To capture the likelihood of levee failure at specified levee locations, levee failure elevations will be sampled from the input fragility curves at each project location for each event or realization. HEC-WAT randomly selects a value between zero and one for either each event or each realization (user's choice), from the user-defined fragility curve(s) in the Fragility Curve Editor to produce a failure stage to be consumed by a program lower in the program order.