Data Map Options

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Click linked text for additional information.
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Note: Drawing time may vary with connection speed and browser and charts must be displayed from the USGS installed wells page.

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Multiple-depth well sites

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Groundwater sites
NWIS groundwater sites (well)
Surface-water and spring sites
NWIS surface-water sites (estuary, lakes, streams, & spring)
Project study area
Project developed data
Project study area subbasins
Project developed data
Geology from CA Geological Survey
These datasets will be replaced soon.
Recent Earthquakes (Turning this layer on may disable map functions.)
USGS earthquakes