Idaho Well Data › Twin Falls County
Twin Falls County, Idaho: well depth, water level & drilling cost
✓ 9,275 IDWR records · verified 2026-10-12
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How deep are wells in Twin Falls County, Idaho?
The median drilled well depth in Twin Falls County is 185 ft, based on 6,958 wells with recorded depths in the state IDWR database. Half of all wells fall between 123 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.
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 8,493 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 1,854 pump tests. A typical household needs 5–10 gpm.
Drilled depth distribution
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Well records by ZIP code in Twin Falls County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Filer (83328) — 1,902 wells, median 165 ft
- Kimberly (83341) — 1,709 wells, median 260 ft
- Buhl (83316) — 1,578 wells, median 145 ft
- Twin Falls (83303) — 1,431 wells, median 168 ft
- Twin Falls (83301) — 1,212 wells, median 145 ft
- Murtaugh (83344) — 694 wells, median 493 ft
- Castleford (83321) — 423 wells, median 255 ft
- Hansen (83334) — 310 wells, median 340 ft
- Rogerson (83302) — 224 wells, median 405 ft
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.