San Diego Hydrogeology
Country Club - SDCC (18S/2W-11P1-6)
Lithologic Summary
Land-surface elevation is 149.96 feet above NAVD88. Depth is in feet below land surface. Drilled by U.S. Geological Survey using hydraulic rotary, March 11, 2010. Total depth drilled 1720 feet. Screened intervals: 1660-1700, 1330-1350, 1050-1070, 600-620, 360-380, and 130-170 feet.
Depth (ft) | Description | |
---|---|---|
From | To | |
0 | 10 | Gravelly sandy silt; silt w/ vf-vc sand & granules-sm pebbles; dk yellowish brown (10YR 3/4) |
10 | 50 | Sandy gravel; gran-vl peb w/ m-vc sand; dk yellowish brown (10YR 3/4) |
50 | 60 | Sand; c-vc sand; lt yellowish brown (2.5Y 6/3) |
60 | 70 | Silt; silt; lt yellowish brown (2.5Y 6/3) |
70 | 90 | Sandy gravel, gran-med peb and m-vc sand; lt yellowish brown (2.5Y 6/4) |
90 | 100 | Silt; silt; lt yellowish brown (2.5Y 6/3) |
100 | 110 | Gravelly sand; c-vc sand w/ gran; lt yellowish brown (2.5 6/3) |
110 | 120 | Gravel; gran-lg peb; various colors |
120 | 125 | Gravelly sand; m-vc sand w/ granules; yellowish brown (10YR 5/6) |
125 | 130 | Sandy silt; silt w/ m-vc sand; grayish brown (2.5Y 5/2) |
130 | 140 | Silt; silt; olive brown (2.5Y 4/4) |
140 | 160 | Silt; silt; v dk gray (5Y 3/1) |
160 | 220 | Silt; silt w/ shell fragments; dk olive gray (5Y 3/2) |
220 | 360 | Silt; silt; dk olive gray (5Y 3/2) |
360 | 380 | Sandy silt; silt w/ m-vc sand; dk olive gray (5Y 3/2) |
380 | 600 | Silt; silt; dk olive gray (5Y 3/2) |
600 | 620 | Silty sand; vf-vc sand w/ silt; dk olive gray (5Y 3/2) |
620 | 740 | Clayey silt; silt w/ clay; dk grayish brown (10Y 4/2) |
740 | 850 | Silty clay; clay w/ silt; grayish brown (2.5Y 5/2) |
850 | 860 | Silty clay; clay w/ silt; grayish brown (10YR 5/2) |
860 | 940 | Clayey silt; silt w/ clay; grayish brown (2.5Y 5/2) |
940 | 1,030 | Silty sand; vf-m sand w/ silt; grayish brown (2.5Y 5/2) |
1030 | 1,070 | Silty sand; m-vc sand w/ silt; grayish brown (2.5Y 5/2) |
1070 | 1,100 | Silty clay; clay w/ silt; lt olive brown (2.5Y 5/3) |
1100 | 1,130 | Gravelly silty sand; vf-vc sand w/ silt & gran-sm peb; lt olive brown (2.5Y 5/3) |
1130 | 1,200 | Silty clay; clay w/ silt; brown (10YR 5/3) |
1200 | 1,250 | Sandy silt; silt w/ vf-m sand; lt olive brown (2.5Y 5/3) |
1250 | 1,300 | Clayey silt; silt w/ clay; grayish brown (2.5Y 5/2) |
1300 | 1,580 | Slightly gravelly silty sand; vf-vc sand w/ silt & minor gran-sm peb; brown (10YR 5/3) |
1580 | 1,720 | Silty clay; clay w/ silt; dk olive gray (5Y 3/2) |
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