17' - Water flowing over the highest point of the Sturgeon River Road bridge driving surface
15' - Water is flowing over road surface of both bridge approaches
14.5' - Water reaches the bottom of the bridge between Sturgeon River Road and Rajala Road. The bridge begins to cause backwater effects at this stage
12' - Lower portions of Sturgeon River Road...Aho Road...and Rajala Road are impassable
10.5' - The river begins to overflow onto Sturgeon River Road...Rajala Road...and Aho Road