Conference proceeding
Physical model studies of a spillway bulkhead for passage of downstream migrating juvenile salmonids
RIVERTECH '96 - 1ST INTERNATIONAL CONFERENCE ON NEW/EMERGING CONCEPTS FOR RIVERS, PROCEEDINGS, VOLS 1 AND 2: CELEBRATING THE TWENTY-FIFTH ANNIVERSARY OF IWRA, pp.579-586
1996
Abstract
Development of fingerling bypass systems on the Snake and Columbia Rivers has been on going for the past twenty years. Although widely installed, intake screens have recently lost the support of resource agencies due to large seasonal variations in effectiveness. Recent model and prototype tests have focused on concepts that collect fish in the forebay prior to entering the turbine intake slots. The paper will describe a physical model study used to evaluate conceptual designs aimed at collection and bypass of juvenile salmonids at larger hydropower structures on the Columbia River. Specifically, the paper will focus on the prototype spillway passage facility at Wanapum Dam.
Studies have been performed using a 1:21.5 scale physical model to evaluate the hydraulic and biological characteristics of a spillway bulkhead. The final bulkhead design operates with a four slot overflow weir discharging water into a well confined on the downstream side by the original spillway radial gate. Concerns of generating flow induced vibrations on the radial gate required that a methodology be established to carefully compare various conceptual designs. The methodology was established by comparing field observations on gate vibrations with measures of relative turbulence in the model. The paper will present details of the final bulkhead design, a description of the test methodology used for evaluation and a comparison of field and model data.
Details
- Title: Subtitle
- Physical model studies of a spillway bulkhead for passage of downstream migrating juvenile salmonids
- Creators
- L J WeberR Elder
- Contributors
- G E Stout (Editor)
- Resource Type
- Conference proceeding
- Publication Details
- RIVERTECH '96 - 1ST INTERNATIONAL CONFERENCE ON NEW/EMERGING CONCEPTS FOR RIVERS, PROCEEDINGS, VOLS 1 AND 2: CELEBRATING THE TWENTY-FIFTH ANNIVERSARY OF IWRA, pp.579-586
- Language
- English
- Date published
- 1996
- Academic Unit
- Civil and Environmental Engineering
- Record Identifier
- 9984232115802771
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