Accession Number : AD0720546

Title :   Model Studies of Navigation Improvements, Columbia River Estuary Report 2. Entrance Studies. Section 1. Fixed-Bed Studies or South Jetty Rehabilitation.

Descriptive Note : Technical rept.,

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS

Personal Author(s) : Herrmann,Frank A. , Jr. ; Simmons,Henry B.

Report Date : AUG 1966

Pagination or Media Count : 167

Abstract : The existing comprehensive fixed-bed model of the Columbia River estuary was used to determine the need for rehabilitating all or part of the outer end of the existing south jetty. This jetty has seriously deteriorated during the past 25 years, and an extensive rehabilitation program has been undertaken. Model tests were conducted to determine the effects of various stages of repair of the outer 1900 ft of the jetty on the hydraulic, salinity, and shoaling characteristics of the entrance area. Tests results consist of tidal elevation measurements current velocity measurements, salinity measurements, photographs of surface and bottom current patterns, and shoaling patterns. (Author)

Descriptors :   (*BREAKWATERS, *HYDRAULIC MODELS), (*ESTUARIES, HYDRAULIC MODELS), RIVER CURRENTS, SALINITY, TIDES, SEDIMENTATION, DAMAGE CONTROL, TEST METHODS

Subject Categories : Hydrology, Limnology and Potamology
      Civil Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE