Well Drillers Near Ironwood, Michigan

A geological estimate for the Ironwood area.

Detailed Summary

Based on synthesis of sampled well logs in the Ironwood and adjacent Bessemer region, the most representative geologic profile begins at the surface with a 20-35 ft sequence of sand, gravel, and/or clay (sometimes with boulders). This is followed by a transition zone (variable mixtures of sand, clay, and gravel, up to about 40-60 ft), then a sharp transition to granite or crystalline bedrock, which persists to the bottom of most wells. Bedrock is most frequently encountered between 24 and 62 feet. Clay or gravel is the most common unconsolidated overburden; little silt or peat is reported. Static water levels are typically shallow (1-35 ft), and residential yields of 5-15+ GPM can be obtained in wells completed 150-220 ft into bedrock. High-capacity or public wells may be drilled deeper (up to 450+ ft) into granite or other crystalline rock. Drilling is typically rotary with steel casing set to bedrock. Grout (cement or bentonite) is installed in the overburden. The formation sequence appears highly consistent across most logs, with only minor local variations.

Expected Geological Layers