From the record
“The Round Lake Logging Dam is a historic dam on the south fork of the Flambeau River eighteen miles east of Fifield, Wisconsin, United States, where the river flows out of Round Lake. This earth and timber dam was originally built around 1880 to help lumber companies drive logs down the Flambeau River to sawmills around Eau Claire and beyond on the Mississippi.”
Wikipedia article Round Lake Logging Dam, CC BY-SA 4.0.
One of 12 National Register listings published here for Price County · listed in 1981 · category: Structure · built in 1876.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service