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Basin 8-1 Overview <br />that is in the Santa Ana Canyon Management Area. OCWD has been managing the <br />majority of Basin 8-1 since its formation in 1933. <br />The South East Management Area includes the southern and southeastern portion of <br />Basin 8-1 that is hydrogeologically connected to the OCWD Management Area but is <br />outside of OCWD's service area. This area consists of several, disconnected, small <br />fringe areas that are within the DWR designated boundary of Basin 8-1. This <br />management area includes areas under the jurisdiction of the IRWD, the El Toro Water <br />District and the City of Orange. The groundwater basin in this area is thin and contains <br />more clay and silt deposits than aquifers in the OCWD Management Area. Groundwater <br />historically has flowed out of this area into the OCWD Management Area. Production <br />has been minimal in this area due to hydrogeological conditions with little potential for <br />significant future increases. <br />The Santa Ana Canyon Management Area includes the easternmost section of Basin 8- <br />1. This area includes land under the jurisdiction of several cities, two counties, and two <br />water districts, including a portion that is within the OCWD service area. Groundwater <br />production is relatively minor compared to groundwater production in the OCWD <br />Management Area. The western boundary of this management area is located at <br />Imperial Highway in the city of Anaheim where the basin thickness begins to increase. <br />Imperial Highway crosses the Santa Ana River where OCWD begins to divert river water <br />into the recharge facilities for percolation into the groundwater basin. <br />The Basin 8-1 Alternative is organized as follows: <br />• Overview: Provides a map and description of Basin 8-1 and a brief description of the <br />basin management areas. <br />• Hydrogeology of Basin 8-1: Provides a description of the hydrogeology of Basin 8-1 <br />including a description of the basin, the aquifer systems, fault zones, total basin volume, <br />basin cross -sections, basin characteristics, and general groundwater quality. <br />• La Habra -Brea Management Area: Provides a description of sustainable management of <br />the La Habra -Brea Management Area <br />C OCWD Management Area: Provides a description of sustainable management of the <br />OCWD Management Area <br />• South East Management Area: Provides a description of sustainable management of the <br />South East Management Area <br />• Santa Ana Canyon Management Area: Provides a description of sustainable <br />management of the Santa Ana Canyon Management Area <br />2017 BASIN 8-1 ALTERNATIVE Overview 3 <br />