⟁ Oregon Well Data field records · 2026 survey

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Mcmullen Drilling Corp.

Recorded as the driller on 1,329 water wells across 9 Oregon counties in the Oregon Water Resources Department (OWRD) well-log database, most in Columbia County. Well-log records span 1982–2022.

1,329wells on record
7since 2022
9counties served
185 ftmedian depth

Counties served

Wells drilled by Mcmullen Drilling Corp., by county, across the full record.

CountyWells drilled
Columbia County 1,049
Multnomah County 96
Clatsop County 95
Washington County 68
Clackamas County 10
Tillamook County 7
Sherman County 2
Grant County 1
Wallowa County 1

Well characteristics

Across the wells Mcmullen Drilling Corp. has drilled, the median depth is 185 ft (middle half 100 ft–300 ft), median tested yield 15 gpm, and median static water level 60 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.

Original drilling logs

Recent well logs filed by Mcmullen Drilling Corp., straight from the public OWRD record:

"Records span 1982–2022" 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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