California Water Science Center (CAWSC) - Temecula Hydrogeology Project (THP)

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Temecula Hydrogeology

Welcome to the U.S. Geological Survey (USGS) Temecula website. This site provides hydrologic data collected or compiled by the USGS for the Temecula area; some additional data may be available from the USGS database National Water Information System (NWIS).

Project Chief: Wes Danskin
Phone: 619-225-6132
Email: wdanskin@usgs.gov

VDC Recharge Basin - TMVC (8S/1W-6R1-6)

Lithologic Summary

[Altitude of land surface, 1,252.78 feet above NAVD88. Depth is in feet below land surface. Soil and rock color notation from Munsell Color (2000). Drilled by U.S. Geological Survey using hydraulic rotary, August 2013. Total depth drilled 1033 feet. Screened intervals: 25-30, 110-130, 270-290, 540-560, 820-840, 940-960, and 980-1020 feet.]

Depth (ft) Description
From To
0 136 Gravelly (gran-sm peb) sand (m-vc); lt olive brown (2.5Y 5/3)
136 142 Sand (m-vc), minor gravel (gran); lt olive brown (2.5Y 5/3)
142 159 Sandy (m-vc) gravel (gran), mafic gravel <2cm; dark grayish brown (10YR 4/2)
159 180 Silty sand (f-c); lt yellowish brown (2.5Y 6/3)
180 205 Clayey silty sand (f-m); lt olive brown (2.5Y 5/3)
205 211 Silty sand (f-c); lt olive brown (2.5Y 5/3)
211 212 Gravelly (gran-sm peb) sand (m-vc); lt olive brown (2.5Y 5/3)
212 255 Silty sand (f-vc), minor clay, trace vc & gran; lt olive brown (2.5Y 5/3)
255 276 Sandy (vf-m) silty clay; lt yellowish brown (2.5Y 6/3)
276 360 Silty sand (vf-m), some c-vc sand, minor clay; lt olive brown (2.5Y 5/3)
360 385 Sand (f-c), minor silt; lt olive brown (2.5Y 5/3)
385 440 Silty sand (f-c), minor clay, minor gran; lt olive brown (2.5Y 5/3)
440 555 Clayey silty sand (f-c); lt olive brown (2.5Y 5/3)
555 565 Silty sand (f-c); lt olive brown (2.5Y 5/3)
565 615 Clayey sandy (vf-m) silt; lt olive brown (2.5Y 5/3)
615 625 Silty sand (f-c); lt olive brown (2.5Y 5/3)
625 645 Sandy (vf-m) clay; lt olive brown (2.5Y 5/3)
645 726 Clayey silty sand (f-m); lt olive brown (2.5Y 5/3)
726 733 Silty clay; lt olive brown (2.5Y 5/3)
733 766 Sandy (f-m) clayey silt; lt olive brown (2.5Y 5/3)
766 841 Clay, some Silt, trace sand (f-c); lt olive brown (2.5Y 5/3)
841 860 Sandy (vf-vc) clay, trace gravel (gran.); lt olive brown (2.5Y 5/3)
860 871 Clay, minor sand (vf-vc); lt olive brown (2.5Y 5/3)
871 875 Sandy (vf-vc) clay; lt olive brown (2.5Y 5/3)
875 887 Clayey sand (vf-vc); lt olive brown (2.5Y 5/3)
887 900 Clay, trace sand (vf-vc); lt olive brown (2.5Y 5/3)
900 904 Sandy (vf-vc) clay; lt olive brown (2.5Y 5/3)
904 955 Clayey sand (vf-vc), trace gravel (gran-sm peb); dark reddish brown to dark red (5YR 5/3 to 2.5YR 3/6) (Basalt)
955 985 Sandy (m-vc) gravel (gran-sm peb), v. angular; dark reddish gray (5YR 4/2)
985 1033 Sandy (m-vc) gravel (gran.-sm peb); dark reddish gray to black (5YR 4/2 to 2.5Y 2.5/1) (Metavolcanic sed.)