Figure 5. Main Interface (bottom), Geometric Data Editor (middle) and Cross Section View (top) of an HEC-RAS Application for the Bill Williams River, Arizona. Two steady state profiles are shown in the cross section view. The solid horizontal line is the simulated water surface for 7,000-cfs, the current maximum release rate of the upstream reservoir. The dashed line is the water surface for 100,000-cfs, which is close to the historical maximum flow in the pre-dam record. Application created by Van Crisostomo, Los Angeles District, Corps.