unsteady flow simulation errors

[kira1990]

Hi guys,

I’m trying to simulate a river with a culvert in unsteady flow condition (2 upstream and downstream flowhydrographs), the simulation is interrupted showing the message below:

***** Error! Extrapolated above/beyond Rating Curve (Bridge/Culvert/etc.) *****

At River Oued_halouf Reach 1 R.S. 1640

The maximum xsec wsel error was 0.057
Oued_halouf 1 90 at 11MAY2016 02:30:00

The maximum storage area wsel error was 0.000

**** The Model Has One Or More Error(s) ****

Finished Unsteady Flow Simulation

Any help please! thx a lot.

[dueckrandy]

Have you entered a maximum headwater elevation that is too low? This is entered in the Bridge Culvert Data editor under HTab Param.

[Anonymous]

Thank you for your reply . I tried to change the head water maximum level in the culvert Htab but in vain the same error message appeared!

[Author]

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