AutoCAD Civil 3D - Stormwater

[#1]

For some reason, in the IDF rainfall curve window, when i enter my rainfall data into the IDF table tab i receive the following "Data Error": "No Solution: values may be non-uniform or unrealistic. values should increase with return peroid"

The problem is i have tried 3 sets of data. one that i know has worked in the past and i am still getting the same error. the rainfall data is from a government website so the numbers should be good.

has anyone experienced this problem before?

[#2]

Which program and what set of numbers are you using?

[#3]

sorry, i forgot to mention that. I am using Hydraflow Hydrographs extension for Civil 3D. The data i am using i got off of the NOAA website, they are  "PDS-based point precipitation frequency estimates" i'm using the 1,2,5,10,25,50 & 100 year storm events with 5,10,15,30, 60 minute durations.

[#4 · Accepted solution]

Be sure to use the "Precipitation intensity" Data Type from the NOAA website rather than the "Precipitation depth".

Sounds like you are using the depth values.