Granite Drilling Company
Recorded as the driller on 476 water wells across 6 California counties in the California Department of Water Resources (DWR) Well Completion Reports database, most in Monterey County. Well-log records span 1977–2026.
Counties served
Wells drilled by Granite Drilling Company, by county, across the full record.
| County | Wells drilled |
|---|---|
| Monterey County | 422 |
| San Benito County | 25 |
| Santa Cruz County | 16 |
| Santa Clara County | 11 |
| Fresno County | 1 |
| Madera County | 1 |
Well characteristics
Across the wells Granite Drilling Company has drilled, the median depth is 587 ft (middle half 437 ft–700 ft), median tested yield 27 gpm, and median static water level 130 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.
"Records span 1977–2026" 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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