⟁ Illinois Well Data field records · 2026 survey

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Schmalz Geo A & Son

Recorded as the driller on 95 water wells across 2Illinoiscounties in the Illinois State Geological Survey water well records, most in Winnebago County. Well-log records span 1942–1967.

95wells on record
—since 2022
2counties served
130 ftmedian depth

Counties served

Wells drilled by Schmalz Geo A & Son, by county, across the full record.

CountyWells drilled
Winnebago County94
Ogle County1

Well characteristics

Across the wells Schmalz Geo A & Son has drilled, the median depth is 130 ft (middle half 100 ft–190 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 Schmalz Geo A & Son, straight from the public ISGS record:

"Records span 1942–1967" 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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