⟁ South Dakota Well Data field records · 2026 survey

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Thein Well Company, Inc.

Recorded as the driller on 942 water wells across 35South Dakotacounties in the South Dakota DANR well completion report database (NR68), most in Brookings County. Well-log records span 1990–2025.

942wells on record
132since 2022
35counties served
125 ftmedian depth

Counties served

Wells drilled by Thein Well Company, Inc., by county, across the full record.

CountyWells drilled
Brookings County104
Bon Homme County89
Yankton County78
Minnehaha County67
Codington County62
Hamlin County61
Union County55
Lincoln County55
Turner County52
Brown County47
Lake County34
Clay County32
Show all 35counties
Hutchinson County32
Kingsbury County20
Clark County19
Davison County17
Deuel County17
Grant County17
Charles Mix County16
Moody County15
Marshall County10
Douglas County9
Mccook County8
Beadle County6
Spink County4
Hand County3
Roberts County3
Miner County2
Haakon County2
Todd County1
Gregory County1
Hanson County1
Pennington County1
Hughes County1
Hyde County1

Well characteristics

Across the wells Thein Well Company, Inc. has drilled, the median depth is 125 ft (middle half 47 ft–240 ft), median tested yield —, and median static water level 51 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.

Original drilling logs

Recent well logs filed by Thein Well Company, Inc., straight from the public SD DANR record:

"Records span 1990–2025" 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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