00474349

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http://onlinepubs.trb.org...trr/1986/1073/1073-002.pdf

https://scholar.google.co...auer&publication_year=1986

Five reports dealing with flood magnitude and frequency in urban areas in the southeastern United States have been published during the past 2 years by the U.S. Geological Survey (USGS). These reports are based on data collected in Tampa and Tallahassee, Florida; Atlanta, Georgia; and several cities in Alabama and Tennessee. Each report contains regression equations useful for estimating flood peaks for selected recurrence intervals at ungauged urban sites in their respective study area. A nationwide study of urban flood characteristics by the USGS published in 1983 contains equations for estimating urban peak discharges for ungauged sites throughout the United States. At the time that the nationwide study was conducted, data from only 35 sites in the southeastern United States were available. The five new reports contain data for 88 additional sites in the southeastern United States. These new data show that the seven-parameter estimating equations developed in the nationwide study are unbiased and have prediction errors less than those described in the nationwide report. On the other hand, the new data indicate that the three-parameter equations are biased and significantly underestimate flood discharge in four of the new study areas. The five new reports on the southeastern United States and the nationwide report provide reliable methods for estimating design discharges.

Publication of this paper sponsored by Committee on Hydrology, Hydraulics, and Water Quality. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01418775

pp 10-15

1986

Transportation Research Record

65th Annual Meeting of the Transportation Research Board

0309040671

Print

References (12) ; Tables (3)

Equations; Estimating; Floods; Peak discharge; Regression analysis; Reliability; Urban areas

Flood frequency; Flood peaks

Data and Information Technology; Highways; Hydraulics and Hydrology; I26: Water Run-off - Freeze-thaw

TRIS, TRB

Oct 31 1987 12:00AM

• A STORM-SEWER FLOW MEASUREMENT AND RECORDING SYSTEM
• EFFECT OF MAIN-CHANNEL ORIENTATION ON FLOOD PEAKS FOR STREAMS IN OHIO
• EVALUATION OF ALTERNATIVE HYDROGRAPH METHODS FOR HYDRAULIC DESIGN
• GABIONS USED IN STREAM GRADE-STABILIZATION STRUCTURES: A CASE HISTORY
• SIMULATION OF FLOOD HYDROGRAPHS FOR GEORGIA STREAMS