Illinois Well Data field records · 2026 survey

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Brown, Darwin

Recorded as the driller on 2,130 water wells across 11 Illinois counties in the Illinois State Geological Survey water well records, most in Kendall County. Well-log records span 1990–2015.

2,130wells on record
since 2022
11counties served
220 ftmedian depth

Counties served

Wells drilled by Brown, Darwin, by county, across the full record.

CountyWells drilled
Kendall County 1,033
Lasalle County 586
Kane County 184
Will County 149
Dekalb County 60
Grundy County 51
Dupage County 26
Lee County 26
Livingston County 11
Mchenry County 3
Cook County 1

Well characteristics

Across the wells Brown, Darwin has drilled, the median depth is 220 ft (middle half 140 ft–380 ft), median tested yield 30 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 Brown, Darwin, straight from the public ISGS record:

"Records span 1990–2015" 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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