Draft 2025 Urban Water Management Plan

OCWD Management Area

Table 6-1: Sources of Recharge Water Supplies

RECHARGE LOCATION

SUPPLY SOURCES AND DESCRIPTION

Base Flow

Perennial flows from the upper watershed in Santa Ana River;

Santa Ana River, recharge basins, and Santiago Creek

predominately treated wastewater discharges

Santa Ana River

Storm Flow

Precipitation from upper watershed flowing in Santa Ana River through Prado Dam Storm flows in Santiago Creek and Santa Ana River water pumped from Burris Basin via Santiago Pipeline Precipitation and runoff from Orange County foothills, subsurface inflow from basin boundaries Advanced treated wastewater produced at GWRS plant in Fountain Valley

Santa Ana River, recharge basins, and Santiago Creek

Storm Flow / Santa Ana River

Santiago Creek, Santa Ana River, recharge basins

Santiago Creek

Precipitation and subsurface inflow

Basin-wide

Incidental Recharge

Groundwater Replenishment System

Injected into Talbert Barrier and Mid- Basin Injection Wells, recharged in Kraemer, Miller, La Palma and Miraloma basins Injected into Alamitos Barrier

Recycled Water

Water Replenishment District of Southern CA

Water purified at the Leo J. Vander Lans Treatment Facility in Long Beach

Untreated

State Water Project and Colorado River Aqueduct State Water Project and Colorado River Aqueduct treated at MWD Diemer Water Treatment Plant

Various recharge basins

Imported Water

Treated

Injected into Alamitos Barrier

BASIN 8-1 ALTERNATIVE 2022 UPDATE

Water Resource Management Programs 6-1

Appendix F - 139

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