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River Habitat Restoration Leads to 38-fold Increase in Trout Population
|Project Summary: Reducing riverbank erosion and placing fallen trees in the Coldwater River restored fish habitat and led to a 38-fold increase in the site’s trout population.|
Project name: Trout Recovery in the Coldwater River
Location: Coldwater River, near Grand Rapids, Mich.
Description: The Coldwater River is one of the largest and highest quality cold water streams in southwest Michigan. The 34-mile-long trout stream is home to 32 species of fish, including brown, rainbow and brook trout. However, riverbank erosion and the lack of fallen trees over the river that would provide prime habitat for fish have left stretches of the river with low fish populations. One such area is a 2,500 foot stretch of the river adjacent to Schrems West Michigan Chapter of Trout Unlimited’s Dolan Property. The river has been dredged, is straight and shallow, and contains little woody debris or other cover for fish—resulting in limited and unfriendly aquatic habitat for trout.
In 2010, 38 trees were harvested from the Dolan Property and positioned in the Coldwater River to create fish habitat at 31 locations along the nearly half-mile stretch of river. The log structures have remained in place since construction and have greatly increased the site’s trout population.
Approximate cost of project: $127,000. Schrems received a $20,000 grant from the U.S. Fish and Wildlife Service and $40,750 grant from the National Fish and Wildlife Foundation to supplement approximately $66,250 of local funds, materials and in-kind match.
Resource challenges addressed: Poor aquatic habitat, limited lake-bottom diversity, no fish cover, poor fish migration
Key partners (public and private): Schrems West Michigan Trout Unlimited; Coldwater River Watershed Council; U.S. Fish and Wildlife Service – Partners for Fish and Wildlife Program; Kent County Drain Commissioner; Coldwater River Intercounty Drainage Board; Streamside Ecological Services; Frank “Bob” Perrin – Lansing Trout Unlimited; Michigan Trout Unlimited
Types of jobs created: Machine operator, laborers, design and construction consultants.
Results and accomplishments: The trout population, according to a July 2014 fish survey, has increased tremendously — from 40 per mile at the Dolan Property in 2009, to 1,523 per mile. The project exceeded its goal of 800 fish per mile by 2013. The survey also found an increase in fish species diversity in the river. The habitat improvement work has remained in place, as documented by annual post-project monitoring.
Originally published on August 27, 2014