⟁ Idaho Well Data field records · 2026 survey

Idaho Well Data › Gem County

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

✓ 4,636 IDWR records · verified 2026-08-21

85 ftmedian well depth
45 ft–142 fttypical depth range
23 ftmedian static water level
30 gpmmedian yield (3,753 tests)

How deep are wells in Gem County, Idaho?

The median drilled well depth in Gem County is 85 ft, based on 3,354 wells with recorded depths in the state IDWR database. Half of all wells fall between 45 ft and 142 ft; 90% are shallower than 241 ft. Wells drilled since 2016 have a median depth of 104 ft.

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

Applying published per-foot rates to the local median depth of 104 ft: drilling and casing alone typically runs $2,600–$6,760; a complete system including pump, pressure tank, and hookup typically runs $6,240–$10,400. Actual quotes depend on site access, geology, and casing requirements.

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What is the static water level in Gem County?

The median static water level is 23 ft below ground surface (middle half of wells: 8 ft–57 ft), from 4,288 measurements.

How much water do wells in Gem County produce?

The median tested yield is 30 gpm (middle half: 20 gpm–50 gpm), from 3,753 pump tests. A typical household needs 5–10 gpm.

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Drilled depth distribution

0–50 ft 903 50–100 ft 999 100–150 ft 662 150–200 ft 278 200–300 ft 290 300–400 ft 122 400–600 ft 82 600+ ft 18
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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.