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On March 22, 2016, Patterson Irrigation District filed to become its own Groundwater Sustainability Agency (GSA). This is the first step in complying with Sustainable Groundwater Management Act (SGMA). The District intends to work with other GSA's within our groundwater basin to form a common Groundwater Sustainability Plan (GSP).

North-Central Delta-Mendota Sub-basin GSP Homepage


 Delta-Mendota Subbasin FAQ's


DWR Homepage for SGMA