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Confidence Intervals for Design Events
Publisher: American Society of Civil Engineers
Abstract: Confidence intervals for normal, lognormal, and Pearson Type III quantiles based on asymptotic theory are shown to fail to contain the true 100‐year flood and other design events with the specified frequency (confidence ...
Expected Probability and Annual Damage Estimators
Publisher: American Society of Civil Engineers
Abstract: Controversy continues over the relative merits of traditional frequency estimators and the “expected probability” estimator of flood risk that incorporates an adjustment for parameter uncertainty. Both have solid theoretical ...
Analytical Estimation of Geomorphic Discharge Indices for Small Intermittent Streams
Publisher: American Society of Civil Engineers
Abstract: Effective, f-load, and functional-equivalent discharges are metrics that can be used as design flows for stream channel restoration and for eco-hydrologic and geomorphic studies. Previously published analytical estimators ...
Flood‐plain Delineation in Ice Jam Prone Regions
Publisher: American Society of Civil Engineers
Abstract: Flood‐plain delineation in ice jam prone regions is in its infancy. A methodology is introduced for incorporating the risk of ice jams into flood‐plain delineations in northern regions of the U.S. The distribution of flood ...
Regional Skew with Weighted LS Regression
Publisher: American Society of Civil Engineers
Abstract: A statistical procedure is developed for estimating generalized skew coefficients used in the WRC Guidelines for flood frequency estimation. The method is based on weighted least squares regression in which the weights are ...
Flood Frequency Analysis in the United States: Time to Update
Publisher: American Society of Civil Engineers
Evolution of Flood Frequency Analysis with <i>Bulletin 17</i>
Publisher: American Society of Civil Engineers
Abstract: The current methodology recommended for flood-frequency analyses by U.S. Federal agencies is presented in
Hydrologic and Economic Uncertainties and Flood-Risk Project Design
Publisher: American Society of Civil Engineers
Abstract: Hydrologic, hydraulic, and economic uncertainties impact the economic attractiveness of flood-risk management projects. In particular, uncertainty in the calculation of expected annual damages introduces uncertainty into ...
Confidence Interval for Design Floods with Estimated Skew Coefficient
Publisher: American Society of Civil Engineers
Abstract: In 1983, Stedinger published a method, based on the noncentral