5-year design storm definition

5-year design storm means a theoretical rainfall event, based on historical records for a given area, having a theoretical 5-year recurrence interval. The 5-year design storm values in Appendix A were calculated with data from Cornell’s Northeast Regional Climate Center’s (NRCC) Extreme Precipitation Analysis website.
5-year design storm means a theoretical rainfall event, based on historical records for a given area, having a 5-year recurrence interval, or a 20% probability of happening in any year. The 5-year design storm values in Appendix A were calculated with data from Cornell’s Northeast Regional Climate Center’s (NRCC) Extreme Precipitation Analysis website.