Well Drillers Near Allendale, Michigan

A geological estimate for the Allendale area.

Detailed Summary

A representative geological profile for Allendale and nearby Ottawa County areas, based on sampled well logs, generally begins with a surficial sand or sand-with-clay/gravel unit (10–30 ft), followed by a substantial clay or clay with layers of sand or gravel (80–130 ft total). Some wells encounter interbedded sand or sand/gravel below this (down to 150–175 ft). The reliable high-yield aquifer is most often a sandstone or sand/bedrock layer beginning near 150–180 ft and extending as deep as the wells were drilled, sometimes >200 ft. Most residential wells tap shallower sand aquifers (~40–80 ft), but notable numbers are completed in deeper sandstone for either higher flow or in areas where shallow sand yields are insufficient.

Expected Geological Layers