Illinois Well Data field records · 2026 survey

Illinois Well Data › Henry County

Henry County, Illinois: well depth, yield & drilling cost

✓ 2,794 ISGS records · verified 2026-08-20

275 ftmedian well depth
160 ft–450 fttypical depth range
20 gpmmedian yield (1,504 tests)

How deep are wells in Henry County, Illinois?

The median drilled well depth in Henry County is 275 ft, based on 2,744 wells with recorded depths in the state ISGS database. Half of all wells fall between 160 ft and 450 ft; 90% are shallower than 535 ft. Wells drilled since 2016 have a median depth of 350 ft.

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

Applying published per-foot rates to the local median depth of 350 ft: drilling and casing alone typically runs $8,750–$22,750; a complete system including pump, pressure tank, and hookup typically runs $21,000–$35,000. Actual quotes depend on site access, geology, and casing requirements.

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What is the static water level in Henry County?

Few static water level measurements are recorded for this county.

How much water do wells in Henry County produce?

The median tested yield is 20 gpm (middle half: 15 gpm–30 gpm), from 1,504 pump tests. A typical household needs 5–10 gpm.

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Drilled depth distribution

0–50 ft 140 50–100 ft 192 100–150 ft 283 150–200 ft 406 200–300 ft 429 300–400 ft 359 400–600 ft 798 600+ ft 137

Who drills wells in Henry 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
Stoll, Austen39
Allen, Joseph36
Gelement, Val33
Gingerich, Corwin30
Dana, Glen18
Albrecht, Harold Dean17
White, Matt13
Harvey, Lucius8

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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.