How many wells has Graf Drilling drilled in South Dakota?

Graf Drilling appears as the driller of record on 381 wells in the South Dakota DANR well completion report database (NR68), spanning records from 1972 to 2010.

What counties does Graf Drilling work in?

Across the record, Graf Drilling has drilled wells in 7 South Dakota counties: Lawrence (147), Butte (142), Meade (41), Harding (38), Pennington (9), Custer (3), Fall River (1).

How deep are the wells Graf Drilling drills?

The median depth of a well drilled by Graf Drilling is 340 ft, with the middle half between 180 ft and 600 ft — based on 381 of their wells with recorded depths.

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Graf Drilling

Recorded as the driller on 381 water wells across 7 South Dakota counties in the South Dakota DANR well completion report database (NR68), most in Lawrence County. Well-log records span 1972–2010.

381wells on record

—since 2022

7counties served

340 ftmedian depth

Counties served

Wells drilled by Graf Drilling, by county, across the full record.

County	Wells drilled
Lawrence County	147
Butte County	142
Meade County	41
Harding County	38
Pennington County	9
Custer County	3
Fall River County	1

Well characteristics

Across the wells Graf Drilling has drilled, the median depth is 340 ft (middle half 180 ft–600 ft), median tested yield —, and median static water level — below ground surface. These summarize the company's own filed logs, not a marketing claim.

Original drilling logs

Recent well logs filed by Graf Drilling, straight from the public SD DANR record:

"Records span 1972–2010" refers to the earliest and latest well logs attributed to this company in the SD DANR database — the state digitized older paper logs, so the first date is the oldest record on file, not necessarily the company's founding year.

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