Hoping for help with Hydraflow Hydrographs on Answer Day!

Hoping for help with Hydraflow Hydrographs on Answer Day!

ad_crj_1234
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Hoping for help with Hydraflow Hydrographs on Answer Day!

ad_crj_1234
Enthusiast
Enthusiast

You can see my original post here

 

https://forums.autodesk.com/t5/autocad-civil-3d-forum/hydraflow-hydrographs-calculation-methods/m-p/...

 

However, my problem has not been solved so I am hoping someone can help me on Answer Day!

 

My problem is with elevation discrepancies in the Hydraflow Hydrographs program.  Basically, I cannot understand why the hydrograph discharge table elevations differ from the El vs T graph and the Maximum Elevation listed on many of the reports.

 

I have attached the troublesome Hydraflow Hydrographs file as well as three screenshots produced from that file. (You will have to remove the .doc from the gpw file; I had to add this to get it to upload.  .gpw was not a valid extension for some reason.)  (See previous post for Screenshot 3 since there is a max. of 3 attachments per post.)

 

From the program, one can get a Hydrograph Report as shown in Screenshot2.  One can also view/print the El vs T graph as shown in Screenshot1.  Screenshot3 (in my previous post) is a print of the Q vs T graph.

 

The Q vs T graph plot lists Maximum Elevation of 337.41 which matches that shown on the El vs T graph - Great!

 

However, the Hydrograph Report (Discharge Table) differs.  I thought the elevations for given times in the Hydrograph Report should match the graph.  After doing some manual calculations, it seems to me that the discharge table is correct, it is the El vs T graph that is wrong, and then the print of the Q vs T graph (as well as all other reports that list the maximum elevation) just picks up the wrong maximum elevation to display on its printed page.

 

Also, I have found this problem presents itself whether a pond (contours/manual) or underground chambers are selected in Stage/Storage/Discharge Setup (Ponds Tab).

 

I believe this to be an error with the program, but would like to make sure I am not misunderstanding why these two different outputs do not match.

 

And, by the way, there is a "time shift" on the El vs T graph in that the proper ordinate does not match the proper abscissa according to the table (see Screenshot1).  This appears to be another error with the program.

 

It would really help with our use of the output reports if all these numbers could match properly.

 

I know Mr. Sean Hulbert was looking into my issue. I just wanted to make sure this got seen by anyone that might can help on Answer Day, since I have not heard back from him.

 

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Charlie.Ogden
Autodesk
Autodesk

I see the discrepancy but will need to get a developer to look closer at where the values are coming from and why they differ.  I will let you know what we find out.  Thanks for posting!

 



Charlie Ogden, PE
Product Manager
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