Model Studies of Navigation Improvements, Columbia River Estuary. Report I. Hydraulic and Salinity Verification.
Abstract
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1968
- Accession Number
- AD0720545
Entities
People
- Frank A. Herrmann Jr.