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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 Central Basin
    • Rights Usage
    • Central Basin Rights Holders
    • Groundwater Recharge
    • Map

    About the Central Basin

    The Central Basin consists of a series of underground aquifers beneath much of South Los Angeles County. It extends south to Orange County and west to the Newport-Inglewood Fault.

    The Water Repleishment District recharges groundwater reserves in the Central Basin through spreading grounds on the San Gabriel River and utilizes injection facilities in the Alamitos Gap to block seawater intrusion.


    Central Basin Rights Holders AY 2024-25

    PartyRightsOYCDrought COFlexNo FlexStoredProduced
    ABC Unified School District298.00178.8025.210.00-250.0008.65
    Cerritos, City of4680.031040.911038.22524.503950.004761.825444.67
    Downey, City of16553.627932.17910.060.00-2000.00010290.96
    Lakewood, City of Water Department9432.000.001500-2000.00-2200.003380.294841.07
    South Montebello Irrigation District1268.00323.3200.00500.0001219.56
    South Gate, City of11183.002236.60447.210.00-1000.00863.975997.43
    Puente Basin Water Agency965.00100.00127.75-465.00-500.004790.00
    Boeing Company0.000.0000.000.00068.13
    Omega OU1/OU3 LLC0.500.0000.000.0005.78
    Demenno/Kerdoon0.000.0000.000.0000.00
    Water Replenishment District0.000.0000.000.0000.00
    Boeing Company (Former Compton Site)0.000.0000.000.0000.00
    Artesia Cemetery District12.0020.000-12.000.0000.00
    Bellflower Home Garden Water Company306.0020.000-306.000.0000.00
    Buell, Mary Dolores1.000.000-1.000.0000.00
    California Water Service Company (East LA)11774.001944.083037.76-1250.000.0008571.01
    California Water Service Company (Dominguez)6480.003138.000-1250.000.0001037.61
    Montebello, City of386.5020.000-386.500.0000.00
    PABCO Building Products, LLC500.000.950-500.000.0000.00
    Liberty Utilities Corporation1159.302454.130806.000.0003116.10
    Pico Rivera, City of5579.002940.90566.26-500.000.0002908.11
    San Gabriel Valley Water Company2569.4221.980386.500.004252.492295.75
    Tract 180 Mutual Water Company2137.00712.2063.96-150.000.000918.62
    Walnut Park Mutual Water Company1009.00231.80204.64150.000.001077.91706.54
    Whittier, City of 895.001594.4604892.000.0017904162.58
    American Textile Maintenance Company65.0039.00350.000.00048.47
    Artesia, City of24.0020.0000.000.0001.44
    Bell Gardens, City of1914.00848.40149.880.000.0000.00
    Bellflower-Somerset Mutual Water Company4412.882055.7300.000.0010003236.80
    California American Water Company2875.001725.00350.000.0001330.20
    California, State of (Caltrans)50.00-24370.8600.000.0004.07
    Coast Packing Company530.00318.0034.210.000.000119.24
    Commerce, City of5081.003048.601778.350.000.0001221.91
    Compton, City of5780.002166.9559.640.001500.0005022.55
    Darling-Delaware Company, Inc117.0070.2040.950.000.0000.00
    El Rancho Unified School District55.0033.0030.490.000.0000.00
    Golden State Water Company16439.208951.9847.210.000.00013385.79
    Huntington Park, City of3853.002311.80681.830.000.0002068.99
    La Habra Heights County Water District2668.001603.2400.000.0001874.05
    Little Lake Cemetery District14.0020.0013.220.000.0000.00
    Long Beach, City of32692.006538.404.290.000.0010019.6123851.83
    Los Angeles, City of Dept of Water and Power17236.003447.2052500.000.0022911.3412.13
    Los Angeles County Rancho Los Amigos490.00294.00144.360.000.000162.04
    Lunday-Thagard Oil Company212.000.008.31-212.000.0000.00
    Lynwood, City of5337.003202.2031.610.000.0002875.00
    Lynwood Park Mutual Water Company222.00133.2000.000.00025.36
    Maywood Mutual Water Company No. 1741.00444.609.660.000.000471.96
    Maywood Mutual Water Company No. 2912.00525.7919.350.000.000696.62
    Maywood Mutual Water Company No. 31407.00524.9672.640.000.001001061.09
    Montebello Land and Water Company1899.00760.12247.28637.000.0002193.28
    Newark Group, Inc., The157.00-2.6600.000.00096.53
    Norwalk, City of2273.001363.80161.860.000.000287.42
    Orchard Dale Water District1254.00725.5769.520.000.0001414.81
    Paradise Memorial Park16.0020.000.950.000.0007.72
    Paramount, City of5883.003529.801290.580.000.0002085.08
    Paramount Unified School District46.0027.6000.000.0000.16
    Pico Water District3624.002174.40284.260.00-500.0001923.14
    Rockview Dairies, Inc.101.0088.6002.000.000125.95
    Roman Catholic Archbishop of Los Angeles347.00208.2090.610.000.000221.95
    St. John Bosco School42.0025.2012.670.000.0004.15
    Santa Fe Springs, City of4035.782421.471283.020.000.0001200.26
    Scantlebury, Robert P.4.0020.0021.490.000.0000.42
    Signal Hill, City of2022.001213.20707.70.000.000612.68
    Southern California Edison Company670.00402.00234.50.000.0000.00
    Suburban Water Systems4195.00260.3535-392.000.0002125.46
    Tract 349 Mutual Water Company423.0098.355.280.000.000479.68
    Vernon, City of7539.004523.40521.170.000.0003441.10
    Virginia Country Club274.00164.4000.000.000197.99
    Whittier Union High School District100.0010.0024.12-50.000.005014.82
    Yamamoto, George and Alice Acct.14.0020.0013.820.000.0000.00
    Rowland Water District1.006.170-1.000.0000.00
    HMB Bandini, LLC1.004.1000.000.0000.15
    California Domestic Water Company87.0020.000-87.000.0000.00
    Dolan, J.E. P.A. 2.004.000-2.000.0000.00
    Footbridge 1 Trust3.7520.000-3.750.0000.00
    Corning Trust3.753.750-3.750.0000.00
    Nancy Dee Keane Living Trust4.004.000-4.000.0000.00
    Hoke, Barbara1.500.000-1.500.0000.00
    Rosing, Nancy1.500.000-1.500.0000.00
    Baker, Mary28.000.000-28.000.0000.00
    Julee Margulies Metz, Jon Schwartz and Darrin Margulies Trust3.003.000-3.000.0000.00
    Arco Metals Co./ American Brass0.0010.0024.460.000.0000.00
    Aqua Capital Management LP0.000.0000.000.0000.00
    Arzouman, Charles and Neuart0.000.0000.000.0000.00
    Ashland Chemical Company0.000.0000.000.0000.00
    Atkinson Brick Company0.000.0000.000.0000.00
    Atlantic Richfield Co.0.000.0000.000.0000.00
    Baker Commodities Inc.60.0036.0000.000.0000.00
    Bellflower, City of680.0020.004830.000.0000.00
    Bellflower Unified School District89.0053.4000.000.0000.00
    Boy Scouts of America1.00-6.8000.000.0000.00
    Central Basin Municipal Water District4.6520.0000.000.0000.00
    Cerritos Community College District147.0088.2000.000.0000.00
    Chevron USA, Inc.0.000.0000.000.0000.00
    Compton Unified School District38.0022.80350.000.0000.00
    Flesch, Elizabeth Et Al14.0020.00140.000.0000.00
    Ford Motor Company4.5020.004.50.000.0000.00
    Frampton, William H. 0.000.0000.000.0000.00
    Gordon, Robert E.4.0020.004.80.000.0000.00
    Inglewood Park Cemetery317.0020.00350.000.0000.00
    Lincoln Memorial Park Inc34.0020.4060.240.000.0000.00
    Lussman, Paul H. Jr., Et Al7.0020.006.760.000.0000.00
    Northrop Grumman/Omega Chemical4.5020.00200.000.0000.00
    Norwalk-La Mirada Unified School District378.00226.8097.30.000.0000.00
    O N K Farms8.0020.0080.000.0000.00
    Pico Boys Baseball, Inc.13.0020.0000.000.0000.00
    Rocky Mountain Industries, Inc.0.000.0000.000.0000.00
    Los Angeles County Public Works - Sativa Water System0.0020.00162.590.000.0000.00
    September Properties LLC0.00-0.2100.000.0000.00
    Tucker, William M. 0.00-0.0200.000.0000.00
    United States Gypsum Company0.000.0000.000.0000.00
    WEMS, Inc., A California Corp.8.0020.0080.000.0000.00
    Wolfsberger, Helen/Joseph, Chris2.0020.0020.000.0000.00
    Automobile Club of Southern California6.0020.0000.000.0000.00
    Angeles Abbey Memorial Park, Inc.4.0020.0000.000.0000.00
    Chang, I-Hsin and Associates1.0020.003.840.000.0000.00
    Crandell, F.J.1.0020.001.750.000.0000.00
    Emoto, John H2.0020.0020.000.0000.00
    Exide Technologies0.000.0000.000.0000.00
    Farmers 0.000.0000.000.0000.00
    Frampton, Harvey0.000.0000.000.0000.00
    Graham, Hugh W or Marcia K, Trustees0.000.0000.000.0000.00
    Harada Investments, LLC6.0020.0060.000.0000.00
    Hathaway, Jesse R0.000.0000.000.0000.00
    Hathaway, Merrie F1.8620.0000.000.0000.00
    Hathaway, Richard F, Jr.4.0716.2800.000.0000.00
    Hathaway, William A0.000.0000.000.0000.00
    Hathaway, Loline0.000.0000.000.0000.00
    Jones Company, The0.000.0000.000.0000.00
    Kotake, Massao0.000.0000.000.0000.00
    Martin, Mary0.000.0000.000.0000.00
    Mellano, G et al0.00-15.9300.000.0000.00
    Mitsuuchi, Mary F Trust11.0020.0000.000.0000.00
    New England Mutual Life Insurance Company2.0020.0020.000.0000.00
    Oltmans Construction Company3.0020.0030.000.0000.00
    Patrician Associates Inc/Majestic Realty Company12.0020.00120.000.0000.00
    Petersburg, L.P.1.0010.0000.000.0000.00
    Randall, Villis Family Trust0.000.0000.000.0000.00
    Rippy, Francine4.0720.0000.000.0000.00
    Rosales, Elvira C3.0020.0050.000.0000.00
    Rosing, L S Trust and P Schwartz0.000.0000.000.0000.00
    Simmons Survivors Trust0.000.0000.000.0000.00
    Statewide Stations, Inc.1.0020.00150.000.0000.00
    Taurek, Mary0.000.0010.000.0000.00
    Vangrootheest, Ernest A10.000.0000.000.0000.00
    Zane Living Trust0.000.0000.000.0000.00
    Equilon Enterprises, LLC6.0020.0060.000.0000.00
    CECC, LLC.0.000.0000.000.0000.00
    Metro Water Systems, Inc.0.000.0000.000.0000.00
    Tesoro Refining 54.0032.40350.000.0000.00
    Tesoro Logistics Operations0.000.0000.000.0000.00
    Forestar (USA) Real Estate Group Inc.0.0020.0000.000.0000.00
    EcoGas, Inc.0.1544.0000.000.0000.00
    LA Brickyard, LLC9.0020.009.750.000.0000.00
    Hoke, Barbara and Rosing, Nancy0.000.0000.000.0000.00
    Margulies, Kathryn and Schwartz, Jon0.000.0000.000.0000.00
    S&M Mellano 1036 PACIFIC LLC0.000.0000.000.0000.00
    TF Hidden Creeks, L.P.0.000.0000.000.0000.00
    OU2 Environmental Remediation Trust0.0020.0012.950.000.0000.00
    Omega OU2, LLC.7.471.0000.000.0000.00
    Vernon Environmental Response Trust0.0020.00350.000.0000.00
    Blakslee Trust33.0020.0000.000.0000.00
    Simmons, John George0.000.0700.000.0000.00
    Simmons, Richard Bennett0.000.0700.000.0000.00
    PartyRightsOYCDrought COFlexNo FlexStoredProduced

    Groundwater Recharge

    About the Central Basin

    The Central Basin consists of a series of underground aquifers beneath much of South Los Angeles County. It extends south to Orange County and west to the Newport-Inglewood Fault.

    The Water Repleishment District recharges groundwater reserves in the Central Basin through spreading grounds on the San Gabriel River and utilizes injection facilities in the Alamitos Gap to block seawater intrusion.

    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 Storage-676.46
    Total Community Storage0.00
    Total Storage-676.46

    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