⟁ South Dakota Well Data field records · 2026 survey

South Dakota Well Data › Lawrence County › Spearfish (57799)

Spearfish, SD (57799): well depth, water level & drilling cost

✓ 589 SD DANR records · Lawrence County

298 ftmedian well depth
105 ft–500 fttypical depth range
125 ftmedian static water level
—median yield (— tests)

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How deep are wells in and around Spearfish (57799), South Dakota?

The median drilled well depth in and around Spearfish (57799) is 298 ft, based on 589 wells with recorded depths in the state SD DANR database. Half fall between 105 ft and 500 ft; 90% are shallower than 825 ft.

How much does it cost to drill a well in and around Spearfish (57799)?

Applying published per-foot rates to the local median depth of 298 ft: drilling and casing alone typically runs $7,450–$19,370; a complete system including pump, pressure tank, and hookup typically runs $17,880–$29,800. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around Spearfish (57799)?

The median static water level is 125 ft below ground surface (middle half of wells: 55 ft–198 ft), from 57 measurements.

Drilled depth distribution

0–50 ft 59 50–100 ft 80 100–150 ft 27 150–200 ft 19 200–300 ft 110 300–400 ft 87 400–600 ft 88 600+ ft 119
Looking at a specific property in Spearfish (57799)?

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Part of Lawrence County well records.

Method: medians computed from SD DANR records (SD DANR NR68 well completion reports, water wells only (monitoring, test-hole, geothermal-loop and dewatering records excluded); depths 0-5,000 ft), grouped by ZIP from the recorded address. Cost estimate applies published per-foot ranges to the local median depth — full methodology & sources.