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  • About
    • Amended Judgment - CB
      • Section 01: Declaration of Rights
      • Section 02: Appointment of Watermaster
      • Section 03: Physical Solution
      • Section 04: Storage
      • Section 05: Jurisdiction
      • Section 06: General Provisions
    • Amended Judgment - WCB
      • Section 01: Boundaries
      • Section 02: Definitions
      • Section 03: Rights
      • Section 04: Transferability
      • Section 05: Physical Sol.
      • Section 06: Exchange Pool
      • Section 07: Emergency
      • Section 08: Injunction
      • Section 09: Order
      • Section 10: Lost Rights
      • Section 11: Watermaster
      • Section 12: Jurisdiction
      • Section 13: Modifications
      • Section 14: Reservation
      • Section 15: Designees
      • Section 16: Intervention
      • Section 17: Successors
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    •    Basins /
    • About the West Coast Basin
    • Rights Usage
    • West Basin Rights Holders
    • Groundwater Recharge
    • Map

    "The West Coast Groundwater Basin (Basin) underlies 160 square miles in the southwestern part of the Los Angeles Coastal Plain in Los Angeles County. The Basin provides groundwater to approximately eleven cities and unincorporated areas of Los Angeles County."
    -West Basin Water District


    West Basin Rights Holders AY 2024-25

    PartyRightsOYCDrought COFlexNo FlexStoredProduced
    West Basin Brewer Desalter0.000.0000.000.0000.00
    Shell Oil Co NCWUP0.000.0000.000.00072.54
    Montrose Chemical Corporation of California1.201.2000.000.000-3.09
    Lockheed Martin Corporation0.100.1000.000.0000.00
    Boeing Company1.701.7000.000.00020.48
    Honeywell International, Inc. (NCWUP)0.000.0000.000.0000.00
    CEMEX, Inc.0.000.0000.000.0000.00
    Shell Oil Products (Wilmington Site)0.000.0000.000.0000.00
    California Water Service Co./Hawthorne Lease0.001882.0001882.000.000487.83
    Hawthorne, City of1882.000.000-1882.000.0000.00
    Myron Z. Chalavin 0.0012.10012.100.0000.00
    Shell Oil Company1019.500.000-1019.500.0000.00
    Tesoro Refining & Marketing Company LLC8741.009760.5001019.500.0007503.38
    Engelsma, Susan Trust12.100.000-12.100.0000.00
    Honeywell International, Inc.22.5022.5000.000.0000.00
    California Water Service Company4070.004070.0000.000.000824.32
    California Water Service Company (Dominguez)10417.4510417.4500.000.0004461.01
    Golden State Water Company7502.242776.553.390.000.0033008248.52
    Hillside Memorial Park104.1011.5300.000.00093.35
    Inglewood, City of4731.894731.8900.000.000678.09
    Kinder Morgan Liquids Terminals LLC167.00167.0000.000.00028.97
    Los Angeles County Department of Parks 363.70340.1800.000.000233.26
    Los Angeles County Sanitation Districts-JWPCP102.00102.0000.000.0000.00
    Lomita, City of1352.00902.0000.000.0000.00
    Manhattan Beach, City of1131.20226.2400.000.002262.451.87
    Torrance Refining Company LLC2596.402596.4030.430.000.000744.61
    Eco Services Operations, LLC521.00371.7900.000.00079.16
    Roman Catholic Archbishop of Los Angeles72.30222.3000.000.000189.32
    Southern California Edison Co.57.1057.106.220.000.00012.87
    Torrance, City of5638.861127.7700.000.0011277.23495.94
    Long Beach, City of0.700.7000.000.0000.00
    Phillips 66 Company6170.006170.00787.780.000.0004533.57
    Rolling Hills Country Club290.00239.0000.000.000247.00
    SCI California Funeral Services, Inc39.4039.4000.000.00043.02
    ABC Nursery, Inc.24.1024.1000.000.0000.00
    Chandler Palos Verdes Sand 4.204.2000.000.0000.00
    El Segundo City of 953.00953.0000.000.0000.00
    Evergreen America Corporation5.405.4000.000.0000.00
    Fujimoto, SR. 20.0020.0012.280.000.0000.00
    Hollywood Park Land Company, LLC0.000.0000.000.0000.00
    Hughes Aircraft Company0.000.0000.000.0000.00
    Inglewood Park Cemetery0.000.00350.000.0000.00
    Los Angeles, City of Dept of Water and Power1503.001503.0000.000.0000.00
    Mayflower Nurseries0.000.0000.000.0000.00
    McDonnell Douglas Corp.0.000.0000.000.0000.00
    Nozaki, Sumikichi7.007.0000.000.0000.00
    Pacific Crest Cemetery Company0.00-3.9200.000.0000.00
    Palos Verdes Begonia Farm0.000.007.40.000.0000.00
    Vukelich, Mike Jr.10.00-1.0800.000.0000.00
    Watson Land Company80.2080.2000.000.0000.00
    Zeigler, Maxwell T.0.000.0000.000.0000.00
    Aqua Capital Management LP0.000.0000.000.0000.00
    Asahi Fancy Koi, Inc2.002.0032.20.000.0000.00
    Automation Industries, Inc0.700.703.40.000.0000.00
    CBS, Inc.9.509.5000.000.0000.00
    Carson-Harbor Village Mobile Home Park7.007.0000.000.0000.00
    Carson-Madrona Company104.00104.0000.000.0000.00
    Century Builders4.704.7000.000.0000.00
    Chevron USA Inc.4601.304601.3000.000.0000.00
    Delaney, Golda Estate of4.104.1010.20.000.0000.00
    Gillingham, Florence R, et al2.402.4000.000.0000.00
    Honold, Kristin Brandsma11.8011.8000.000.0000.00
    Leuzinger, Emma L Estate of1.401.404.50.000.0000.00
    Lopes, Frank3.703.709.40.000.0000.00
    Loyola Marymount University48.1048.1000.000.0000.00
    Mori, Roy H and Kenji3.603.609.20.000.0000.00
    Northrop Corporation38.1538.1500.000.0000.00
    Rehor, Josephine P2.202.2000.000.0000.00
    Ocean Industries, Inc.0.000.0000.000.0000.00
    Western Water Service Company0.000.0000.000.0000.00
    Wiseburn School District8.208.2000.000.0000.00
    Coastline Church of Christ0.700.703.40.000.0000.00
    Curtis, Owen W0.360.362.720.000.0000.00
    PartyRightsOYCDrought COFlexNo FlexStoredProduced

    Groundwater Recharge

    "The West Coast Groundwater Basin (Basin) underlies 160 square miles in the southwestern part of the Los Angeles Coastal Plain in Los Angeles County. The Basin provides groundwater to approximately eleven cities and unincorporated areas of Los Angeles County."
    -West Basin Water District

    Map of the Central and West Coast Basins

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    Forms

    • Carryover Conversion - Central Basin
    • Carryover Conversion - West Basin
    • Lease - Central Basin
    • Lease - West Basin
    • Sale - Central Basin
    • Sale - West Basin
    • Water Rights Worksheet Central Basin (Excel)
    • Water Rights Worksheet West Basin (Excel)


    Water Replenishment District

    4040 Paramount Boulevard
    Lakewood, CA 90712
    Phone: 562.275.4300
    Visit Website

    2024-2025 Leases

    Groundwater leases are temporary assignments of rights to other parties to produce groundwater in the Central and West Coast Basins. Two different types of leases are commonly used: Standard Leases and Leases with flex

    For more information please visit our Lease Reports page.

    There are no leases for this FY.

    2025-1969 Leases

    Groundwater leases are temporary assignments of rights to other parties to produce groundwater in the Central and West Coast Basins. Two different types of leases are commonly used: Standard Leases and Leases with flex

    For more information please visit our Lease Reports page.

    There are no leases for this FY.

    2024-2025 Carryover

    One-Year Carryover(OYC)
    One-Year Carryover are unused pumping rights carried over from the previous year. In the Central Basin, rights holders are allowed to carryover unused rights up to 60% of their APA. In the West Coast Basin the amount is 100% of their Adjudicated Rights. The total amount of One-Year Carryover will be reduced if a party elects to do carryover conversion during the year.

    Drought Carryover (DCO, DCO'77, DCO'91)
    This type of carryover is only possible during years in which the Water Replenishment District declares a Water Emergency. Once accumulated, drought carryover does not expire and remains with a pumper until it is used or sold.

    Read More >>

    Type Amount

    2024-2025 Water in Storage

    Under certain circumstances, rights holders are allowed to convert one-year carryover(OYC) into stored water. Please refer to our Storage section for more information.

    Account Amount
    Total Put Into Storage0.00
    Total Individual Storage5,708.92
    Total Community Storage0.00
    Total Storage5,708.92

    2024-2025 Sales

    There are no sales in this FY.

    Unused Rights

    Unused rights are rights owned in the current AY but were not pumped and not carried over to the next AY. In general, unused rights are not effected by carryover conversion unless a large amount OYC is converted and the lower limits of a pumpers' one-year carryover limit are increased by the amount of the Annual Pumping Right (in the Central Basin, the minimum carryover limit is 20 acre-feet or 20% of APA+Leases with Flex, whichever is greater). Usually, Unused rights can only be reduced by pumping, sales or leasing.

    Non-Consumptive Rights

    Unused rights are rights owned in the current AY but were not pumped and not carried over to the next AY. In general, unused rights are not effected by carryover conversion unless a large amount OYC is converted and the lower limits of a pumpers' one-year carryover limit are increased by the amount of the Annual Pumping Right (in the Central Basin, the minimum carryover limit is 20 acre-feet or 20% of APA+Leases with Flex, whichever is greater). Usually, Unused rights can only be reduced by pumping, sales or leasing.

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    Wells

    Converting Carryover to Storage

    If a party has one-year carryover (OYC), they may choose to convert all or part of that carryover to storage. Parties who own water rights (an annual pumping allocation in the Central Basin or an annual right in the West Coast basin) can transfer one-year carryover into their individual storage account. If the individual storage account is full, they may use their community storage if space is available. Drought carryover (DCO) is not eligible for conversion. Please see the Storage section for more information.

    Storage Accounts for Amount
    Total Put Into Storage0.00
    Total Individual Storage0.00
    Total Community Storage0.00
    Total Storage0.00

    Production to Date

    If a party has one-year carryover (OYC), they may choose to convert all or part of that carryover to storage. Parties who own water rights (an annual pumping allocation in the Central Basin or an annual right in the West Coast basin) can transfer one-year carryover into their individual storage account. If the individual storage account is full, they may use their community storage if space is available. Drought carryover (DCO) is not eligible for conversion. Please see the Storage section for more information.



    Production Amount
    Total Production 0.00
    Storage Withdraws -0.00
    Net Production (Used to calculate next year's OYC) 0.00