The model investigation described herein was conducted for the U.S. Army Corp of Engineer District, Walla Walla, by the U.S. Army Engineer Research and Development Center (ERDC), Vicksburg, MS. The study was conducted in the Coastal and Hydraulics Laboratory (CHL) during the period of June 1997 to December 1997. Dr. James R. Houston was the Director of CHL and Mr. Charles C. Calhoun, Jr., was the Assistant Director.

During the course of the model study, representatives of the Walla Walla District and other navigation interest visited ERDC at various times to observe the model and discuss tests results. The Walla Walla District was informed of the progress of the model study through monthly progress reports.

The model study was conducted under the direct supervision of Dr. Larry L. Daggett, Chief of the Navigation Division, CHL. The principal investigator in immediate charge of the navigation portion of the model study was Mr. H.E. Park, assisted by Mr. K. Green, and Ms. D. George of the Navigation Division, and Messrs. D. Fuller, D. White, and J. Williams of the Hydraulic Structures Division. This report was prepared by Messrs. H. Park and D. Fuller. At the time of publication of this report, Dr. James R. Houston was Director of ERDC, and COL John W. Morris III, EN, was Commander and Executive Director.

The contents of this report are not to be used for advertising, publication, or promotional purposes. Citation of trade names does not constitute an official endorsement or approval of the use of such commercial products.