STATE WATER PROJECT
The District imports water from the State Water Project on a regular basis, to increase the water supply to groundwater basins in the District beyond what water is naturally available within the Santa Clara River watershed.
State Water imports, paid through a voter-approved property tax special assessment and a Water Purchase surcharge to extraction fees, benefit all groundwater basins District-wide. Most of the imported State Water is used to replenish groundwater basins, and a smaller portion is delivered to farms to reduce their reliance on groundwater extractions.
UWCD maximizes State Water deliveries by working with partners across the region to strategically transfer and exchange supplies for mutual benefit. UWCD also receives surplus State Water, known as Article 21 water, when it is available and a need for supplemental water exists within the District.
Article 21 Water entering Lake Piru
REGIONAL COLLABORATION:
STATE WATER INTERCONNECTION PROJECT
The City of Ventura has had a State Water entitlement since the 1970s but has been unable to use it because it lacked the facilities for conveyance. The proposed interconnection project will allow State Water to western Ventura County. The interconnection project is designed to move up to 18,800 acre-feet of water per year through the Calleguas MWD system. The project is a collaboration between the City of Ventura, Calleguas Municipal Water District, and United Water Conservation District to enhance local and regional water security.
By partnering to bring State Water to multiple agencies throughout Ventura County, the project is economically advantageous and meets a regional water need.
The project will include two turnouts for United, which will use the additional supply options to manage the groundwater basins within its boundaries more efficiently or as a backup supplies.

Article 21 leaving Lake Pyramid
PROJECT BENEFITS:
Enables emergency deliveries to Oxnard Hueneme Pipeline or groundwater recharge basins
Blending with recycled water at the Rose and Noble groundwater recharge basins
Enables imports of surplus State Water
Allows delivery to the Pumping Trough Pipeline in lieu of groundwater pumping from the Lower Aquifer System
Connection for potential emergency supply for Calleguas MWD customers for long-term outages
Article 21 leaving Lake Pyramid
LATEST UPDATES
Optimizing Our State Water Allocation
OCTOBER 2022 – PRESENTATION
This presentation provides updates on the State Water Project.
Allocations, Conjunctive Use & Optimization
JUNE 2020 – PRESENTATION
This presentation provides updates on the State Water Project.
Optimizing Our State Water Project Allocation
NOVEMBER 2019 – PRESENTATION
See how United Water Conservation District is working to increase sustainability by diversifying its water supply through conservation and other projects to reduce reliance on imports from the State Water Project.





