Groundwater Sustainability Plan for the Orange County Basin
In 2014, the Legislature enacted the Sustainable Groundwater Management Act (SGMA) to address groundwater conditions throughout California. SGMA requires that all DWR designated high- and medium priority basins be sustainably managed. DWR designated the Coastal Plain of Orange County Groundwater Basin (“Basin 8- 1” or “Basin”) as a medium-priority basin, primarily due to heavy reliance on the Basin’s groundwater as a source of water supply ( Figure 6-1 ). All basins subject to SGMA are required to prepare a Groundwater Sustainability Plan (GSP) or an alternative to the GSP in accordance with the statutes.
Figure 6 - 1. Coastal Plain of Orange County Groundwater Basin, Basin 8-1 (Basin 8-1 Alternative, 2017)
In 2016, OCWD led the development of an alternative plan to meet SGMA compliance (Basin 8- 1 Alternative) in collaboration with IRWD and the City of La Habra. The Basin 8-1 Alternative was submitted to DWR in 2017 by OCWD, IRWD and the City of La Habra and approved as a SGMA- compliant alternative plan for the Basin. As part of the alternative plan, four Management Areas
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IRWD – 2025 Urban Water Management Plan
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