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Project: City of Los Angeles - Tujunga Enhancement - Construction Project

Description: The Tujunga Spreading Grounds (TSG) is an existing Los Angeles Department of Water and Power (LADWP) facility that collects stormwater from the Tujunga Wash and infiltrates it into the San Fernando Groundwater Basin (SFB). During high flows, the TSG is able to capture and recharge about 8,000 acre-feet per year (AFY). The TSG Enhancement Project (Project) will increase the facility's intake capacity and allow recharge of an additional 8,000 AFY. To accomplish this, the Project will add two new intakes and modify the existing intake to increase intake capacity from 250 to 450 cubic feet per second (cfs). The existing 20 basins will also be consolidated to 9 basins to increase storage capacity from 100 to 944 acre-feet. Control equipment will be modernized to increase operational efficiency during storm events. In addition, one existing intake will be modified to accept dry-weather flows.

Reference Number: 3940P01D1712660

Implemented By: City of Los Angeles

Objective: This project will divert and infiltrate storm water and dry weather flows into existing spreading grounds. The Project will recharge groundwater, alleviate local flooding, and improve downstream water quality by reducing pollutant loading.

Type: Infrastructure Improvement

Total Cost: $7,000,000.00

Project Status: Project Implementation

On Time?: Yes    Within Scope?: Yes    Within Budget?: Yes

Estimated Completion: 1/31/2021    Actual Completion:

Associated Counties: Los Angeles

Project Benefits a Disadvantaged Community (or SDAC): No

Contribution SourcesContribution DateContribution Amount
Prop. 1, Multibenefit Stormwater Management Projects7/23/2018$7,000,000.00

Project MetricMetric TopicQuantityUnit
Infrastructure ImprovementOther  

Water Action Plan Target

Expand Water Storage Capacity and Improve Groundwater ManagementAction Description


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