Well Drillers Near Iron Mountain, Michigan

A geological estimate for the Iron Mountain area.

Detailed Summary

Based on well logs from Iron Mountain and adjacent areas, the representative stratigraphic sequence is: a surficial layer of sand or sand with gravel (frequently with hardpan or clay components, caving), found to depths of ~35-82 feet; a transition through layered clays and/or sandy clay often 5-25 feet thick; then underlying bedrock usually described as fractured or broken gray/black slate, with water-bearing features (sometimes granite or quartzite, or a mix of fractured shales and slates), commonly extending below 100 feet and forming a major aquifer zone. Well completions usually involve 6-inch steel casing set into competent bedrock, with grouting generally using bentonite or cement to ~35-82 feet. The static water level typically falls between 18-80 feet below grade. Residential wells (targeting 5-15+ GPM) generally reach 65-130 feet, while higher capacity or harder bedrock wells may reach 200-250 feet or more.

Expected Geological Layers