Storm Water Management
The Municipal Separate Storm Sewer System (MS4) permit was created by the Minnesota Pollution Control Agency (MPCA) in order to comply with the Clean Water Act. Minnesota Rule 7090.1010 requires that cities with populations over 10,000 people must apply for coverage under the state general permit.
The City was granted coverage under the permit. The City Storm Water Pollution Prevention Plan (SWPPP) was approved along with the SWPPP.
The City of North Mankato's Erosion & Sediment Control Requirements:
MS4 Program Information:
Minnesota Pollution Control Agency's Watershed.
Minnesota Department of natural Resource's Watershed Health Assessment Framework.
Watershed Map Books.
DNR Natural Resources Healthy Rivers: A Water Course.
Erosion Control.
Residential Pollution Prevention Methods.
Soil Test Information.
The City of North Mankato's Enforcement Response Procedures (ERPs):
Enforcement Response Procedures (ERPs)
Stormwater Materials:
Minnesota Pollution Control Agency
United States Environmental Protection Agency
MN Stormwater Manual
Center for Watershed Protection
Minnesota Cities Stormwater Collation (MCSC)
Minnesota River Basin
Total Maximum Daily Load (TMDL) Projects
Coalition of Greater Minnesota Cities
Snow Removal Tips to Improve Water Quality by Salt & Sand Reduction:
Snow Removal Tips
10 Smart Salting Tips
MPCA Winter Parking Lot and Sidewalk Maintenance Fact Sheet
MPCA Video on Winter Maintenance for Small Sites
City of North Mankato MS4 and SWPPP Information:
2018 Annual Report
2017 Annual Report
2016 Annual Report
2015 Annual Report
Ordinance Chapter 54: Stormwater (Updated with Ordinance No. 82 on December 5, 2016)
MS4 SWPPP Application Reauthorization
Keep Our Lakes and Rivers Clean
Questions or comments concerning Storm Water and Erosion and Sediment Control issues, contact:
Public Works Director Luke Arnold
(507) 625-4141