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dc.contributor.authorWilson, Donald C.-
dc.contributor.authorMaggio, David M.-
dc.contributor.authorVan Norman, Peggy S.-
dc.descriptionTechncial report-
dc.descriptionRepresentatives of the Columbia River Towing Association reported recent structural and/or operational changes at John Day Lock and Dam have created difficult navigation conditions for tows entering or leaving the lower lock approach. Therefore, the U.S. Army Engineer District, Portland, decided to use the existing 1:80-scale fixed-bed model of John Day Lock and Dam located at the U.S. Army Engineer Research and Development Center to investigate and document conditions in the lower lock approach before and after the changes. This report describes the model and prototype experiments conducted to investigate and document navigation conditions before and after the structural and operations changes.-
dc.publisherCoastal and Hydraulics Laboratory (U.S.)-
dc.publisherEngineer Research and Development Center (U.S.)-
dc.relation.ispartofseriesERDC/CHL TR ; 01-5.-
dc.rightsApproved for public release; distribution is unlimited.-
dc.sourceThis Digital Resource was created from scans of the Print Resource-
dc.subjectJohn Day Lock and Dam-
dc.subjectColumbia River-
dc.subjectCurrent direction-
dc.subjectCurrent velocity-
dc.subjectFish migration-
dc.subjectFixed bed model-
dc.titleNavigation study of lower lock approach, John Day Lock and Dam, Columbia River, Oregon-
Appears in Collections:Technical Report

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