Fish habitat improvement on the South Branch Vermillion River

About this project

Client
Minnesota Trout Unlimited
Location
Minnesota
Cost
$575,000
Completion date
2019

Barr collaborated with Minnesota Trout Unlimited and the Minnesota Department of Natural Resources (DNR) to improve trout habitat on 7,000 feet of the South Branch Vermillion River within a 62-acre aquatic management area near Hastings. The river reach was identified as having high potential to provide spawning and refuge habitat for wild trout but was limited due to the accumulation of sand and fine sediment, which was smothering spawning substrate.Barr conducted a topographic and geomorphic survey (including pebble counts) of existing conditions as well as a watershed assessment to inform the project design. In addition, we performed hydraulic modeling to confirm that the design could withstand flood flows and adequately transport sediment through the reach. DNR staff members and volunteers completed extensive buckthorn removal prior to the implementation of channel improvements, which involved re-meandering approximately 1,100 feet of channel and installing bank-stabilization and channel-narrowing measures. These features included rock riffles, log step pools, boulder clusters, brush bundles, fascines, and toe wood and were constructed using natural wood and rock material. Barr developed the construction bid package and provided construction oversight. Native vegetation was planted and is being managed by the DNR to encourage long-term success. Following construction, we completed a post-construction survey and report to document the project. Since project completion, the reach has become a popular destination for trout anglers.

Key team members

Tom MacDonald
Vice President
Senior Water Resources Engineer

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