Flood Peak Estimates from Limited At‐Site Historic Data
Publication: Journal of Hydraulic Engineering
Volume 113, Issue 9
Abstract
Estimates of peak flood discharge on ungauged watersheds are often determined from regional relationships. This approach, however, ignores sitespecific information that might be available from sources such as historic high water marks, etc. A systematic procedure to estimate a given quantile flood, employing the limited at‐site historic data, is developed for the ungauged watershed. In this procedure, the estimates of discharge based upon historic sitespecific evidence are combined with independent regional estimates by inverse variance weighting, to obtain weighted estimates at the ungauged site. The variance of flow determined by the regional method is shown to be adequately represented by the square of the standard error of regression. The variance of flow determined on the basis of historic evidence is represented by the square of the regional standard error determined for gauged sites within the study region. The methodology based on inverse variance weighting appears to give better results than either independent estimate by itself, when compared to the station values at gauged sites within the study region. The simple inverse variance weighting procedure has also been shown to offer computational advantages over the optimal variance weighting scheme, with no sacrifice in accuracy.
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References
1.
Hardison, C. H. (1976). “Estimates of 100‐year floods and the need for appraising their accuracy.” Presented at the 2nd Annual Meeting American Geophysical Union Midwestern Region, 1976.
2.
Hastings, M. E. (1986). “Combining Historic Flood Information With a Regional Procedure for Estimating Flood Peaks,” thesis presented to the Pennsylvania State University, at University Park, Pa., in partial fulfillment of the requirements for the degree of Master of Science.
3.
Jackson, D. R. (1981). “WRC flood frequency guidelines.” J. Water Resour. Planning Mgmt. Div., ASCE, 107(1), 211–224.
4.
Kuczera, G. (1982). “Combining site‐specific and regional information: An empirical Bayes approach.” Water Resour. Res., 18(2), 306–314.
5.
Mendenhall, W. (1977). Introduction to probability and statistics, 5th ed., Duxbury Press, N. Scituate, Mass.
6.
Moss, M. E. (1984). Personal communication, Feb.
7.
Moss, M. E., and Thomas, W. O., Jr. (1982). Discussion of “WRC standard flood‐frequency guidelines,” by D. R. Jackson. J. Water Resour. Planning Mgmt. Div, ASCE, 108(1), 166–168.
8.
Randolph, W. J., and Gamble, C. R. (1976). Techniques for estimating magnitude and frequency of floods in Tennessee. Progress Report, prepared by the U.S. Geological Survey for the Tennessee Dept. of Transp. in cooperation with U.S. Dept. of Transp., Fed. Highway Administration, Washington, D.C.
9.
Tennessee Valley Authority (TVA). (1984). Use of limited site‐specific flood information in estimating flood peaks. Report by TVA Flood Protection Branch, Knoxville, Tenn., Jul.
10.
Thomas, W. O., (1982). “An evaluation of flood frequency estimates based on rainfall/runoff modeling.” Water Resour. Bull. 18(2), 221–230.
11.
Tung, Y. K., and Mays, L. W. (1981). “Reducing hydrologic parameter uncertainty.” J. Water Resour. Planning Mgmt Div., ASCE, 107(1), 245–262.
12.
U.S. Water Resources Council (WRC). (1981). “Guidelines for determining flood flow frequency.” Water Resour. Counc. Bull. No. 17B, U.S. Govt. Printing Ofc., Washington, D.C.
Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 113 • Issue 9 • September 1987
Pages: 1159 - 1174
Copyright
Copyright © 1987 ASCE.
History
Published online: Sep 1, 1987
Published in print: Sep 1987
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