The program can also be used ito compute rating surfaces or curves that describe the behavior of flow through a culvert. Results can be used in unsteady flow models. It is a 2-D depth averaged finite element flow model. It may be used to model steady or unsteady flows and can include the flow effects of culverts and weir flow. The effects of bed friction and turbulence stresses are included in the equations solved as are, optionally, surface wind stresses and Coriolis forces.
Density is assumed constant.
The model has frequently been used to model the effects of bridge constructions on flood plain flows. 1-D unsteady flow model for stream networks. It is a 1-D unsteady flow model that is used to model flow in networks of open channels. The 1-D flow equations are solved using a 4 point implicit finite difference method. The equations solved include the effect of channel sinuosity and variable water density.