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Well Drillers Near Oconto Falls, Wisconsin

Typical Oconto Falls area wells encounter sand, clay (often with gravel), and alternating limestone/dolomite and sandstone strata, with bedrock generally reached between 60 and 100 feet. Residential wells are usually completed to 80–120 feet for reliable yields around 10–30 GPM.

Showing contractors within 60 miles of Oconto Falls. 29 results found.

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A geological estimate for the Oconto Falls area.

110 ft

Typical Well Depth

20 ft

Static Water Level

Rotary - Mud Circulation

Recommended Method

Detailed Summary

Based on representative well log data for the Oconto Falls, WI region, the average stratigraphy is characterized by an initial sand or sandy clay zone (surface to ~15 ft), succeeded by a thick sequence of clay (often with gravel and/or stones, ~15–65 ft). This is underlain by alternating layers of limestone/dolomite and sandstone (typically from ~65–120 ft, sometimes deeper). In some wells, hardpan or gravel layers occur at the base of the drift. Wells typically are cased through overburden and into the uppermost bedrock, with the limestone/dolomite and sandstone units providing the primary aquifers. High-yield residential wells are customarily drilled to 90–120 ft, reaching the main limestone/dolomite aquifer, while high-capacity wells may reach depths of 150–200 ft. The static water level is most commonly between 10 and 40 ft below surface.

Expected Geological Layers

Depth (Feet)Formation TypeDescriptionCharacteristics
0 – 15 ftSand/Sandy ClayFine to medium sand, sometimes mixed with clay; uppermost glacial driftColor: Light tan to brown
Hardness: Loose to firm
15 – 65 ftClay with Gravel/StonesDense clay with variable gravel, stones, and occasional sand lenses; major confining layerColor: Brown to gray
Hardness: Hard, compact
65 – 80 ftLimestone/DolomiteGrey to tan, dense limestone or dolomite; lower glacial drift/upper bedrock contactColor: Gray to tan
Hardness: Hard
80 – 100 ftSandstoneFine to medium sandstone; water-bearing aquiferColor: Tan to buff
Hardness: Medium
100 – 120 ftLimestone/DolomiteDense, fractured limestone/dolomite; main aquifer for wells below 100 ftColor: Light gray
Hardness: Hard