If you can't, I know it's on page 83 of the old August 2000 edition of the ERP BOR. Email me and I'll send you a copy of the old BOR. It was a little weird. They gave you a cumulative rainfall table 72 hours long, but instead of summing to 100% it summed to 135.9%, with 35.9% of it falling the first two days and the remaining "100%" falling in the third day. So their 24 hour distribution was just the third day of the 72 hour distribution.
Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East -