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5.0 IMPACT OVERVIEW <br /> The cumulative water resources impacts of potential concern include the following: <br /> Water Consumption <br /> ter <br /> The expansion and year-round maintenance of the Tracy Lakes, <br /> willgresult in a et loss of water twith the increased use of o P <br /> for irrigation(golf course and pasture) and domestic water supply <br /> local surface and groundwater system in comparison with existing irrigated conditions main losses will be <br /> from lake evaporation and evapotranspiration from turf and <br /> Groundwater Overdraft <br /> The existing groundwater resources in San Joaquin County are in a state of overdraft. Project plans to <br /> pump groundwater for lake water level maintenance and irrigation will further add to the overdraft <br /> conditions. This could affect groundwater levels locally to the detriment of other water users in the area. <br /> Reduced Surface <br /> Outflow <br /> By capturing and retaining essentially all surface flow in Jahant Slough,and possibly diverting flows from <br /> the Mokelumne,the project will contribute to a reduction in surface water flows to the Sacramento-San <br /> Joaquin Delta. <br /> Floodplain Storage <br /> The enlargement and management of the Tracy Lakes as year-round water bodies will decrease, to a <br /> small extent, the floodwater storage capacity in the local floodplain of the Mokelumne River-Jahant <br /> Slough area. <br /> Nitrate Loading <br /> The introduction of nitrogen via on-site wastewater disposal and irrigation and fertilization of golf course <br /> and pasture areas will add to the long-term nitrate concentration in groundwater in the area. Nitrate <br /> concentration in groundwater are generally increasing throughout the Central Valleyas a result of <br /> agricultural and waste disposal practices, causing violation of drinking water standards in many areas. <br /> The project will add to the overall nitrate loading. <br /> Biological Resources <br /> Development of the project site would contribute towards the reduction of foraging and nesting habitat <br /> for the Swainson's hawk in the Dry Creek subregion. Because so little of the riparian woodland <br /> stands remain in San Joaquin County and adjacent counties, any decrease in this habitat is <br /> 5-4 <br />