00000cam 2200000zi 4500 9.959457 CaOODSP 20260202144208 m o d f cr |n||||||||| 260130e198112##nscdab ob f|0| 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-ns Fs97-4/1632E-PDF Fs97-4/1632E Sweeney, R. K., author. Evaluation of a free-fall apparatus for downstream passage of Atlantic salmon (Salmo salar L.) / R.K. Sweeney and R.J. Rutherford. Halifax, Nova Scotia : Freshwater and Anadromous Division, Resource Branch, Department of Fisheries and Oceans, December 1981. ©1981 1 online resource (vii, pages) : charts, illustrations, maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier Canadian manuscript report of fisheries and aquatic sciences, 0706-6473 ; 1632 Digitized edition from print [produced by Department of Fisheries and Oceans]. Includes bibliographical references. "The design of economical, downstream-passage facilities for Atlantic salmon (Salmo salar) kelts and smolts at hydroelectric dams often includes a free fall to the tailrace. To determine the height of fall which could be tolerated by this species without immediate mortality, kelts and smolts were dropped from a plywood flume with a water discharge of 0.42 M3 /sec. The smolts were dropped a vertical distance of 18.0 m, while the kelts, both grilse and older salmon, were dropped from both 10.6 m and 18.0 m. Survival was dependent upon impact velocity, with fatal injuries occurring above 15.2 m/sec. The experimental results indicate that this velocity would be reached when smolts fell 21 m, grilse kelts 18 m and salmon kelts 16 m"--Abstract, page vii. Includes abstracts in English and French. Atlantic salmon Nova Scotia. Fishways Nova Scotia. Saumon atlantique Nouvelle-Écosse. Passes migratoires Nouvelle-Écosse. Canada. Department of Fisheries and Oceans. Maritimes Region. Freshwater and Anadromous Division, issuing body. Canadian manuscript report of fisheries and aquatic sciences ; 1632. (CaOODSP)9.505211 PDF 542 KB https://publications.gc.ca/collections/collection_2026/mpo-dfo/fs97-4/Fs97-4-1632-eng.pdf