Well Drillers Near Carp Lake, Michigan

A geological estimate for the Carp Lake area.

Detailed Summary

Analysis of multiple well logs from Carp Lake and surrounding sections shows that most wells encounter an upper sequence of sand and gravel (median 20–35 ft), followed by intermittent clay and hardpan (variable, often 15–50 ft combined), with a consistently productive sand or sand/gravel aquifer forming the lowermost used section (commonly from 55–115 ft, extending deeper in some wells). The most productive residential wells target these lower sand and gravel units, with average static water levels of 1–25 ft below grade and yields from 10 to 40 GPM. Nearly all wells are constructed by rotary drilling, grouted with bentonite, and use PVC casing set through most of the soft overburden. Caving or color is not systematically reported, but sand is often described as medium-to-coarse and nearly all clay units are red or sandy. For deeper, higher-capacity supply, wells may be extended below 120 ft to access thicker sand, gravel, or – rarely – a consolidated bedrock unit (shale, limestone) at >170 ft.

Expected Geological Layers