Resources Activity Stream About Order by Relevance Name Ascending Name Descending Last Modified Go 1 resource found Organizations: Pollution Control Agency Tags: storm water Filter Results Municipal Separate Storm Sewer System (MS4) boundaries in Minnesota In general terms, MS4s are publicly owned or operated stormwater infrastructure, used solely for stormwater, and which are not part of a publicly owned wastewater treatment... JPEG SHP fgdb gpkg HTML