Download or read book Model Studies of Navigation Improvements Columbia River Estuary written by Frank A. Herrmann and published by . This book was released on 1966 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Model Studies of Navigation Improvements Columbia River Estuary written by Frank A. Herrmann and published by . This book was released on 1968 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Model Studies of Navigation Improvements Columbia River Estuary written by Frank A. Herrmann and published by . This book was released on 1971 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Model Studies of Navigation Improvements Columbia River Estuary written by Frank A. Herrmann and published by . This book was released on 1966 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 north jetty. This jetty has seriously deteriorated during the past 25 years, and a rehabilitation program has been undertaken. Model tests were conducted to determine the effects of various stages of repair of the outer 1800 ft of the jetty on the hydraulic, salinity, and shoaling characteristics of the entrance area. Test results consist of tidal elevation measurements, current velocity measurements, salinity measurements, photographs of surface and bottom current patterns, and shoaling patterns. (Author).

Download or read book Model Studies of Navigation Improvements Columbia River Estuary written by Frank A. Herrmann and published by . This book was released on 1968 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Model Studies of Navigation Improvements Columbia River Estuary written by F.A. Herrmann and published by . This book was released on 1968 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Model Studies of Navigation Improvements Columbia River Estuary written by Frank A. Herrmann and published by . This book was released on 1972 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Model Studies of Navigation Improvements Columbia River Estuary written by Frank A. Herrmann and published by . This book was released on 1971 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Model Studies of Navigation Improvements Columbia River Estuary written by Frank A. Herrmann and published by . This book was released on 1974 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Model Studies of Navigation Improvements Columbia River Estuary written by Frank A. Herrmann and published by . This book was released on 1968 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Model Studies of Navigation Improvements Columbia River Estuary written by F. A. Herrmann and published by . This book was released on 1968 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Model Studies of Navigation Improvements Columbia River Estuary Report 2 Entrance Studies Section 2 Fixed Bed Studies of North Jetty Rehabilitation written by Frank A Herrmann (Jr) and published by . This book was released on 1966 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 north jetty. This jetty has seriously deteriorated during the past 25 years, and a rehabilitation program has been undertaken. Model tests were conducted to determine the effects of various stages of repair of the outer 1800 ft of the jetty on the hydraulic, salinity, and shoaling characteristics of the entrance area. Test results consist of tidal elevation measurements, current velocity measurements, salinity measurements, photographs of surface and bottom current patterns, and shoaling patterns. (Author).

Download or read book Model Studies of Navigation Improvements Columbia River Estuary Report 2 Entrance Studies Section 3 Fixed Bed Studies of Disposal Areas C and D written by Frank A Herrmann (Jr) and published by . This book was released on 1972 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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).

Download or read book Model Studies of Navigation Improvements Columbia River Estuary Report 1 Hydraulic and Salinity Verification written by Frank A Herrmann (Jr) and published by . This book was released on 1968 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Columbia River estuary model was a combination fixed-bed and movable-bed model, constructed to scales of 1:500 horizontally and 1:100 vertically, and reproduced the lower 52 miles of the Columbia River and an adjoining portion of the Pacific Ocean. The model was equipped with the necessary appurtenances for accurate reproduction and measurement of tides, tidal currents, salinity intrusion, freshwater inflow, shoading distribution, and other significant prototype phenomena. The purpose of the model study was to determine and evaluate the effects of a proposed enlargement of the existing navigation channel from 35 by 500 ft to 40 by 600 ft, and to develop and evaluate various plans for the reduction of maintenance dredging coasts throughout the model area. Model verification tests indicated that the model hydraulic and salinity regimens were in satisfactory agreement with those of the prototype for comparable conditions. It therefore can be assumed that the model provided quantitative answers concerning the effects of the proposed plans on the hydraulic and salinity regimens of the estuary. (Author).

Download or read book Columbia River Estuary Hybrid Model Studies written by William H. McAnally and published by . This book was released on 1983 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Columbia River at the Mouth Navigation Channel Improvements OR WA written by and published by . This book was released on 1983 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Field and Laboratory Studies Navigation Channels of the Columbia River Estuary written by Morrough Parker O'Brien and published by . This book was released on 1971 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: A model of the estuary of the Columbia River was built and tested at the University of California, Berkeley, during the years 1932 to 1936 to study the effect of proposed changes in the navigation channels on the currents and sediment movement. The report deals primarily with the model itself and not with the practical problems of channel maintenance and improvement, but some information regarding the regimen of the Columbia is necessary background for understanding the problems which were to be studied in the model. (Author).