39' - This will produce major flooding of residential and commercial areas, highways and pastures from Teanaway downstream to Ellensburg, especially in the town of Thorp.
38' - At this level, flooding of roads and pastures in the vicinity of the river will occur. The Ellensburg water supply pumphouse is threatened.
36.5' - There will be flooding in pastures along the river.
35.5' - At this level, there will be minor flooding in areas along the river from Teanaway to Ellensburg including Irene Rienhart Park in Ellensburg.
33.5' - At this stage, the river is near bankfull at Ellensburg. Lowland flooding is possible in the low areas along the river.