[jwrivenb]

Aparently I am confused. I was under the impression that it was the other way around that the flow is computed based elevation by using the rating curve on the upstream wse. I am interested in computing flow through the gates based on a known wse.

I’m really just trying to make dummy gates to simulate irrigation jet valve and hydroelectric turbine discharge under normal flow conditions. Since these structures are designed to operate only under water, my gates will have to account for submerged conditions. How would you simulate this? If I cannot use gates at the inline structure, will I have to use a lateral structures with a RC for each process?

I can’t get you a screenshot but I can draw you a picture in paint of what’s going on.

[jwrivenb]

I have decided to add some output data to help explain my situation. I have 2 model runs: 1) With gates open and 2) All gates closed.

Run 1: Gates Open
XS UpStream
WSE: 1020.43
Qtot: 151.83

Inline Structure
WSE: 982.00 (also the gate invert) **very low**
Qtot: 152.26 (expected flow from gates)
Qgates: 0.00

XS DownStream
WSE: 949.98
Qtot: 152.26

Run 2: Gates Closed
XS US
WSE: 1020.68
Qtot: 5.00 (pilot flow)

Inline Structure
WSE: 1020.68
Qtot: 5.00 (pilot)
Qgates: (blank)

XS DS
WSE: 949.91
Qtot: 5.00

So you can see that, with the gates on, I am getting the correct flow but the WSE and Qgates have incorrect values. The only situation I can get a resonable WSE is when the gates are off…but I can’t get the flow I want. Is this normal for what I am trying to do? Should I ignore the WSE at the dam if I am getting the correct flow?

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