The 2007 DWWSP EIR describes the need for water supply transfer agreements when the diversion prohibition in the State Water Boards Standard Permit Term 91 (Term91) is in effect. To provide a reliable water supply during such conditions, the Project Partners may enter into water supply transfer agreements with holders of senior water rights or contracts with the Bureau of Reclamation for diversions within the Sacramento River watershed. During periods when the Term 91 diversion prohibition is in effect, the Project Partners would divert water through transfer agreements or sales, as authorized by such senior water rights or contracts.
The 2007 DWWSP EIR identified several senior water rights holders as potential suppliers to the Project Partners when the Term 91 diversion prohibition is in effect. Since that time, additional potential suppliers have been identified, including The Nature Conservancy (TNC). TNC has a flow-based water right from Mill Creek, which discharges into the Sacramento River. TNC would ensure water flow in Mill Creek to the Sacramento River for benefit of salmon and the Project Partners would redivert it approximately 120 miles downstream. Initially, TNC is willing to agree to a lease of up to 2.5 Total Acre Feet (TAF) annually during the period of late June through October31, 2021 at a rate of up to 6.0 million gallons per day (MGD).
This addendum addresses the potential lease of TNC water (up to 2.5 TAF) to the Project Partners during the period of late June 2021 through October 31, 2021. The water would be diverted at the DWWSP intake/diversion structure, located on the Sacramento River, at a rate not to exceed 6.0 MGD up to a total of 2.5 TAF.
This it to advise that on June 17, 2021 the Woodland-Davis Clean Water Agency (WDCWA), acting CEQA lead agency, approved addendum #12 to the EIR for the DWWSP that the City of Davis (then acting as CEQA lead agency) certified on October 16, 2007. WDCWA approved Addendum #12 and found and determined that, considering the changes in the project are described in Addendum #12, the 2007 EIR remains adequate and no subsequent EIR or further CEQA review is required for the DWWSP.