Washington Well Data field records · 2026 survey

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Larry Mclanahan

Recorded as the driller on 240 water wells across 10 Washington counties in Washington State Department of Ecology well construction reports, most in Adams County. Well-log records span 1993–2016.

240wells on record
since 2022
10counties served
1,520 ftmedian depth

Counties served

Wells drilled by Larry Mclanahan, by county, across the full record.

CountyWells drilled
Adams County 83
Grant County 69
Lincoln County 24
Benton County 22
Yakima County 14
Franklin County 13
Klickitat County 7
Walla Walla County 6
Douglas County 1
Spokane County 1

Well characteristics

Across the wells Larry Mclanahan has drilled, the median depth is 1,520 ft (middle half 972 ft–2,068 ft), median tested yield 2,000 gpm, and median static water level 467 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.

Original drilling logs

Recent well logs filed by Larry Mclanahan, straight from the public Ecology record:

"Records span 1993–2016" refers to the earliest and latest well logs attributed to this company in the Ecology 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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