Fuseplug Spillway

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

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

Weir Coefficient used in Weir equation. The default value is 1.7.

Decay Rate

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.