Research and data
Each study is computed from the well logs drillers file with the state, downloaded from the state's own server. Every state uses the same code, names its file and limits, and comes with its county table as a CSV.
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Indiana well depth by county
The median Indiana well is 90 feet deep, from 414,947 logs in the Indiana Department of Natural Resources, Division of Water Water Well Record Database (IDNR Water Well Locations layer). Every county with 30 or more logs.
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Iowa well depth by county
The median Iowa well is 203 feet deep, from 15,039 logs in the Iowa Department of Natural Resources Private Well Tracking System (Private Well Facilities layer). Every county with 30 or more logs.
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Michigan well depth by county
The median Michigan well is 94 feet deep, from 1,082,337 logs in the Michigan Department of Environment, Great Lakes, and Energy (EGLE) Wellogic statewide water well database (Michigan Wellogic Wells open data layer). Every county with 30 or more logs.
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Ohio well depth by county
The median Ohio well is 110 feet deep, from 168,404 logs in the Ohio Department of Natural Resources Water Wells layer (well log database, located wells). Every county with 30 or more logs.
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Oklahoma well depth by county
The median Oklahoma well is 160 feet deep, from 93,531 logs in the Oklahoma Water Resources Board Groundwater Wells layer (multipurpose well completion reports). Every county with 30 or more logs.
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Tennessee well depth by county
The median Tennessee well is 163 feet deep, from 219,129 logs in the Tennessee Department of Environment and Conservation Water Well Locations (public), water well database. Every county with 30 or more logs.
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Texas well depth by county
The median Texas well is 250 feet deep, from 290,655 logs in the Texas Water Development Board Submitted Driller's Reports (SDR) database. Every county with 30 or more logs.
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Wisconsin well depth by county
The median Wisconsin well is 120 feet deep, from 485,513 logs in the Wisconsin Department of Natural Resources Well Inventory (Groundwater Retrieval Network), well construction reports. Every county with 30 or more logs.
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Every study names its sources and method and links a CSV of its table. Reuse it with a credit and a link to the study. Each study page has a "How to cite this" line. Questions: editor@wellsnear.com.