Completed Aggregate Maps

Aggregate resources evaluations have been completed on the following counties:


* The Metropolitan Area was mapped by the Minnesota Geological Survey and Metropolitan Council. More information on Twin Cities Aggregate Resources. To order the printed map, M-102 (1999, 2 plates on 4 sheets) contact the Minnesota Geological Survey, 612-627-4780 . Digital map and data files are available at

Since this is a reconnaissance-level survey, site-specific evaluations are still necessary prior to any development of the resources, especially in regards to aggregate quality or environmental review. Factors such as ownership, zoning, protected waters and wetlands, environmental permitting, and other individual site characteristics are not part of the geologic resource assessment.

Each county passes a County Board Resolution indicating an interest for the work to be completed. To obtain more information about how to request an Aggregate Resource Assessment for your county, please contact Dennis Martin.

Clay Itasca Dodge Blue Earth Nicollet Meeker Seven County Metro Kanabec Le Sueur Olmsted Aitkin Carlton Chisago Isanti Renville Wright Sherburne Benton Mille_Lacs Portions of St. Louis and Lake Stearns