⟁ Illinois Well Data field records · 2026 survey

Illinois Well Data › Warren County › Gerlaw (61435)

Gerlaw, IL (61435): well depth, water level & drilling cost

✓ 230 ISGS records · Warren County

138 ftmedian well depth
100 ft–405 fttypical depth range
—median static water level
15 gpmmedian yield (189 tests)

Pull every recorded well near a Gerlaw (61435) address — $49

How deep are wells in and around Gerlaw (61435), Illinois?

The median drilled well depth in and around Gerlaw (61435) is 138 ft, based on 227 wells with recorded depths in the state ISGS database. Half fall between 100 ft and 405 ft; 90% are shallower than 476 ft.

How much does it cost to drill a well in and around Gerlaw (61435)?

Applying published per-foot rates to the local median depth of 138 ft: drilling and casing alone typically runs $3,450–$8,970; a complete system including pump, pressure tank, and hookup typically runs $8,280–$13,800. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around Gerlaw (61435)?

Few static water level measurements are recorded for this area.

Drilled depth distribution

0–50 ft 2 50–100 ft 51 100–150 ft 72 150–200 ft 28 200–300 ft 15 300–400 ft 1 400–600 ft 57 600+ ft 1
Looking at a specific property in Gerlaw (61435)?

See every recorded well near any address — depths, water levels, yields, original driller's logs — in a one-time report.

Free lookup Property report — $49
Get quotes from drillers who work in Gerlaw (61435)

Free. Goes to licensed drillers working Warren County.

Part of Warren 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.