⟁ Idaho Well Data field records · 2026 survey

Idaho Well Data › Twin Falls County

Twin Falls County, Idaho: well depth, water level & drilling cost

✓ 9,011 IDWR records · verified 2026-08-21

185 ftmedian well depth
122 ft–300 fttypical depth range
80 ftmedian static water level
27 gpmmedian yield (1,797 tests)

How deep are wells in Twin Falls County, Idaho?

The median drilled well depth in Twin Falls County is 185 ft, based on 6,740 wells with recorded depths in the state IDWR database. Half of all wells fall between 122 ft and 300 ft; 90% are shallower than 480 ft. Wells drilled since 2016 have a median depth of 225 ft.

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

Applying published per-foot rates to the local median depth of 225 ft: drilling and casing alone typically runs $5,625–$14,625; a complete system including pump, pressure tank, and hookup typically runs $13,500–$22,500. Actual quotes depend on site access, geology, and casing requirements.

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What is the static water level in Twin Falls County?

The median static water level is 80 ft below ground surface (middle half of wells: 38 ft–155 ft), from 8,262 measurements.

How much water do wells in Twin Falls County produce?

The median tested yield is 27 gpm (middle half: 20 gpm–45 gpm), from 1,797 pump tests. A typical household needs 5–10 gpm.

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Drilled depth distribution

0–50 ft 118 50–100 ft 824 100–150 ft 1,369 150–200 ft 1,136 200–300 ft 1,561 300–400 ft 805 400–600 ft 494 600+ ft 433
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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.