Resources for SGMA Implementation

Groundwater Sustainability Concepts and Myths from the National Groundwater Association.

Have you ever wondered how rivers flow in September when the snow has melted and no rain has fallen for months? Or what sustains a desert oasis, or that relaxing hot spring? The answer to these questions is: groundwater – the water stored in the aquifers under the Earth’s surface. Groundwater is a critical source of California’s water supply, providing 40% in most years, and up to 60% in periods of drought.

DWR has updated the Sustainable Groundwater Management Program’s SGMA Data Viewer to include updated subsidence information to help Groundwater Sustainability Agencies (GSAs), water managers, and others implement the Sustainable Groundwater Management Act (SGMA). The data now includes historical subsidence information from 1949 to 2005 and updated satellite based remote sensing InSAR data from June 2015 to June 2018.