Datum Exploration Inc.
Recorded as the driller on 223 water wells across 12 California counties in the California Department of Water Resources (DWR) Well Completion Reports database, most in Inyo County. Well-log records span 1985–1991.
Counties served
Wells drilled by Datum Exploration Inc., by county, across the full record.
| County | Wells drilled |
|---|---|
| Inyo County | 88 |
| Los Angeles County | 51 |
| San Bernardino County | 20 |
| San Diego County | 18 |
| Santa Barbara County | 15 |
| Contra Costa County | 10 |
| Orange County | 9 |
| Merced County | 5 |
| Ventura County | 4 |
| Alameda County | 1 |
| Riverside County | 1 |
| San Benito County | 1 |
Well characteristics
Across the wells Datum Exploration Inc. has drilled, the median depth is 40 ft (middle half 25 ft–82 ft), median tested yield 8 gpm, and median static water level 63 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.
"Records span 1985–1991" refers to the earliest and latest well logs attributed to this company in the DWR database — the state digitized older paper logs, so the first date is the oldest record on file, not necessarily the company's founding year.
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