I am trying to figure out the best approach to model flood flows through bridges where the downstream boundary is going to be sea level. I know HECRAS is not the best tool for this, but I using it as a first approximation to determine the sites where I will be using multi-d unsteady models. I am assuming a fixed (no tide) elevation for the DS boundary. Looking for some suggestions on boundary conditions and geometry (infinite width cross section at DS?)
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HECRAS simulation with ocean l as DS boundary condition
- Thread starter jeffc
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Do you think that there is a water level gauging station located on the lake?
Are you modeling steady flow using a particular peak flow rate?
If both answers are yes, then you could perform a statistical analysis with the water level recorded to find the WSEL for a particular return period (i.e. same as in the reach).
Some thoughts...
Are you modeling steady flow using a particular peak flow rate?
If both answers are yes, then you could perform a statistical analysis with the water level recorded to find the WSEL for a particular return period (i.e. same as in the reach).
Some thoughts...
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