This report summarizes Water Year (WY) 2023 (October 1, 2022 – September 30, 2023) conditions and groundwater management actions and projects in the North American Subbasin
(NASb or Subbasin) consistent with the Sustainable Groundwater Management Act (SGMA) Annual Report requirements. The NASb Groundwater Sustainability Agencies (GSAs) submitted the
adopted Groundwater Sustainability Plan (GSP) for review by the California Department of Water Resources (DWR) on January 24, 2022. The NASb GSAs refer to this GSP version as the NASb
2021 GSP. The Department of Water Resources found that the NASb 2021 GSP met the requirements of SGMA and the GSP regulations and provided an approved determination on July
27, 2023. This report represents the third Annual Report prepared since GSP adoption.
Read Water Year 2023 Annual Report for the North American Subbasin