⟁ Idaho Well Data field records · 2026 survey

Idaho Well Data › Gem County

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

✓ 4,724 IDWR records · verified 2026-10-12

85 ftmedian well depth
45 ft–143 fttypical depth range
23 ftmedian static water level
30 gpmmedian yield (3,828 tests)

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How deep are wells in Gem County, Idaho?

The median drilled well depth in Gem County is 85 ft, based on 3,439 wells with recorded depths in the state IDWR database. Half of all wells fall between 45 ft and 143 ft; 90% are shallower than 240 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.

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–58 ft), from 4,374 measurements.

How much water do wells in Gem County produce?

The median tested yield is 30 gpm (middle half: 20 gpm–50 gpm), from 3,828 pump tests. A typical household needs 5–10 gpm.

Drilled depth distribution

0–50 ft 922 50–100 ft 1,018 100–150 ft 684 150–200 ft 284 200–300 ft 304 300–400 ft 124 400–600 ft 85 600+ ft 18
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Well records by ZIP code in Gem 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.