Groundwater Sustainability Plan for the Santa Monica Groundwater Subbasin

The Santa Monica Basin Groundwater Sustainability Agency (GSA), which comprises the City of Santa Monica, the City of Los Angeles via its Department of Water and Power (LADWP), the City of Culver City, the City of Beverly Hills, and the County of Los Angeles, has prepared this Groundwater Sustainability Plan (GSP) for the non-adjudicated portion of the Santa Monica Subbasin (Subbasin) of the Los Angeles Plain Groundwater Basin (DWR Basin 4-011.01).

This GSP was prepared in compliance with the 2014 Sustainable Groundwater Management Act (SGMA), which is codified in California Water Code (CWC), Part 2.75 (Sustainable Groundwater Management), §10720 et seq.1 This GSP has been developed in accordance with the Department of Water Resources (DWR) GSP Regulations to apply to the entirety of the Subbasin that is not adjudicated.

The purpose of this GSP is to define the groundwater conditions that will be used to ensure the long-term sustainability of groundwater resources for current and future stakeholders through ongoing, proactive stewardship. Long-term sustainability includes:

• Maintaining sufficient groundwater in storage to allow for continued groundwater production that meets the operational demands and regulatory commitments of the City of Santa Monica as well as other groundwater producers and stakeholders.• Ensuring groundwater conditions in the Subbasin support sufficient seaward flow of fresh water to prevent significant and unreasonable seawater intrusion in the Silverado aquifer.
• Continuing groundwater production at rates and in aquifers that do not impact the ability of groundwater-dependent ecosystems to access groundwater.

Due to size, this file has been divided into five parts.

Part 1, Part 2, Part 3, Part 4, Part 5