H A M Drilling Inc.
Recorded as the driller on 273 water wells across 9 California counties in the California Department of Water Resources (DWR) Well Completion Reports database, most in Contra Costa County. Well-log records span 1934–1990.
Counties served
Wells drilled by H A M Drilling Inc., by county, across the full record.
| County | Wells drilled |
|---|---|
| Contra Costa County | 123 |
| San Mateo County | 102 |
| Alameda County | 24 |
| Solano County | 12 |
| Tulare County | 4 |
| Napa County | 3 |
| Fresno County | 2 |
| Marin County | 2 |
| San Joaquin County | 1 |
Well characteristics
Across the wells H A M Drilling Inc. has drilled, the median depth is 175 ft (middle half 110 ft–250 ft), median tested yield 35 gpm, and median static water level 38 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.
"Records span 1934–1990" 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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