WIN TR-55 and HEC-HMS
WIN TR-55 and HEC-HMS
(OP)
I am reviewing a 3 acre project where the design engineer has used WIN TR-55 to determine the pre-development peak flows, but uses HEC-HMS to route the post-development flows. The report contains hardly any input or output data for the routing calculations, so he will have to provide additional information. I have never used HEC-HMS and have never used WIN TR-55 to doing routing. I question the use of two different models (even if both are based on TR-20?) for comparing pre and post developed flows. Thoughts?





RE: WIN TR-55 and HEC-HMS
but I don't see why they did not use HEC-HMS for pre if the purpose is to compare the two conditions.