Well Drillers Near Mendon, Michigan

A geological estimate for the Mendon area.

Detailed Summary

A representative geologic column for the Mendon region (St. Joseph County, MI and immediately adjacent) shows that most residential wells encounter an upper sequence of brown sand and clay to ~10-15 ft, followed by alternating sand, gravel, and clay layers. A persistent fine-to-coarse sand and gravel aquifer is most often tapped from approximately 20–45 ft, with deeper wells encountering additional sand and gravel, fine sand, and occasional gray to brown clay beds down to 80–88 ft. Clay and mixed layers are commonly reported as lenses interbedded in the sand and gravel. Static water levels are usually 8–15 ft. below grade. Most wells use rotary/mud circulation (or cable tool) with PVC or steel casing, grouted with bentonite. Typical residential yields are 10–30 GPM, with high capacity wells (e.g., 50 GPM test) in coarser sand/gravel zones below 50 ft.

Expected Geological Layers