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LID staff weigh beaver coexistence and carp‑risk mitigation for Swedish Immigrant Trail culvert project
Summary
LID staff reported working with Beaver Innovations on coexistence options after visiting Lake Ellen Weir and Swamp Lake; engineers are considering sheet piling and a carp barrier for a Center City culvert tied to the Swedish Immigrant Trail expansion to limit sediment movement and prevent a carp nursery.
LID staff told the board April 6 that they met with Beaver Innovations, a University of Minnesota start‑up focused on coexistence with beavers, and visited sites including the Lake Ellen Weir and Swamp Lake. Staff said the company is seeking management solutions that could reduce conflict while preserving wetland functions.
Board discussion then turned to a Center City culvert installation connected to the Swedish Immigrant Trail expansion. The site currently contains a beaver lodge and associated wetland; staff warned that removing the lodge could mobilize sediment and create conditions suitable for carp spawning. Engineers are evaluating mitigation options, including sheet piling and installing a carp barrier to prevent a new carp nursery from forming.
