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?
Solved! Go to Solution.
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.
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.
Matthew Anderson, PE