A GSP is the plan outlining how to achieve sustainably managed groundwater that meets the requirements of SGMA. GSAs in high and medium priority groundwater basins are required to submit a GSP to the State. The plan must outline how the GSA will implement, manage and measure specific actions to achieve groundwater sustainability within 20 years. If a GSA already had an existing groundwater management plan that is functionally equivalent to a GSP, they were able to submit it for DWR approval as an Alternative Plan.
In December 2016, the CVWD, DWA, and MSWD collaboratively submitted the 2013 Mission Creek/Garnet Hill Water Management Plan and the SGMA Alternative Groundwater Sustainability Plan Bridge Document for the Mission Creek Subbasin, and other supporting documents as an Alternative Plan to a GSP for the Subbasin, which was subsequently approved by DWR on July 17, 2019.