Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Effect of Agnes Floods on Annual Series in Pennsylvania.
Author Reich., Brian M. ;
CORP Author Pennsylvania State Univ., University Park. Inst. for Research on Land and Water Resources.
Year Published 1973
Report Number OWRR-A-016-PA; W74-07455 ; OWRR-A-016-PA(4)
Stock Number PB-231 871
Additional Subjects Floods ; Pennsylvania ; Statistical analysis ; Flood forecasting ; Hydrology ; Watersheds ; Probability theory ; Estimates ; Hurricane Agnes
Library Call Number Additional Info Location Last
NTIS  PB-231 871 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 80p
Maximum flood discharges for Hurricane Agnes, 1972, on 44 Pennsylvania watersheds were compared with historic flood records. Mathematical frequency curves were fitted to each series according to the Gumbel, log-Gumbel, and log-Pearson Type III methods. The 1972 floods were less than 4.8 times the average annual flood peak in all but 8 of the 44 cases. The threshold was established in previous studies as the ratio between a 1,000-year flood and an average annual flood, equivalent to about a 5% chance of being exceeded by a worse flood once or more in the next 50 years. Most locations have high probabilities of being struck by far worse floods than they experienced in 1972.