⟁ Idaho Well Data field records · 2026 survey

Idaho Well Data › Cassia County

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

✓ 5,708 IDWR records · verified 2026-10-12

240 ftmedian well depth
91 ft–450 fttypical depth range
94 ftmedian static water level
25 gpmmedian yield (2,813 tests)

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How deep are wells in Cassia County, Idaho?

The median drilled well depth in Cassia County is 240 ft, based on 4,366 wells with recorded depths in the state IDWR database. Half of all wells fall between 91 ft and 450 ft; 90% are shallower than 700 ft. Wells drilled since 2016 have a median depth of 258 ft.

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

Applying published per-foot rates to the local median depth of 258 ft: drilling and casing alone typically runs $6,450–$16,770; a complete system including pump, pressure tank, and hookup typically runs $15,480–$25,800. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in Cassia County?

The median static water level is 94 ft below ground surface (middle half of wells: 31 ft–213 ft), from 5,274 measurements.

How much water do wells in Cassia County produce?

The median tested yield is 25 gpm (middle half: 17 gpm–32 gpm), from 2,813 pump tests. A typical household needs 5–10 gpm.

Drilled depth distribution

0–50 ft 160 50–100 ft 1,002 100–150 ft 367 150–200 ft 268 200–300 ft 743 300–400 ft 421 400–600 ft 741 600+ ft 664
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Well records by ZIP code in Cassia 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.