Hydraflow - Precipitation data is not matching

[rogeriogestal30]

I am running some calculations to determine my peak flow using the scs method. When a input my data, the program asks me to input my 2 year 24 hour storm. Then I run the calculations based on the storm event I want to calculate (2 year, 5 year, 10 year, etc). When it gives me the peak flow, everything seems to be fine, but the precipitation data doesn't match what I have for the storm event (it's always lower than the precipitation I have). I have attached images of what is going on. All of my storms are there. Am I Doing something wrong? I thought it was a range of precipitation approximation, but it doesn't seem to be the case. Can anybody tell me what's happening?

[wfberry]

Perhaps if you can post your .gpw file someone can help.

Bill

[rogeriogestal30]

Sorry, but what is the .gpw file?

[wfberry]

It's your Hydrograph file.

[rogeriogestal30]

Autodesk says the file format is not supported.

[wfberry]

If you are using Hydraflow Hydrographs Extension in your Civil 3D, you should be saving a file like *.gpw.