⟁ Illinois Well Data field records · 2026 survey

Illinois Well Data › Lasalle County › Tonica (61370)

Tonica, IL (61370): well depth, water level & drilling cost

✓ 103 ISGS records · Lasalle County

175 ftmedian well depth
86 ft–230 fttypical depth range
—median static water level
15 gpmmedian yield (37 tests)

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How deep are wells in and around Tonica (61370), Illinois?

The median drilled well depth in and around Tonica (61370) is 175 ft, based on 102 wells with recorded depths in the state ISGS database. Half fall between 86 ft and 230 ft; 90% are shallower than 475 ft.

How much does it cost to drill a well in and around Tonica (61370)?

Applying published per-foot rates to the local median depth of 175 ft: drilling and casing alone typically runs $4,375–$11,375; a complete system including pump, pressure tank, and hookup typically runs $10,500–$17,500. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around Tonica (61370)?

Few static water level measurements are recorded for this area.

Drilled depth distribution

0–50 ft 11 50–100 ft 26 100–150 ft 10 150–200 ft 14 200–300 ft 26 300–400 ft 2 400–600 ft 6 600+ ft 7
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Part of Lasalle 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.