20' - the river reaches major flood stage. Area rangeland, farmland, and a few homes along the west bank are threatened.
17' - the river reaches moderate flood stage, flooding a considerable amount of farmland along the west bank.
14' - the river reaches minor flood stage, and begins flooding area farmland, mainly downstream.
12' - the river reaches bankfull. No significant threats are known at stages between 12 and 14 feet.