South Dakota Well Data › Custer County

Custer County, South Dakota: well depth, water level & drilling cost

Name: Custer County, South Dakota water well statistics
Creator: South Dakota Well Data
License: https://creativecommons.org/licenses/by/4.0/

✓ 2,675 SD DANR records · verified 2026-08-24

210 ftmedian well depth

125 ft–350 fttypical depth range

50 ftmedian static water level

280 ftmedian depth since 2016

How deep are wells in Custer County, South Dakota?

The median drilled well depth in Custer County is 210 ft, based on 2,673 wells with recorded depths in the state SD DANR database. Half of all wells fall between 125 ft and 350 ft; 90% are shallower than 500 ft. Wells drilled since 2016 have a median depth of 280 ft.

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

Applying published per-foot rates to the local median depth of 280 ft: drilling and casing alone typically runs $7,000–$18,200; a complete system including pump, pressure tank, and hookup typically runs $16,800–$28,000. Actual quotes depend on site access, geology, and casing requirements.

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Drilled depth distribution

0–50 ft 171 50–100 ft 177 100–150 ft 460 150–200 ft 358 200–300 ft 596 300–400 ft 393 400–600 ft 337 600+ ft 181

Who drills wells in Custer County?

Companies by number of wells completed in this county, per the completion reports South Dakota drillers file with DANR.

Driller	Wells since 2016
ALEXANDER DRILLING, INC.	209
J & M DRILLING	108
HOWE WELL DRILLING & EXCAVATING, INC.	84
TAYLOR DRILLING COMPANY	20
DENNIS V. JOHNSON DBA DBJ DRILLING LLC	14
DAKOTA BICE DRILLING, LLC.	13
AUTHENTIC DRILLING LLC	6
VENEKAMP DRILLING	5

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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). Cost estimate applies published per-foot ranges (checked 2026-06-11) to the local median depth — full methodology & sources.