PondMaker

Hello,

In attempting to use Pondmakers guide, I got stuck on step 4 where it does the outlet design. I noticed for some reason, my target curve rating just would not show up. There is nothing to go of of from my target curve rating and it is making it so that I won't be able to design my outlet structure.

Using PondMaker to Design a pond in under five minutes - YouTube

In this video you can see at the 3:00 mark they show that there is a target rating curve in turquoise that allows the user to get their composite structure to closely align with once designed.

If there is any solution to this let me know.

Thanks

  • So I guess I'm not completely understanding what this target rating curve represents now. I had thought that the target rating curve represents the outflow you are trying to meet depending on the predevelopment flows based on a single storm event? 

    Just curious why it is needed for two storm events to be needed in order for the curve to show?

  • Shayaan,

    The Target Rating curve represents the curve that you would need to closely match to the designed outlet rating curve, to get close to the target predevelopment flow rates. It is a line, so it needs to connect between at least two points. Those points are the pairs of target predevelopment peak flow and corresponding estimated water surface elevation. With only one storm event entered, there would be only one pair of target flow and elevation and the program is designed to draw a line between multiple points instead of just showing a single point (dot) in space.

    Typically you would design a pond for multiple return events, for example lower events like 10 and 25 year to align with lower outlet components like orifices/culverts and risers, then a higher return event like 100 year, to design for the emergency overflow weir for example. I do not recall seeing PondMaker used before with just one return event.

    We will seek to document this more clearly in the PondMaker wiki article.


    Regards,

    Jesse Dringoli
    Technical Support Manager, OpenFlows
    Bentley Communities Site Administrator
    Bentley Systems, Inc.

  • I have now added this clarification in the PondMaker wiki article.


    Regards,

    Jesse Dringoli
    Technical Support Manager, OpenFlows
    Bentley Communities Site Administrator
    Bentley Systems, Inc.