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Eastern San Joaquin Groundwater Basin Groundwater Management Plan Northeastern San Joaquin County Section 8 Groundwater Banking Authority 127 Integrated Conjunctive Use Program 30,000 af per year though 2010. Phase II will increase deliveries to 44, 000 af annually and provide a net reduction of groundwater pumping from the underlying Basin of approximately 30,000 af annually. The total cost of the project is estimated at $126 million. (SSJID, 2001) The Cities of Escalon, Lathrop, and Manteca typically exceed the 1.0 af per acre safe yield of the Basin. The South County Program would allow those cities to pump groundwater within the safe yield (SSJID, 1994). 8.2.5 Woodbridge Dam Replacement and Canal System The Woodbridge Diversion Dam (Woodbridge Dam) is a 12-foot tall removable flash board dam built in 1910. The Woodbridge Dam is operational from March to October at which time Lodi Lake is heavily used for recreation. The Woodbridge Dam feeds a 100-mile series of canals west of Lodi to Northeast Stockton. The location of the dam and canals is shown in Figure 8-15. The Woodbridge Dam itself is considered an impediment to anadromous fish and is recognized as a key area for the restoration of fall run Chinook Salmon by the National Marine Fishery Service (NMFS) and the California Department of Fish and Game (CDFG) (CDM, WMP, 2002). In 2000, WID completed the Lower Mokelumne River Restoration Program Final EIR/EIS for new improved fish passage facilities. The project consists of the removal of the old flash board dam and the construction of a new adjustable weir dam with state of the art fish ladders and a monitoring station for migrating anadromous fish. Additionally, a fish screen and new diversion pipeline extending form Lodi Lake to the canal system will prevent incidental takes of salmon smolts and juveniles without the loss of water deliveries to WID customers. The proposed improvements exceed Lower Mokelumne River environmental restoration goals while maintaining irrigated agriculture in Woodbridge. The new Woodbridge Dam will operate year round keeping Lodi Lake full in all months. Year round diversions could facilitate groundwater recharge and interim deliveries to other in-basin partners including the City of Stockton and SEWD. (http://www.spk.usace.army.mil/pub/outgoing/co/reg/pn/199900057.pdf, 2002) In 2003, the City of Lodi and WID reached an agreement by which the City of Lodi would purchase 6,000 af/yr at a cost of $200 /af for a term of 40-years. Through a drip irrigation conversion incentive program, WID was able to conserve 6,000 af of water for the sale. The annual payment of $1.2 million dollars per year is fixed even if the City of Lodi is ready to put its water to beneficial use; however, a three year banking clause allows the City of Lodi to gain credit for the undelivered water up to a total of 18,000 af. The City of Lodi is currently exploring various alternatives to put the water to beneficial use including drinking water treatment and distribution, groundwater recharge, or injection. (http://www.lodi.gov/city- council/html/body_2003-03-11s.htm, 2003) 8.2.6 Eastern Water Alliance Canal The Eastern Water Alliance Canal is essentially a locally driven completion of the Folsom South Canal. In concept, the Alliance could construct an open canal along the 100-ft contour or pipeline equivalent in order to connect the FSC to the Mokelumne River, Calaveras River, and New Melones Conveyance System. The proposed alignment is shown in Figure 8-116. The Alliance Canal would facilitate water transfers and the diversion of wet year flow to the recharge basins and irrigated lands throughout Eastern San Joaquin County. The ultimate capacity of the Alliance Canal varies; however, the Alliance Canal would transport water both from north to south and vice versa. If left unlined, the canal could also double as a groundwater recharge facility. Preliminary discussions have suggested that a canal 300-feet wide would provide the equivalent recharge of over 1000 acres of recharge basins. Capital costs for the originally envisioned 85-ft wide, 8-ft deep, 2:1 side sloped, 6-mile long unlined canal constructed from the