26' - FEMA 0.2 0X0P+0nnual Chance Flood Level (500-year flood).
22' - FEMA 1 0X0P+0nnual Chance Flood Level (100-year flood).
21' - FEMA 2 0X0P+0nnual Chance Flood Level (50-year flood). Flood waters begin to reach the Weller Road Bridge near Canoe Creek State Park.
19.5' - Flood of record from the remnants of Hurricane Ivan in September 2004.
18' - Most of Williamsburg is affected by high water. Very few houses on the right bank are above this level.
17.5' - FEMA 10 0X0P+0nnual Chance Flood Level (10-year flood).
17' - Many homes on the right, or south bank are affected by high water. The south approach to the highway bridge is unundated. A number of other streets and roads in the area are closed.
15' - Many homes on the right, or south bank will be affected by high water.
13' - Sections of route 866 from Williamsburg to Ganister are covered by flood waters.
12' - The right, or south bank overflows. The Road near the river upstream of Williamsburg is inundated. A few homes experience basement flooding.