A M Jannsen Drilling
Recorded as the driller on 2,026 water wells across 17 Oregon counties in the Oregon Water Resources Department (OWRD) well-log database, most in Washington County. Well-log records span 1929–2005.
Counties served
Wells drilled by A M Jannsen Drilling, by county, across the full record.
| County | Wells drilled |
|---|---|
| Washington County | 1,074 |
| Multnomah County | 260 |
| Clackamas County | 206 |
| Clatsop County | 145 |
| Yamhill County | 103 |
| Tillamook County | 86 |
| Columbia County | 65 |
| Marion County | 35 |
| Wasco County | 18 |
| Hood River County | 11 |
| Harney County | 6 |
| Lincoln County | 5 |
…and 5 more Oregon counties.
Well characteristics
Across the wells A M Jannsen Drilling has drilled, the median depth is 235 ft (middle half 123 ft–400 ft), median tested yield 24 gpm, and median static water level 51 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.
Original drilling logs
Recent well logs filed by A M Jannsen Drilling, straight from the public OWRD record:
"Records span 1929–2005" refers to the earliest and latest well logs attributed to this company in the OWRD 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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