HecRAS-Q change without a xsection

Question

HecRAS-Q change without a xsection

RHOeng (Civil/Environmental)

(OP)

17 Jan 03 14:23

I have a HecRAS model that I deleted some of the cross sections from the geometric data file. I unknowingly deleted one where there was a Q change. The Edit/Steady Flow Data entry still had an entry at that river station, but the cross section didn't exist. The model appeared to run OK, and added the flow change into the next cross section. I corrected the data entry, ran the program and got the same output. Does anyone know how the program should react to this? Does there have to be a xsection at each Q change?

RWF7437 (Civil/Environmental) · Answer 1 · 2003-01-17 16:14:58

I think this is possible and probably the way HEC-RAS works.  If you'd like better information try one or more of the following suggestions:

First, do you have the latest Version of HEC-RAS? I believe it is Ver. 3.01

Second, do you have the full documentation? All three volumes including examples.

Third, there is a user Forum sponsored by Boss International at this URL: http://www.bossintl.com/forums/forums.html

Fourth, I've had some luck contacting Vern Bonner at HEC UC Davis.  Here is that URL:  http://www.hec.usace.army.mil

Fifth, if you need to talk with some experts try Jeff Bradley at West Consultants.  They are the western regional contractors for FEMA in the 10 western states, I believe.

http://www.westconsultants.com

Good Luck,

Russ Faust, PE
Salem, OR USA

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HecRAS-Q change without a xsection