New look at regional flood-frequency relations for arid lands
Journal of Hydraulic Engineering
By: H. W. Hjalmarson and B. E. Thomas
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Abstract
A new method is proposed that combines records for several streamflow-gaging stations, as in the station-year approach, and produces regional flood-frequency relations using an iterative regression technique. This technique eliminates the need to extrapolate the flood-frequency relation to the flood probability of interest. The resulting multiparameter regional flood-frequency relation is based on all the available annual peak-flow data. The method was applied to a group of records from 42 gaging stations in Nevada with many years of no flow and with many poorly defined flood-frquency relations. One- and two-parameter models were developed in which much of the variance in peak discharge is explained by drainage area. The log-Pearson type III and Weibull probability distributions were used in the models. Part of the error is directly assessed using randomly selected subsamples of the annual peak discharges. -from Authors
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | New look at regional flood-frequency relations for arid lands |
| Series title | Journal of Hydraulic Engineering |
| DOI | 10.1061/(ASCE)0733-9429(1992)118:6(868) |
| Volume | 118 |
| Issue | 6 |
| Year Published | 1992 |
| Language | English |
| Publisher | ASCE |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of Hydraulic Engineering |
| First page | 868 |
| Last page | 886 |
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