Environment

Olmsted County works to preserve existing natural areas and wildlife, promote sound policies, educational and discussion opportunities.

Decorah Edge

The “Decorah Edge” is defined as the area in which the Decorah, Platteville, or Glenwood formation is the first encountered bedrock according to the “Bedrock Geology: Steele, Dodge, Olmsted and Winona Counties” data plate produced by the Minnesota Geological Survey – University of Minnesota in 2004, as modified by field investigation or more precise mapping; and having a depth to bedrock of less than twenty-five feet according to the “Depth to Bedrock: Steele, Dodge, Olmsted and Winona Counties” data plate produced by the Minnesota Geological Survey – University of Minnesota in 2004, as modified by field investigation, reliable well logs, or more precise mapping; and for which there are contiguous adjacent areas with the Cummingsville or higher formations as the first encountered bedrock.

City of Rochester Decorah Edge Features Map

City of Rochester Decorah Edge Map Showing Hydric Soils and Cummingsville Formation

Section 9.20 Decorah Edge Overlay District

Olmsted County Wetland Conservation Ordinance