Climate factor for small-basin flood frequency
Water Resources Bulletin
By: R.W. Lichty and M.R. Karlinger
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Abstract
A climate factor, CT, (T = 2-, 25-, and 100-year recurrence intervals) that delineates regional trends in small-basin flood frequency was derived using data from 71 long-term rainfall record sites. Values of CT at these sites were developed by a regression analysis that related rainfall-runoff model estimates of T-year floods to a sample set of 50 model calibrations. CT was regionalized via kriging to develop maps depicting its geographic variation for a large part of the United States east of the 105th meridian. Kriged estimates of CT and basin-runoff characteristics were used to compute regionalized T-year floods for 200 small drainage basins. Observed T-year flood estimates also were developed for these sites. Regionalized floods are shown to account for a large percentage of the variability in observed flood estimates with coefficients of determination ranging from 0.89 for 2-year floods to 0.82 for 100-year floods. The relative importance of the factors comprising regionalized flood estimates is evaluated in terms of scale (size of drainage area), basin-runoff characteristics (rainfall-runoff model parameters), and climate (CT).
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Climate factor for small-basin flood frequency |
| Series title | Water Resources Bulletin |
| DOI | 10.1111/j.1752-1688.1990.tb01395.x |
| Volume | 26 |
| Issue | 4 |
| Year Published | 1990 |
| Language | English |
| Publisher | American Water Resources Association |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Water Resources Bulletin |
| First page | 577 |
| Last page | 586 |
| Google Analytic Metrics | Metrics page |