Illinois Well Data field records · 2026 survey

Illinois Well Data › Jo Daviess County

Jo Daviess County, Illinois: well depth, yield & drilling cost

✓ 2,914 ISGS records · verified 2026-08-20

220 ftmedian well depth
180 ft–305 fttypical depth range
20 gpmmedian yield (2,379 tests)

How deep are wells in Jo Daviess County, Illinois?

The median drilled well depth in Jo Daviess County is 220 ft, based on 2,880 wells with recorded depths in the state ISGS database. Half of all wells fall between 180 ft and 305 ft; 90% are shallower than 410 ft. Wells drilled since 2016 have a median depth of 220 ft.

How much does it cost to drill a well in Jo Daviess County?

Applying published per-foot rates to the local median depth of 220 ft: drilling and casing alone typically runs $5,500–$14,300; a complete system including pump, pressure tank, and hookup typically runs $13,200–$22,000. Actual quotes depend on site access, geology, and casing requirements.

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What is the static water level in Jo Daviess County?

Few static water level measurements are recorded for this county.

How much water do wells in Jo Daviess County produce?

The median tested yield is 20 gpm (middle half: 15 gpm–25 gpm), from 2,379 pump tests. A typical household needs 5–10 gpm.

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Drilled depth distribution

0–50 ft 6 50–100 ft 72 100–150 ft 260 150–200 ft 682 200–300 ft 1,070 300–400 ft 463 400–600 ft 286 600+ ft 41

Who drills wells in Jo Daviess County?

Companies and licensed drillers by number of wells logged in this county, per records filed with the Illinois State Geological Survey.

DrillerWells since 2016
Thompson, John J.73
Thompson, John44
Lyons, Larry23
Shawn N Lyons4
Faherty, Jeff2
Schuur, Bill1
Bull Well Drilling Inc1
Stoll, Austen1

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Method: medians computed from ISGS records (ISGS water wells; engineering, mineral and stratigraphic test borings, mine shafts, outcrops and monitoring wells are excluded, as are wells the survey records as plugged; depths 0-5,000 ft). Cost estimate applies published per-foot ranges (checked 2026-06-11) to the local median depth — full methodology & sources.