Groundwater Information Center
DWR and cooperating federal, state and local agencies, measure groundwater level in thousands of monitoring wells throughout the state. We develop databases for groundwater levels, and report hydrologic data and historic groundwater levels.
Water Data Library (WDL) - a statewide repository of groundwater level and groundwater quality data.
Drought - Drought maps showing groundwater levels in specific Central Valley well locations, and the effect on representative groundwater basins (Click on this link and then the "Groundwater" tab to view available Water Well Drought Maps)
For more Information on groundwater level monitoring activities in your area, click on the appropriate DWR link below.
Northern Region (Data, Reports, Map)
North Central Region (Data, Reports, Map)
South Central Region (Data, Reports, Map)
Southern Region (Data, Reports, Map)