T and L levees in Santa Ana River

OCWD’s Santa Ana River Operations

A dedicated webpage has been created in response to community questions about OCWD’s work in the river, a decades-long ongoing effort to sustainably manage and replenish the groundwater basin.

La Palma Basin

View OCWD’s Daily Water Supplies

Our Daily Water Supply Report provides the latest water supply information, helping you understand how OCWD manages and protects our most precious resource.

Groundwater Replenishment System

NEW WATER YOU CAN COUNT ON

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gallons produced

OC GROUNDWATER BASIN (through end of August 2026)

OCWD tracks how much water enters, leaves and remains in the groundwater basin to maintain a reliable water supply for 2.5 million people in north and central Orange County. The basin is kept below its approximately 500,000 acre-feet of usable storage to help prevent seawater intrusion and groundwater from rising into homes, businesses and neighborhoods.

Groundwater recharge

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ac-ft
Water Level Rising

Groundwater pumping

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ac-ft
Water Level Rising

Upcoming Agendized Meetings