AutoCAD Civil 3D - Stormwater

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Active Member
Posts: 6
Registered: ‎03-31-2010
Message 1 of 5 (329 Views)

Hydrographs: Variable Tailwater Elevation

329 Views, 4 Replies
07-31-2012 12:49 PM

Hydraflow Hydragraphs Extension

1. Is there a way to model a pond with a tailwter that varies over time?

2. Is there a way to export a reservoir's resulting elevation vs. time data?

Valued Contributor
Posts: 53
Registered: ‎04-21-2008
Message 2 of 5 (287 Views)

Re: Hydrographs: Variable Tailwater Elevation

08-16-2012 03:36 PM in reply to: jack0001

Not to my knowledge there is.  The only type of variable tailwater analysis that Hydraflow Hydrographs has is the interconnected ponds, routines.  Otherwise, you can just put in a static tailwater in the outlet parameters. 

 

Rather than trying to update a structure to mimic a variable tailwater in hdyraflow, I'd recommend modeling anything with a variable tailwater condition in SSA.  With SSA you can create a channel section, run a flow through it, set the Tc, etc. and it will essentially build a rating curve.  It also can serve to determine if you increase the peak at this downstream point.  Main thing you have to do if you use SSA with hydrodynamic routing is just make sure you understand and read up on the parameters, and check all your link time series to see that they look correct and don't show oscillations in them. There are several threads regarding parameters for hydrodynamic modeling. 

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Alan Neal, P.E.
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Active Contributor
rdbrennan48
Posts: 32
Registered: ‎12-05-2011
Message 3 of 5 (264 Views)

Re: Hydrographs: Variable Tailwater Elevation

08-21-2012 06:31 AM in reply to: jack0001

Also, in SSA you can set up a time series, hydrograph, with time vs. elevation to an outlet. I have used this to correlate a seperate detention model with my pipe network.

Active Member
Posts: 6
Registered: ‎03-31-2010
Message 4 of 5 (260 Views)

Re: Hydrographs: Variable Tailwater Elevation

08-21-2012 06:45 AM in reply to: rdbrennan48

And SSA stands for...?

Active Contributor
rdbrennan48
Posts: 32
Registered: ‎12-05-2011
Message 5 of 5 (258 Views)

Re: Hydrographs: Variable Tailwater Elevation

08-21-2012 07:15 AM in reply to: jack0001

Storm and Sanitary Analysis

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