I have been to your HEC-RAS seminar and am currently working on a modeling project and I have a question. Should I consider flow in a basic drainage ditch (one ditch is about 10' wide and 5' deep and the other is about 50' wide and 2' deep) to be supercritical or sub. I am using profiles of a 10 and 100 yr. storm event. Is this something that can be assumed or must it be calculated. Thanks for the help.

Brian Gayle
Kyle Associates, llc
985-727-9377