also install catch basins and bioswales to collect surface flows that typically flood the nearby streets during rain events. In addition to the gallery, other underground stormwater components will include the installation of a diversion structure, desilting basin, piping, a cross gutter, two hydrodynamic separators, and flow-measuring devices. The Park will be improved with two new baseball fields with backstops, dugouts, batting cages, and field lighting, new picnic tables, EV charging station, hydration station, and educational signage. There will also be green street elements included on Allegheny Street. Most components will be within RAP’s property except for the diversion structure, catch basin, and portions of the conveyance pipes, which will be within the Caltrans’ or the public right-of-way. Environmental studies started in September 2019 and pre-design started in December 2019. Design began in October 2020. The first community outreach meeting was held in August 2020 and the second community outreach meeting was held in October 2020.

Status: Design
Cost: $39,317,214
Funding: LADWP; Safe Clean Water Program – Measure W (Regional, pending)
Agency Lead: City of Los Angeles
Footprint: 1.7 acres
Drainage Area: 318 acres
Volume Capture: 231 acre-feet/yr
Implemented Control Measures: Underground infiltration gallery to infiltrate stormwater
Key Benefits: Increase local water supply, improve downstream water quality in receiving water bodies, increase capacity in flood control infrastructure, expand park infrastructure, job creation, environmental education