The St. Louis River splashes against rocks near the Thomson Dam in Carlton on Monday, April 12, 2021. (Samantha Erkkila / serkkila@duluthnews.com)
The St. Louis River splashes against rocks near the Thomson Dam in Carlton on Monday, April 12, 2021. (Samantha Erkkila / serkkila@duluthnews.com)

A fine mist hovers over large rocks as the St. Louis River rushes through the Thomson Dam in Carlton on Monday, April 12, 2021. (Samantha Erkkila / serkkila@duluthnews.com)
A fine mist hovers over large rocks as the St. Louis River rushes through the Thomson Dam in Carlton on Monday, April 12, 2021. (Samantha Erkkila / serkkila@duluthnews.com)

The St. Louis River rushes through Jay Cooke State Park in Carlton on Monday, April 12, 2021. (Samantha Erkkila / serkkila@duluthnews.com)
The St. Louis River rushes through Jay Cooke State Park in Carlton on Monday, April 12, 2021. (Samantha Erkkila / serkkila@duluthnews.com)

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