⟁ Illinois Well Data field records · 2026 survey

Illinois Well Data › Knox County › Gilson (61436)

Gilson, IL (61436): well depth, water level & drilling cost

✓ 119 ISGS records · Knox County

220 ftmedian well depth
135 ft–310 fttypical depth range
—median static water level
10 gpmmedian yield (95 tests)

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How deep are wells in and around Gilson (61436), Illinois?

The median drilled well depth in and around Gilson (61436) is 220 ft, based on 115 wells with recorded depths in the state ISGS database. Half fall between 135 ft and 310 ft; 90% are shallower than 600 ft.

How much does it cost to drill a well in and around Gilson (61436)?

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.

What is the static water level in and around Gilson (61436)?

Few static water level measurements are recorded for this area.

Drilled depth distribution

0–50 ft 9 50–100 ft 10 100–150 ft 13 150–200 ft 15 200–300 ft 39 300–400 ft 1 400–600 ft 15 600+ ft 13
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Part of Knox County well records.

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), grouped by ZIP from the recorded address. Cost estimate applies published per-foot ranges to the local median depth — full methodology & sources.