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I have 3 subcatchments that generate a total of 3000cf of runoff and a basin that will contain 5000cf below the overflow weir. Yet the model is showing 0.27cfs through the weir. I know the storage curve is correct and the weir is set at the correct elevation. Any idea as to why the model is not correctly accounting for the available storage?
Click on 'Time-Series plot' and check the storage node for total volume vs time and depth vs time. If anything else looks wacky, double check the storage node settings, especially the elevations. A mis-typed number here can create wacky results. The WSel should be set to zero for a dry pond.
If you cannot find anything wrong, post the file here for a second look.
Windows 7 64-bit Dell Precision T5610, Dual-Xeon 2.6Ghz, 16 Gig RAM Civil 3D 2013
I checked the two graphs in time series plots and everthing looks normal except I know the peak depth is wrong. I tried to attach the model but its a *.spf file and this site will not accept that file extention. I don't see why its the only option for the 2012 Autodesk Storm and Sanitary Analysis program.
Well, unfortunately, your storage curve is NOT correct. The curve is based on DEPTH, not ELEVATION. It adjusts the curve to fit the invert elevation under the 'Physical Properties' tab of the storage node. You can use the same storage curve for multiple nodes if the pond is a standard size and shape. Maybe this link will help you understand it better: Being Civil: Defining Storage Curve Data
PS: I've found this blog to be a wealth of information on Civil 3D. I hope you do, too.
Windows 7 64-bit Dell Precision T5610, Dual-Xeon 2.6Ghz, 16 Gig RAM Civil 3D 2013
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