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On March 30, 2016, in response to the Sustainable Groundwater Management Act (SGMA), ID4 executed the Memorandum of Understanding to form the Kern River Groundwater Sustainability Agency (Kern River GSA) with the City of Bakersfield and Kern Delta Water District. The Kern River GSA has prepared a Groundwater Sustainability Plan (GSP) to cooperatively manage shared groundwater resources in a sustainable manner. The GSP is being submitted in January 2020 in coordination with four additional GSPs that collectively cover the entire Kern County Subbasin, the largest groundwater subbasin in California. The Kern River GSA GSP Plan Area covers 361 square miles, about 13 percent of the 2,834-mile Subbasin and will be cooperatively managed by Kern River GSA member agencies. Local surface water from the Kern River, imported water from the State Water Project (SWP), recycled water, and other surface water sources will be used to support beneficial uses. These surface water sources are supplemented by groundwater and managed conjunctively throughout the Plan Area.