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Jul 28, 2009 - Mississippi River Locks & Dams

We continued our trip down the Great River Road today. The area along the river from just below the Twin Cities is unique. The ancient Mississippi River cut a deep valley through the area when the glaciers melted at the end of the ice ages. The channel gradually filled in when the melt water stopped. The valley has steep bluffs on both sides and is pretty wide. Plants and animals in this area are unique and many are not found anywhere else. The area from Wabasha to Rock Island, IL has been designated as the Upper Mississippi National...

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