Commenting open: May 21, 2025 12:00AM CT - June 04, 2025 11:59PM CT.
Washington County (Ravine Lake outlet channel restoration) - 401 Water Quality Certification
We invite you to comment on the draft 401 Water Quality Certification for the Ravine Lake outlet channel restoration.
The South Washington Watershed District proposes to stabilize 492 linear feet of the Ravine Lake outlet channel (stream ID 07010206-517) that flows from Cottage Grove Ravine Regional Park to reduce erosion and sediment export and to prevent further headcutting and incising.
The watershed district plans to install grade control structures, implement a properly sized bankfull channel, grade in a floodplain bench, and restore vegetation in eroding and disturbed areas.
The stabilization will require .43 acres of excavation and 638 square feet of permanent fill below the ordinary high-water level. Additionally, the project will temporarily impact 2,613 square feet of wetlands and permanently impact 435 square feet of wetlands. No mitigation is proposed.
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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We invite you to comment on the draft 401 Water Quality Certification for the Ravine Lake outlet channel restoration.
The South Washington Watershed District proposes to stabilize 492 linear feet of the Ravine Lake outlet channel (stream ID 07010206-517) that flows from Cottage Grove Ravine Regional Park to reduce erosion and sediment export and to prevent further headcutting and incising.
The watershed district plans to install grade control structures, implement a properly sized bankfull channel, grade in a floodplain bench, and restore vegetation in eroding and disturbed areas.
The stabilization will require .43 acres of excavation and 638 square feet of permanent fill below the ordinary high-water level. Additionally, the project will temporarily impact 2,613 square feet of wetlands and permanently impact 435 square feet of wetlands. No mitigation is proposed.
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