Well Drillers Near Schofield, Wisconsin

A geological estimate for the Schofield area.

Detailed Summary

Wells in the Schofield region of Marathon County, Wisconsin, commonly encounter an upper layer of sand and gravel and/or clay, typically extending from the surface down to around 40–55 feet. Below this lies a transition zone of weathered or decomposed granite, sometimes sandy or clayey, with competent hard granite bedrock present by approximately 70–100 feet and extending to typical total depths of 100 to over 200 feet, depending on well yield and site-specific demand. Residential wells are commonly cased through the unconsolidated material and transition zone, terminating their casing in the upper part of the granite or just below, with well screens set where sand and gravel are water-bearing. Static water levels tend to be between 10 and 35 feet below surface, with 5–15 GPM being achievable in wells approximately 80–120 feet deep, and higher capacities requiring deeper construction into the granite.

Expected Geological Layers