I need to generate a hydrograph at a POI for a pre- and post-development scenario for a typical 2-yr 24hr storm. When I obtain a hydrograph for my pre-development scenario it generates an appropriate hydrograph. However, when I try to generate a hydrograph for my post development scenario, it does not generate a hydrograph at all. It shows a flow of 0 ft^3/s for the entire duration. I don't understand what is happening, as I have the correct storms in my "Global storm data" and from what I understand, they should be applied to all scenarios.
I am fairly new to this program and have gone through most of the tutorials on Bentley's LMS, but I cannot find a solution to this specific question.
In addition, is there a way to generate a combined hydrograph of lets say a pre and post 2 year storm event at a specific POI?
Thanks,
Tim