Well Drillers Near La Crosse, Wisconsin

A geological estimate for the La Crosse area.

Detailed Summary

Based on representative well logs across La Crosse County, the most common stratigraphy begins with a thin layer of topsoil and/or clay, ranging roughly from the surface to 3-5 ft, often blending into a thicker silt or soft muck unit where present. This is consistently followed by a considerable zone of sand or sand & gravel, typically extending from near surface down to between 60-100 ft. In upland or bluff areas the sand/gravel may alternate with hard sandrock, poorly consolidated sand, or sandstone, with some wells reporting initial layers of shale rather than sand. Beneath the sand/gravel or sandstone, deeper wells (especially those exceeding 150 ft) encounter more competent sandstone, and sometimes further underlain by shale, hard shale, or limestone/crevice zones at 150-430 ft and beyond. Water supply comes almost exclusively from the sand/gravel or shallow sandstone. A typical residential well targeting 5-15+ GPM is completed at 60-100 ft within the sand/sandstone, while higher capacity or rural wells may reach 150-460 ft for increased production from sandstone or mixed rock aquifers.

Expected Geological Layers