Design storms provide the discrete conditions needed to begin the design of a collection system. These short-duration events facilitate small and quick model runs, but do not demonstrate the long-term performance of the system. To evaluate long-term performance of systems that were
tested and designed with design storms, CH2M HILL, in conjunction with other consultants and the Metropolitan Sewer District of Greater Cincinnati (MSDGC), developed a process that applies design storm model run data to historical rainfall records to estimate a sewer system's long-term performance.
This process has been nick-named “annualization” and was developed as part of the Capacity Assurance Program Plan (CAPP) for MSDGC.
Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed. WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.