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Fish Surveys & IBI Calculations - Raccoon Creek Re-Meandering Project
Living Waters Consultants (LWC) and Illinois DNR (IDNR) with the Natural Land Institute (NLI) are performing pre- and post-restoration fish species assessments at the Raccoon Creek Re-Meandering Project. The project site is located at the Nygren Wetland Preserve in Rockton, Illinois. Raccoon Creek is classified by IDNR as a Biologically Significant Resource. However, past channelization reduced habitat availability. Recent stream restoration and re-meandering completed by Living Waters Consultants and V3 Consultants has significantly enhanced stream health and fish species diversity. Research by LWC to date indicates re-colonization of previously absent fish species including Rock Bass which require good water quality and high dissolved oxygen levels, Grass Pickerel which require instream vegetation have increased 1,500%. Stream health as measured by IBI has improved 33%. The number of fish species has increased 100% from 11 to 22. Restored habitat includes deep meander pools, increased in-stream vegetation, backwater wetlands, and side-channel wetlands.
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