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DESCRIPTION:

Latitude 38°00'49",   Longitude 122°01'53"   NAD27
Contra Costa County, California   , Hydrologic Unit 18050001

Well depth: 139 feet
Hole depth: 139 feet
Land surface altitude: 45.00 feet above NGVD29.
Well completed in "Central Valley aquifer system" (S100CNRLVL) national aquifer.
Well completed in "Quaternary Alluvium" (110ALVM) local aquifer

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Field groundwater-level measurements	1970-10-29	1994-04-15	70
Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP)	1970-10-29	1982-09-24	49
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