South Dakota Well Data › Pennington County

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

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

✓ 4,265 SD DANR records · verified 2026-10-19

115 ftmedian well depth

35 ft–301 fttypical depth range

55 ftmedian static water level

205 ftmedian depth since 2016

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How deep are wells in Pennington County, South Dakota?

The median drilled well depth in Pennington County is 115 ft, based on 4,256 wells with recorded depths in the state SD DANR database. Half of all wells fall between 35 ft and 301 ft; 90% are shallower than 635 ft. Wells drilled since 2016 have a median depth of 205 ft.

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

Applying published per-foot rates to the local median depth of 205 ft: drilling and casing alone typically runs $5,125–$13,325; a complete system including pump, pressure tank, and hookup typically runs $12,300–$20,500. Actual quotes depend on site access, geology, and casing requirements.

Drilled depth distribution

0–50 ft 1,502 50–100 ft 443 100–150 ft 433 150–200 ft 250 200–300 ft 491 300–400 ft 315 400–600 ft 345 600+ ft 477

Who drills wells in Pennington 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.	241
TAYLOR DRILLING COMPANY	62
HAMM DRILLING	42
DAKOTA BICE DRILLING, LLC.	40
VENEKAMP DRILLING	40
AMERICAN ENGINEERING TESTING,INC.	24
RAPID DRILLING LLC	23
DENNIS V. JOHNSON DBA DBJ DRILLING LLC	20

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Well records by ZIP code in Pennington County

Median depth, water level, and yield for each ZIP code with recorded wells.

Hill City (57745) — 1,077 wells, median 185 ft
Rapid City (57709) — 668 wells, median 225 ft
Rapid City (57703) — 655 wells, median 30 ft
Rapid City (57702) — 433 wells, median 358 ft
Keystone (57751) — 426 wells, median 240 ft
Box Elder (57719) — 235 wells, median 35 ft
Rapid City (57701) — 202 wells, median 284 ft
New Underwood (57761) — 135 wells, median 40 ft
Wall (57790) — 112 wells, median 22 ft
Caputa (57725) — 109 wells, median 40 ft
Quinn (57775) — 76 wells, median 60 ft
Owanka (57767) — 58 wells, median 40 ft

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.