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Well Drillers Near Genoa, Wisconsin

The typical Genoa regional well profile consists of a thin topsoil/clay layer, underlain by a thick sequence of shale (sometimes subdivided into soft and hard), with occasional presence of limestone, and typically terminates in sandstone or remains within shale at greater depths.

Showing contractors within 60 miles of Genoa. 22 results found.

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A geological estimate for the Genoa area.

110 ft

Typical Well Depth

70 ft

Static Water Level

Rotary - Mud Circulation

Recommended Method

Detailed Summary

Based on synthesis of sampled well logs, the most representative geologic profile in the Genoa, WI region features: an initial 3-10 ft of topsoil/dirt/clay, followed by 10-100+ ft of soft to hard shale. In various logs, there may be intermittent limestone or limerock with crevices, and in some cases, a basal sandstone or sandrock. The typical residential well accessing 10+ GPM is cased to ~100-120 ft and completed in the upper shale or underlying limestone or sandstone where present. High-capacity wells may penetrate much deeper into shale or limestone layers. Static water levels range from 35-90 ft below surface. Most wells employ rotary mud drilling and are sealed with neat cement grout.

Expected Geological Layers

Depth (Feet)Formation TypeDescriptionCharacteristics
0 – 5 ftTopsoil/ClayBrown-black clay or topsoil, loose, with some silt/gravel locally.Color: Brown-black
Hardness: Soft
5 – 40 ftClay & Loose Rock / Soft ShalePlastic clay with some loose rock fragments; grades to soft shale; locally gritty.Color: Gray to green
Hardness: Soft
40 – 110 ftShale (Soft to Hard)Shale, sometimes subdivided as soft upper section and hard lower section; often tan, gray, or green, locally with calcareous seams.Color: Gray-green-tan
Hardness: Firm to hard
110 – 140 ftSandstone or LimestoneInterval may be thin sandstone (white) or limestone (limerock), commonly classified as water-bearing in deeper wells. Local variation: sometimes limestone is extensive, other times sandstone dominates.Color: White to light gray (sandstone); gray (limestone)
Hardness: Hard
140 – 300 ftHard Shale or Limerock (deep)Continued hard shale, or where present, limestone beds with potential for water production; occurs mainly in high-capacity well settings.Color: Gray-brown
Hardness: Hard