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Eastern San Joaquin Groundwater Basin Groundwater Management Plan
<br />Northeastern San Joaquin County Section 2
<br />Groundwater Banking Authority 78 Hydrogeology
<br />County will further decline groundwater levels and saline groundwater will continue to migrate
<br />east into the Basin as described in Section 2.2.8.
<br />Table 2-6 Summary of Current Water Rights and Contracts1
<br />District/Agency Source
<br />River/Reservoir
<br />Wet Year
<br />Quantity
<br />Dry Year
<br />Quantity Comments
<br />40,115 <40,115 Firm, dry2 Calaveras/
<br />New Hogan 27,000 <27,000 Estimated unused portion of
<br />CCWD’s 43,500 af allocation SEWD
<br />Stanislaus/
<br />New Melones 75,000 <75,000 Interim, subject to other users
<br />requirements and availability
<br />60,000 39,000 Firm
<br />WID Mokelumne/
<br />Camanche See note3 0 Nonfirm
<br />NSJWCD Mokelumne/
<br />Camanche 20,000 0 Subject to EBMUD supply
<br />and future requirements
<br />CSJWCD Stanislaus/
<br />New Melones 80,000 <80,000
<br />49,000 af firm supply, 31,000
<br />af interim supply subject to
<br />other user’s requirements
<br />SSJID/OID Stanislaus/
<br />New Melones 320,000 <320,000, Estimated use in County. 4
<br />CDWA Delta 226,000 226,000
<br />SDWA Delta 225,000 225,000
<br />Estimated based on current
<br />demand.
<br />10,000 10,000
<br />City of Tracy Delta Mendota
<br />Canal/CVP 7,500 7,500
<br />CVP Contract and water
<br />purchase agreements with
<br />Local Irrigation Districts
<br />San Joaquin River 30,000 30,000 Dependent on flow
<br />West Side ID Delta Mendota
<br />Canal/CVP 7,500 7,500 CVP Contract
<br />Plain View WD Delta Mendota
<br />Canal/CVP 21,000 21,000 CVP Contract
<br />Delta Mendota
<br />Canal/CVP 25,000 25,000 CVP Contract
<br />Banta-Carbona WD
<br />San Joaquin River 30,000 30,000 Depends on flow
<br />Hospital WD Delta Mendota
<br />Canal/CVP 34,000 34,000 CVP Contract
<br />Notes:
<br />1. The figures in this table are not necessarily authoritative and are provided for general information purposes only. The
<br />actual quantity of water available from year to year and the quantity that is actually used vary significantly.
<br />2. New Hogan Reservoir has an estimated yield of 84,100 af/yr. SEWD contract with the Bureau of Reclamation is for
<br />56.5% of the yield, and Calaveras County Water District rights to the remaining 43.5%. CCWD currently uses
<br />approximately 3,500 af of its allocation, and riparian demand is 13,000 af. Based on an agreement between CCWD
<br />and SEWD, SEWD currently has use of the unused portion of CCWD’s allocation.
<br />3. Under the WID-EBMUD water right settlement agreement, 60,000 af per year is the firm portion of the Woodbridge
<br />Irrigation District Water Rights. 60,000 af is the minimum amount available to WID during any year when the inflow to
<br />Pardee Reservoir is greater than 375,000 af. When the Pardee inflow is less than 375,000 af, the minimum amount
<br />available to WID is 39,000 af. WID is entitled to divert water in excess of the 60,000 af under the priority of its water
<br />right licenses when such water is available at WID’s point of diversion and is surplus to EBMUD’s downstream
<br />commitments under the Joint Settlement Agreement.
<br />4. OID and SSJID share equally rights to 600,000 af/yr when available. Of its 300,000 af/yr share, OID applies
<br />approximately 20,000 af/yr in Eastern San Joaquin County. SSJID is located completely within San Joaquin County.
<br />In years when the full allotment is not available, the amount is less than 320,000 af and is based on a formula which
<br />is part of the agreement with USBR.
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