Well Drillers Near Mayville, Wisconsin

A geological estimate for the Mayville area.

Detailed Summary

In the Mayville region, the most typical subsurface profile begins with a significant thickness of unconsolidated clay (sometimes including gravel, stones, or soft sand), generally from ground surface to 30–90 feet—averaging ~55 ft. Below this, hard or silty clay sometimes grades into a weathered or broken dolomitic limestone (Limerock) layer, which transitions to more competent limestone/dolostone. From about 80 ft downward, most wells encounter alternating layers of limestone and shale. High-capacity or deeper wells may reach a deeper sequence of massive limestone, thick shale, then optionally down to sandstone below 600 ft. For residential wells (yielding 5–15+ GPM), total depths of 80–180 ft are typical, with water most commonly sourced from shallow limestone or shale fractures. Static water levels average between 40–60 feet below the surface.

Expected Geological Layers