List of Contributions

I use WWHM-SWMM (combined EPA HSPF and EPA SWMM software) for continuous simulation hydrology modeling of stormwater systems and urban and natural watersheds. I use HEC-RAS for backwater analysis. ------------------------------ Douglas Beyerlein HG, P.E., D.WRE, M.ASCE Principal Engineer Clear ...

I disagree that CN and Rational Method calculations are a good check on model results. They are not the standard by which we should be judging model results. We may be comfortable using curve numbers and Q = CIA since they have been in use since pre-computer days, but that doesn't mean that they produce ...

I hate to pour cold water on your desire to model extreme flood events with curve number (CN) hydrology, but I have to ask the question: Why are you using this method? CN hydrology was invented when we were using slide rules to calculate flood events. I still own a slide rule (I have been doing ...