⟁ Idaho Well Data field records · 2026 survey

Idaho Well Data › Jefferson County

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

✓ 8,251 IDWR records · verified 2026-10-12

120 ftmedian well depth
98 ft–158 fttypical depth range
43 ftmedian static water level
20 gpmmedian yield (2,701 tests)

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How deep are wells in Jefferson County, Idaho?

The median drilled well depth in Jefferson County is 120 ft, based on 6,635 wells with recorded depths in the state IDWR database. Half of all wells fall between 98 ft and 158 ft; 90% are shallower than 260 ft. Wells drilled since 2016 have a median depth of 140 ft.

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

Applying published per-foot rates to the local median depth of 140 ft: drilling and casing alone typically runs $3,500–$9,100; a complete system including pump, pressure tank, and hookup typically runs $8,400–$14,000. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in Jefferson County?

The median static water level is 43 ft below ground surface (middle half of wells: 19 ft–78 ft), from 7,878 measurements.

How much water do wells in Jefferson County produce?

The median tested yield is 20 gpm (middle half: 5 gpm–35 gpm), from 2,701 pump tests. A typical household needs 5–10 gpm.

Drilled depth distribution

0–50 ft 253 50–100 ft 1,665 100–150 ft 2,809 150–200 ft 843 200–300 ft 533 300–400 ft 307 400–600 ft 175 600+ ft 50
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Well records by ZIP code in Jefferson 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.