San Diego Hydrogeology
Boundary Water - SDBW (19S/2W-2C7-11)
Lithologic Summary
Land-surface elevation is 45.26 feet above NAVD88. Depth is in feet below land surface. Drilled by U.S. Geological Survey using hydraulic rotary, August 5, 1995. Total depth drilled 1,430 feet. Screened intervals: 1340-1360, 1170-1190, 945-965, 580-600, and 260-280 feet.
Depth (ft) | Description | |
---|---|---|
From | To | |
0 | 20 | Sand, fine to medium |
20 | 60 | Sand, fine to very coarse, poorly sorted shell fragments |
60 | 150 | Sandy gravel, medum to very |
150 | 190 | Sand, fine |
190 | 310 | Silty sand, very fine sand to medium |
310 | 650 | Clayey sand with very fine to fine sand |
650 | 670 | Sandy clay |
670 | 710 | Sandy silt, very fine sand to medum |
710 | 770 | Clayey silt, some fine sands |
770 | 830 | Sandy clay |
830 | 950 | Clayey silt, some very fine to fine sands |
950 | 970 | Sandy silt |
970 | 990 | Silty sand |
990 | 1030 | Sand very fine to very coarse |
1030 | 1050 | Silty sand |
1050 | 1430 | Sand, very fine to medum sand |
Project Chief: Wes Danskin
Phone: 619-225-6132
Email: wdanskin@usgs.gov
Welcome to the United States Geological Survey (USGS) San Diego Hydrogeology (SDH) 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: July 2023.
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: wdanskin@usgs.gov or send a letter). 619.225.6132