In July 1890, a relaxing day trip turned tragic when the sternwheeler Sea Wing sank on Lake Pepin, taking with it scores of passengers - the majority of whom hailed from nearby Red Wing, Minnesota.
Sources:
Johnson, Frederick L. "Unlocking the Mysteries of the Sea Wing"
Kinkenberg, Dean. "The Sea Wing Disaster"
Pierce County, WI - The Sea Wing Disaster
Sea Wing Disaster, 1890
Shipwrecked on Lake Pepin: The Sea Wing Disaster