Depth to Bedrock – State

This data layer depicts the depth to bedrock (thickness of Quaternary glacial sediments) in feet of Minnesota. It was developed by the Minnesota Geological Survey. The thickness of the sediment covering the bedrock affects the distribution and character of groundwater, surface water, organisms, and natural processes. Counties updated in the 2025 version are Dakota, Lincoln, Pipestone, Lac Qui Parle and Yellow Medicine.