⟁ Wisconsin Well Data field records · 2026 survey

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Thomas D Roos

Recorded as the driller on 848 water wells across 9 Wisconsin counties in the Wisconsin Department of Natural Resources Groundwater Retrieval Network (GRN) well-construction records, most in Marquette County. Well-log records span 1988–2015.

848wells on record
—since 2022
9counties served
138 ftmedian depth

Counties served

Wells drilled by Thomas D Roos, by county, across the full record.

CountyWells drilled
Marquette County 453
Adams County 233
Columbia County 71
Waushara County 42
Juneau County 26
Green Lake County 18
Dane County 2
Sauk County 2
Wood County 1

Well characteristics

Across the wells Thomas D Roos has drilled, the median depth is 138 ft (middle half 98 ft–182 ft), median tested yield 15 gpm, and median static water level 30 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.

Original drilling logs

Recent well logs filed by Thomas D Roos, straight from the public WI DNR record:

"Records span 1988–2015" refers to the earliest and latest well logs attributed to this company in the WI DNR 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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