Donald J Firkus SR
Recorded as the driller on 502 water wells across 5 Wisconsin counties in the Wisconsin Department of Natural Resources Groundwater Retrieval Network (GRN) well-construction records, most in Portage County. Well-log records span 1988–2004.
Counties served
Wells drilled by Donald J Firkus SR, by county, across the full record.
| County | Wells drilled |
|---|---|
| Portage County | 383 |
| Marathon County | 55 |
| Waupaca County | 50 |
| Waushara County | 8 |
| Wood County | 6 |
Well characteristics
Across the wells Donald J Firkus SR has drilled, the median depth is 77 ft (middle half 56 ft–107 ft), median tested yield 12 gpm, and median static water level 32 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.
Original drilling logs
Recent well logs filed by Donald J Firkus SR, straight from the public WI DNR record:
"Records span 1988–2004" refers to the earliest and latest well logs attributed to this company in the WI DNR 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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