In the middle '80s, I was advisor to the ASCE Student Chapter at San Diego State University.
The group met weekly, and we invited an engineer from the local community to share his/her experiences
with our students.
For one such talk, a well known hydraulic engineer came and spoke to us about a project that he had been involved with.
Sometime during the course of the presentation, he said that he had done some routing with HEC-2. Being an unsteady flow expert,
I know that you can not route with HEC-2. So, I felt a little uncomfortable having to correct our guest on a matter of concept.
In 1998, HEC-2 was replaced by HEC-RAS, which remained a steady flow model through its versions 1 and 2.
However, version 3, released in 2002, has the capability to perform
unsteady flow computations. Thus, now we can properly say that we can "route with HEC-RAS,"
while a similar statement was not correct in regards to HEC-2.
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