⟁ Idaho Well Data field records · 2026 survey

Idaho Well Data › Cassia County

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

✓ 5,557 IDWR records · verified 2026-08-21

238 ftmedian well depth
90 ft–448 fttypical depth range
93 ftmedian static water level
25 gpmmedian yield (2,736 tests)

How deep are wells in Cassia County, Idaho?

The median drilled well depth in Cassia County is 238 ft, based on 4,225 wells with recorded depths in the state IDWR database. Half of all wells fall between 90 ft and 448 ft; 90% are shallower than 700 ft. Wells drilled since 2016 have a median depth of 250 ft.

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

Applying published per-foot rates to the local median depth of 250 ft: drilling and casing alone typically runs $6,250–$16,250; a complete system including pump, pressure tank, and hookup typically runs $15,000–$25,000. Actual quotes depend on site access, geology, and casing requirements.

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What is the static water level in Cassia County?

The median static water level is 93 ft below ground surface (middle half of wells: 31 ft–212 ft), from 5,132 measurements.

How much water do wells in Cassia County produce?

The median tested yield is 25 gpm (middle half: 17 gpm–32 gpm), from 2,736 pump tests. A typical household needs 5–10 gpm.

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Drilled depth distribution

0–50 ft 154 50–100 ft 980 100–150 ft 352 150–200 ft 262 200–300 ft 718 300–400 ft 409 400–600 ft 716 600+ ft 634
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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.