⟁ Illinois Well Data field records · 2026 survey

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Woollen Earl D

Recorded as the driller on 43 water wells across 4Illinoiscounties in the Illinois State Geological Survey water well records, most in Dewitt County. Well-log records span 1941–1974.

43wells on record
—since 2022
4counties served
92 ftmedian depth

Counties served

Wells drilled by Woollen Earl D, by county, across the full record.

CountyWells drilled
Dewitt County20
Mclean County15
Piatt County4
Woodford County4

Well characteristics

Across the wells Woollen Earl D has drilled, the median depth is 92 ft (middle half 68 ft–151 ft), median tested yield 10 gpm, and median static water level — below ground surface. These summarize the company's own filed logs, not a marketing claim.

Original drilling logs

Recent well logs filed by Woollen Earl D, straight from the public ISGS record:

"Records span 1941–1974" refers to the earliest and latest well logs attributed to this company in the ISGS 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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