61' - The river level is at the net grade protection of the levee system
60' - The river is at the lowest height of the back ring protection levee around the city of Simmesport
43' - The river stage is at the natural ground elevation of areas protected by the levee system
40' - There will be flooding of areas inside the levees of the Atchafalaya floodway. Considerable flooding in the backwater storage area in Avoyelles Parish.
35' - Backwater flooding of unprotected areas above Simmesport will begin