Cardno assisted the client with stream design, permitting, and construction oversight for 2,400 linear feet of the Blackhoof River in Minnesota.
The client’s objective on the project was to enhance the quantity and quality of trout habitat in and along the Blackhoof River in Carlton, Minnesota.
To help the client achieve this goal, Cardno developed a design for approximately 2,400 feet of stream to move the channel away from six actively eroding 40 foot high collapsing slopes, reducing stream bank erosion and sedimentation to the stream.
The design also sought to increase trout habitat by creating deep pools and providing overhead bank cover. As part of the design, streambanks were graded to more stable angles and a floodplain access was created to allow flood flows to access vegetated banks.
In-stream structures were installed to re-direct flow away from the streambanks and towards the center of the channel. Newly installed structures provided deep pools for holding adult trout as well as overhead cover for juveniles. Constructed riffles and glides were installed to provide improved habitat and channel stability.
These habitat enhancement structures were installed using trees removed during bank grading operations. All exposed areas created during construction were seeded with native grasses and forbs endemic to this part of Minnesota.
Cardno completed the design, regulatory permitting, and construction oversight for the project.