⟁ Idaho Well Data field records · 2026 survey

Idaho Well Data › Lewis County

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

✓ 592 IDWR records · verified 2026-08-21

320 ftmedian well depth
200 ft–500 fttypical depth range
120 ftmedian static water level
15 gpmmedian yield (510 tests)

How deep are wells in Lewis County, Idaho?

The median drilled well depth in Lewis County is 320 ft, based on 385 wells with recorded depths in the state IDWR database. Half of all wells fall between 200 ft and 500 ft; 90% are shallower than 678 ft. Wells drilled since 2016 have a median depth of 360 ft.

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

Applying published per-foot rates to the local median depth of 360 ft: drilling and casing alone typically runs $9,000–$23,400; a complete system including pump, pressure tank, and hookup typically runs $21,600–$36,000. Actual quotes depend on site access, geology, and casing requirements.

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What is the static water level in Lewis County?

The median static water level is 120 ft below ground surface (middle half of wells: 55 ft–260 ft), from 538 measurements.

How much water do wells in Lewis County produce?

The median tested yield is 15 gpm (middle half: 8 gpm–25 gpm), from 510 pump tests. A typical household needs 5–10 gpm.

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Drilled depth distribution

0–50 ft 2 50–100 ft 9 100–150 ft 36 150–200 ft 42 200–300 ft 83 300–400 ft 59 400–600 ft 90 600+ ft 64
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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.