Commenting open: April 28, 2025 12:00AM CT - May 12, 2025 11:59PM CT.
DNR (Willard Munger Trail Knowlton Creek crossing replacement) - 401 Water Quality Certification
We invite you to comment on the draft 401 Water Quality Certification for Willard Munger Trail crossing in St Louis County.
The Minnesota Department of Natural Resources (DNR) proposes to replace an existing 8-foot-by-10-foot-by-122-foot-long concrete culvert with a 100-foot-long truss span bridge across Knowlton Creek in Duluth. The new bridge will be 13 feet lower than the existing crossing to reduce the grade and comply with accessibility standards. The streambed will be restored to a natural geomorphology for aquatic organism passage and flood mitigation.
The replacement will impact 200 linear feet of Knowlton Creek, permanently impact 0.11 acres of wetlands, and temporarily impact 0.11 acres of wetlands. The DNR will mitigate the permanent impacts at a 1:1 ratio.
A 401 Water Quality Certification is required when an individual, business, or property owner proposes construction-related activities near a navigable lake, river, stream, or adjacent wetland. The MPCA reviews projects to ensure they will not violate Minnesota's more protective water quality standards. The 401 certification becomes an enforceable component of the associated federal license or permits issued under the Clean Water Act.
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Thank you for subscribing to the DNR (Willard Munger Trail Knowlton Creek crossing replacement) - 401 Water Quality Certification mailing list.
We invite you to comment on the draft 401 Water Quality Certification for Willard Munger Trail crossing in St Louis County.
The Minnesota Department of Natural Resources (DNR) proposes to replace an existing 8-foot-by-10-foot-by-122-foot-long concrete culvert with a 100-foot-long truss span bridge across Knowlton Creek in Duluth. The new bridge will be 13 feet lower than the existing crossing to reduce the grade and comply with accessibility standards. The streambed will be restored to a natural geomorphology for aquatic organism passage and flood mitigation.
The replacement will impact 200 linear feet of Knowlton Creek, permanently impact 0.11 acres of wetlands, and temporarily impact 0.11 acres of wetlands. The DNR will mitigate the permanent impacts at a 1:1 ratio.
A 401 Water Quality Certification is required when an individual, business, or property owner proposes construction-related activities near a navigable lake, river, stream, or adjacent wetland. The MPCA reviews projects to ensure they will not violate Minnesota's more protective water quality standards. The 401 certification becomes an enforceable component of the associated federal license or permits issued under the Clean Water Act.
Contact Information
*Indicates Required Fields