Data for an erodible spillway. Up to a 3-stage failure mode spillway system is allowed.
Fuseplug Spillway Width
Length of fuseplug spillway in metres.
Surcharge depth to initiate failure in metres.
Level of Spillway Sill.
Level of base of spillway. This level is assumed to be the final failure level.
Weir Coefficient used in Weir equation. The default value is 1.7.
Lateral decay rate of failure in m/hr. The time to fail is interpreted linearly after failure commences. Failure occurs laterally over full depth while water level above base RL.