Author : Joseph R. Gauley
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.31/5 ( download)
Book Synopsis Effect of Fishway Slope on Rate of Passage of Salmonids by : Joseph R. Gauley
Download or read book Effect of Fishway Slope on Rate of Passage of Salmonids written by Joseph R. Gauley and published by . This book was released on 1960 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study on the effect of fishway slope on rate of passage of salmonids was made by comparing passage time of fish in two fishways with different slopes. It is based mainly on steelhead (Salmo gairdneri) but includes some chinook (Oncorhynchus tshawytscha) and silver (Oncorhynchus kisutch) salmon. Both fishways were pool-and-overfall type in which 6 feet of elevation was gained. Passage of steelhead in the 1:8-slope fishway was in general, as fast as or faster than in the 1:16-slope fishway. In the 1:8-slope fishway, the passage time appeared to increase with an increase in rise between pools. In the 1:16-slope fishway, the passage time of steelhead increased as the season progressed.