2002, ISBN: 9781234418564

RareBooksClub. Paperback. New. This item is printed on demand. Paperback. 70 pages. Original publisher: Portland, Ore. : Northwest Power Planning Council, 2002 OCLC Number: (OCoLC)1802… Mehr…

RareBooksClub. Paperback. New. This item is printed on demand. Paperback. 70 pages. Original publisher: Portland, Ore. : Northwest Power Planning Council, 2002 OCLC Number: (OCoLC)180251621 Subject: Pacific salmon -- Habitat -- Columbia River Watershed. Excerpt: . . . 1 More specific objectives and performance standards - for habitat characteristics 2 and for population performance ( cont. ) 3 Migration passage conditions for anadromous fish 4 5 6 The National Marine Fisheries Services 2000 Biological Opinion includes 7 project-by-project survival performance rates for in-river passage of affected life 8 stages of listed salmon and steelhead through the eight federal dams in the lower 9 Columbia and lower Snake rivers. Table 9. 2-3. The program adopts these objectives. Achieve these objectives at the minimum economic cost. 10 11 12 On an interim basis, the project-by-project survival performance rates also apply for inriver passage of affected life stages of non-listed salmon and steelhead that 13 14 migrate through the system. The Council will consult with the state and federal fish and wildlife agencies and tribes, the Independent Scientific Advisory Board 15 federal operating agencies ( a ) to evaluate whether these project-by-project 16 17 performance rates should be adjusted for any affected, non-listed populations, ( b ) to evaluate whether to adopt project-by-project passage survival performance 18 19 rates for the non-federal projects in the mid-Columbia area, and ( c ) to determine 20 the possibility of adopting system survival performance rates for all relevant 21 populations. 22 23 Maximize spillway survival by selecting the most biologically effective level of spillway discharge at each specific project while not exceeding interim gas 24 3 25 supersaturation standards. Balance spillway survival probabilities against spillway passage efficiency and the efficiency and probabilities of other passage 26 routes in order to determine the passage methods, including spill volumes, that 27 maximize the survival of the fish passin. . . This item ships from La Vergne,TN., RareBooksClub<