San Diego Hydrogeology

Recent Activity

Past Activities

New Data

For the latest multiple-depth well data available, please see the USGS installed wells link under the Data tab located in the navigation bar near the top of this page.

Recent USGS Reports

Open-file report 2010-1234
  • Water-Quality Data from Storm Runoff after the 2007 Fires, San Diego County, California - view open-file report
  • Installation of multiple-depth monitoring wells in Otay River Valley, Hydrologic investigations of the San Diego area, California - view fact sheet (PDF)
  • Determining Age and Vertical Contribution of Ground Water Pumped from Wells in a Small Coastal River Basin. A Case Study in the Sweetwater River Valley, San Diego County, California - view USGS Open File Report released (2005)

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Project Chief: Wes Danskin
Phone: 619-225-6132

Welcome to the United States Geological Survey (USGS) San Diego Hydrogeology project website, which provides geologic and hydrologic information for the transboundary San Diego–Tijuana area, USA and Mexico. This website provides background information about the project; a variety of news items; a large amount of data, in particular for USGS multiple-depth, monitoring-well sites; geologic and hydrologic models; and additional resources including photos, illustrations, and references. Last updated: April 2016

Some additional data may be available from the USGS database National Water Information System (NWIS).

Questions about San Diego Hydrogeology? Please contact Wes Danskin (email: or send a letter). 619.225.6132