Well Drillers Near Rudolph, Wisconsin

A geological estimate for the Rudolph area.

Detailed Summary

Most wells in the Rudolph region encounter a surficial layer of sand, sandy clay, or sand with gravel to depths averaging 6 to 10 ft, sometimes up to 30 ft or a bit more. Some areas also display thin interbeds or lenses of blue/gray/soft clay or shale up to about 20 ft but typically not everywhere. Below these unconsolidated or weathered materials, granite bedrock is strongly predominant, generally beginning just below 10 to 30 ft and extending beyond 100 ft, with some wells drilled in granite as deep as 180–240+ ft. Soft or weathered granite is often noted initially, grading into harder granitic material with depth. Sandstone and shale can occur as minor, discontinuous beds above granite in certain pockets, but are not regionally dominant layers. Residential wells are most commonly constructed to penetrate at least 30–40 ft into granite, with total depths often ranging from 90–120 ft (bedrock wells) or 30–35 ft for unconsolidated sand/gravel wells with high yields. Static water levels are generally 8–18 ft below grade. Typical residential well depth for reliable 5–15+ GPM is 90–120 ft (bedrock wells), with high capacity wells extending beyond 180 ft if needed.

Expected Geological Layers