Accession Number : AD0742274

Title :   Model Studies of Navigation Improvements, Columbia River Estuary. Report 2. Entrance Studies. Section 3. Fixed-Bed Studies of Disposal Areas C and D.

Descriptive Note : Technical rept. Apr-Jun 64,

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS

Personal Author(s) : Herrmann,Frank A. , Jr

Report Date : APR 1972

Pagination or Media Count : 63

Abstract : The existing, comprehensive fixed-bed model of the Columbia River estuary was used to determine whether disposal areas C and/or D are suitable for use as primary disposal areas for dredging operations in the mouth of the Columbia River. Model tests were conducted to determine the hydraulic, salinity, and shoaling characteristics of the areas for conditions of low, intermediate, and high freshwater discharge. Test results consist of tidal elevation measurements, current velocity measurements, flow predominance computations, salinity measurements, photographs of surface and bottom current patterns, and shoaling patterns for material placed within the disposal areas. The results of the model tests indicate that material placed in either of these disposal areas will not be redeposited in the navigation channel in significant amounts. The capacity of both disposal areas, however, appears to be limited; thus it may not be possible to use either as a primary disposal area. (Author)

Descriptors :   (*ESTUARIES, *CIVIL ENGINEERING), HYDRAULIC MODELS, DISPOSAL, SOILS

Subject Categories : Hydrology, Limnology and Potamology
      Civil Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE