How to prepare rainfall data for modeling?

Rainfall Units

Date Time formats

  • Jan 1 2020, 11:20am
  • 2020, 1, 1, 11, 20
  • 11/20/2020, 11:20
  • 11/20/2020 11:20
  • etc
  • combine date time from multiple columns into one column
  • separate date time from one column to multiple columns
  1. we need to build a time index with fixed interval. Start the first two rows, then drag it. Be careful, sometimes Excel might get the calculation wrong, make sure you review the intervals using the method above and fix any errors.

An XPSWMM Example

  • 4 in/hr for the 1st hour (1in/15min=4in/hr)
  • 8in/hr for the 2nd hour.

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