Review of the U.S. Army Corps of Engineers Involvement with Alluvial Fan Flooding Problems
Review of the U.S. Army Corps of Engineers Involvement with Alluvial Fan Flooding Problems

Author: Robert C. MacArthur

Publisher:

Published: 1988

Total Pages: 24

ISBN-13:

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This technical paper presents a general overview of the Corps of Engineers' past involvements, present practices, and the future roles in dealing with alluvial fan flooding problems. The Corps' approach to alluvial fan flooding studies and the analytical methods they use to assess potential flood hazards are summarized. Selected case studies are presented. Six important issues that need to be considered as part of an effective alluvial fan management approach are presented. An extensive list of references is also included. (fr).

Corps of Engineers' Experience with Automatic Calibration of a Precipitation-runoff Model
Corps of Engineers' Experience with Automatic Calibration of a Precipitation-runoff Model

Author: David T. Ford

Publisher:

Published: 1980

Total Pages: 20

ISBN-13:

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Computer program HEC-1, a precipitation-runoff model widely used throughout the United States, includes the capability to estimate automatically any of twelve parameters necessary to model the precipitation-runoff process and the channel routing process. The parameter estimation scheme employs Newton's method to minimize a weighted sum of squares of differences between observed and computed hydrograph values. Applications of this parameter estimation procedure are presneted, and typical steps of the procedure for deterimining optimal parameter estimates are outlined. Recent efforts to improve the estimation algorithm and recent use of the calibration capability to update sequentially parameter estimates in a flood forecasting application are discussed. (Author).