St. Charles Drilling Co.
Recorded as the driller on 463 water wells across 14 Illinois counties in the Illinois State Geological Survey water well records, most in Monroe County. Well-log records span 1965–1981.
Counties served
Wells drilled by St. Charles Drilling Co., by county, across the full record.
| County | Wells drilled |
|---|---|
| Monroe County | 182 |
| St. Clair County | 96 |
| Madison County | 42 |
| Greene County | 33 |
| Randolph County | 27 |
| Calhoun County | 26 |
| Jersey County | 26 |
| Washington County | 13 |
| Pike County | 5 |
| Scott County | 5 |
| Macoupin County | 4 |
| Clinton County | 2 |
…and 2 more Illinois counties.
Well characteristics
Across the wells St. Charles Drilling Co. has drilled, the median depth is 225 ft (middle half 140 ft–356 ft), median tested yield 8 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 St. Charles Drilling Co., straight from the public ISGS record:
"Records span 1965–1981" 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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