⟁ Idaho Well Data field records · 2026 survey

Idaho Well Data › Madison County

Madison County, Idaho: well depth, water level & drilling cost

✓ 3,987 IDWR records · verified 2026-10-12

98 ftmedian well depth
78 ft–140 fttypical depth range
24 ftmedian static water level
25 gpmmedian yield (1,560 tests)

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How deep are wells in Madison County, Idaho?

The median drilled well depth in Madison County is 98 ft, based on 3,034 wells with recorded depths in the state IDWR database. Half of all wells fall between 78 ft and 140 ft; 90% are shallower than 275 ft. Wells drilled since 2016 have a median depth of 115 ft.

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

Applying published per-foot rates to the local median depth of 115 ft: drilling and casing alone typically runs $2,875–$7,475; a complete system including pump, pressure tank, and hookup typically runs $6,900–$11,500. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in Madison County?

The median static water level is 24 ft below ground surface (middle half of wells: 14 ft–41 ft), from 3,772 measurements.

How much water do wells in Madison County produce?

The median tested yield is 25 gpm (middle half: 15 gpm–40 gpm), from 1,560 pump tests. A typical household needs 5–10 gpm.

Drilled depth distribution

0–50 ft 59 50–100 ft 1,484 100–150 ft 811 150–200 ft 202 200–300 ft 200 300–400 ft 76 400–600 ft 79 600+ ft 123
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Well records by ZIP code in Madison County

Median depth, water level, and yield for each ZIP code with recorded wells.

Method: medians computed from IDWR records (IDWR well records, excluding the 8,758 monitoring, injection, test, dewatering, cathodic-protection and heat-exchange wells that are not water supplies; depths 0-5,000 ft). Cost estimate applies published per-foot ranges (checked 2026-06-11) to the local median depth — full methodology & sources.