South Coast

The 11,000 square-mile South Coast region is the most urbanized and populous region in the state, home to more than half the state’s population residing in just 7% of the state’s total land area. The region receives imported water supplies from the State Water Project, the Los Angeles Aqueduct, and the Colorado River Aqueduct which account for about half the region’s water demands; the remaining demands are met through groundwater, recycled water, and some desalinated water.

State Water Project Table A Allocations 1967-1995

California Department of Water Resources (DWR) | January 14th, 2022

Summary

Statement of Findings regarding the Approval of the San Luis Rey Valley – Upper San Luis Rey Valley Subbasin Groundwater Sustainability Plan

California Department of Water Resources (DWR) | January 18th, 2024

Summary

The Department of Water Resources (Department) is required to evaluate whether a submitted groundwater sustainability plan (GSP or Plan) conforms to specific requirements

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Hydrological Region