Littleton Dam removal on the Wapsipinicon River may create hazardous ice conditions 2/6/2019 1:39:00 PM View Count 4346 LITTLETON, Iowa -- A construction project on the Wapsipinicon River in Buchanan County to replace the Littleton Dam with a rapids, may create hazardous ice conditions on the river upstream. Work is expected to start on Monday, Feb. 11.