Well Drillers Near Oak Creek, Wisconsin

A geological estimate for the Oak Creek area.

Detailed Summary

A representative geologic profile for Oak Creek and adjacent areas indicates a surface layer of clay (sometimes with silt, brown/blue color, and/or hardpan) averaging 45–70 feet thick. This is underlain by sand, gravel, or sandy gravel units—commonly water-bearing—spanning 10–20 feet in thickness. In some locations, discontinuous clay or hardpan layers occur within or above the sand/gravel. Below 70–120 feet, Silurian or Ordovician limestone/dolomite is encountered. Deeper municipal or high-capacity wells may penetrate additional sequences of shale and dolomite, reaching several hundred to >1000 feet into Cambrian/Ordovician sandstones. Most residential wells with 5–15+ GPM yields are screened or open in the sand/gravel aquifers or upper dolomite, at total depths of 65–180 feet, with static water levels around 40–98 feet bgs.

Expected Geological Layers