⟁ Iowa Well Data field records · 2026 survey

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* Unknown, -

Recorded as the driller on 97,406 water wells across 99Iowacounties in the Iowa DNR Well Information System (IWIS), most in Polk County. Well-log records span 1850–2026.

97,406wells on record
159since 2022
99counties served
100 ftmedian depth

Counties served

Wells drilled by * Unknown, -, by county, across the full record.

CountyWells drilled
Polk County2,143
Delaware County2,122
Fayette County1,953
Cerro Gordo County1,895
Johnson County1,893
Webster County1,891
Jasper County1,845
Black Hawk County1,688
Lee County1,679
Dubuque County1,656
Winneshiek County1,650
Clayton County1,629
Show all 99counties
Clinton County1,581
Kossuth County1,562
Washington County1,540
Bremer County1,532
Story County1,515
Buchanan County1,397
Carroll County1,384
Woodbury County1,375
Chickasaw County1,322
Linn County1,313
Calhoun County1,291
Jones County1,272
Tama County1,262
Howard County1,234
Scott County1,225
Shelby County1,222
Des Moines County1,188
Floyd County1,155
Hamilton County1,155
Plymouth County1,120
Butler County1,118
Muscatine County1,105
Henry County1,087
Pottawattamie County1,082
Cedar County1,077
Mitchell County1,050
Pocahontas County1,027
Allamakee County1,019
Buena Vista County1,014
Jackson County1,000
Warren County967
Guthrie County953
Franklin County939
Hancock County914
Wayne County910
Harrison County907
Palo Alto County899
Mahaska County898
Crawford County897
Sac County893
Ida County869
Cass County868
Iowa County857
Dallas County856
Mills County849
Appanoose County840
Page County840
Sioux County828
Poweshiek County802
Benton County792
Audubon County770
Greene County757
Wright County751
Marion County746
Worth County746
Hardin County739
Lucas County730
Clay County723
Winnebago County720
Lyon County696
Grundy County690
Humboldt County681
Louisa County677
Monroe County661
Van Buren County642
Cherokee County640
Osceola County610
Dickinson County609
Davis County559
Adair County540
Boone County531
Clarke County520
Union County514
Keokuk County508
Monona County505
O'Brien County492
Madison County469
Taylor County456
Marshall County435
Wapello County379
Fremont County372
Emmet County357
Decatur County335
Montgomery County327
Jefferson County325
Adams County194
Ringgold County154

Well characteristics

Across the wells * Unknown, - has drilled, the median depth is 100 ft (middle half 33 ft–180 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 * Unknown, -, straight from the public Iowa DNR record:

"Records span 1850–2026" refers to the earliest and latest well logs attributed to this company in the Iowa DNR database — the state digitized older paper logs, so the first date is the oldest record on file, not necessarily the company's founding year.

Need a well drilled in Polk County?

Free. Goes to licensed drillers working Polk County, including * Unknown, -.

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This page is built from the public Iowa DNR well-log record and helps property owners find a driller. Claim it (free) to confirm the details are right and give customers a way to reach you.

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This directory helps property owners find a driller, using public Iowa DNR records. Claim your page to confirm the details are accurate and give customers a way to reach you. Free — reviewed before anything goes live.