Municipal Separate Storm Sewer System (MS4)

This data layer displays the publicly owned or operated stormwater infrastructure as part of the Municipal Separate Storm Sewer System (MS4). It was created by the Minnesota Pollution Control Agency. Infrastructure may include curbs, ditches, culverts, stormwater retention ponds, and storm sewer pipes and is used solely for stormwater. The location and information regarding MS4s can assist with research and decision-making in relation to stormwater management.