A M Jannsen Well Drilling Co. Inc.
Recorded as the driller on 1,746 water wells across 21Oregoncounties in the Oregon Water Resources Department (OWRD) well-log database, most in Washington County. Well-log records span 1938–2020.
Counties served
Wells drilled by A M Jannsen Well Drilling Co. Inc., by county, across the full record.
| County | Wells drilled |
|---|---|
| Washington County | 1,017 |
| Multnomah County | 207 |
| Clatsop County | 132 |
| Clackamas County | 121 |
| Columbia County | 116 |
| Yamhill County | 73 |
| Tillamook County | 38 |
| Marion County | 10 |
| Wasco County | 7 |
| Klamath County | 4 |
| Umatilla County | 4 |
| Harney County | 3 |
Well characteristics
Across the wells A M Jannsen Well Drilling Co. Inc. has drilled, the median depth is 242 ft (middle half 130 ft–406 ft), median tested yield 30 gpm, and median static water level 49 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 Well Drilling Co. Inc., straight from the public OWRD record:
"Records span 1938–2020" 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.
Free. Goes to licensed drillers working Washington County, including A M Jannsen Well Drilling Co. Inc..
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