Louver Efficiency in Deflecting Downstream Migrant Steelhead
bass, canal, chinook, downstream fish passage, fish diversion, fish passage, louvers, salmon, steelhead, striped bass
Journal or Book Title
Transactions of the American Fisheries Society
Chinook salmon and striped bass in a canal with a total flow capacity of 5,000 c.f.s. are equally applicable for deflecting young steelhead in a canal with a maximum flow capacity of 100 c.f.s. The vertical louver facility was placed on a 20 degree angle, and the length of the louver line was 30 feet and the height 5 feet. The louver slats were installed with 1-inch clear spacing for the first 9 feet and at 0.5-inch clearance for the remaining, or uppermost, 3 feet of the downstream end. Conclusions: 1) application of louver principles proved successful, 2) a vertical louver installation was very effective, 3) physical conditions precluded an adequate trial of the efficiency of a horizontal louver installation.