⟁ Illinois Well Data field records · 2026 survey

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Alco Oil & Gas Corp.

Recorded as the driller on 123 water wells across 29Illinoiscounties in the Illinois State Geological Survey water well records, most in Lake County. Well-log records span 1891–1998.

123wells on record
—since 2022
29counties served
132 ftmedian depth

Counties served

Wells drilled by Alco Oil & Gas Corp., by county, across the full record.

CountyWells drilled
Lake County31
Shelby County11
Madison County10
Greene County8
Grundy County8
Warren County7
Adams County6
Pike County5
Randolph County3
Morgan County3
Schuyler County3
Kane County3
Show all 29counties
Winnebago County3
Edgar County2
Menard County2
Lasalle County2
Henry County2
Rock Island County2
Kendall County2
Washington County1
Clinton County1
Crawford County1
Hancock County1
Mcdonough County1
Iroquois County1
Henderson County1
Stark County1
Dupage County1
Jo Daviess County1

Well characteristics

Across the wells Alco Oil & Gas Corp. has drilled, the median depth is 132 ft (middle half 65 ft–210 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 Alco Oil & Gas Corp., straight from the public ISGS record:

"Records span 1891–1998" 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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