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401 - 425 of 596 Items << < 12 13 14 15 16 17 18 19 20 21 > >>
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Date of memorandum: August 4, 1948; Includes: "Creel Census Report for July, 1948."; "Donald S. Farner, Ranger-Naturalist."
2024-04-28
2010-05-25 2010-06-14 |
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Date of memorandum: March 3, 1948; "1939 Saprolegnia infestation in Crater Lake;" "Orthello L. Wallis, Ranger-Naturalist."
2008-09-02 2008-12-11 |
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We sampled various limnological parameters and measured growth and diet of age-0 kokanee Oncorhynchus nerka (lacustrine sockeye salmon) during two winters in a high-mountain lake of the Sawtooth Valley, Idaho. Although winter has been recognized...
2003-01-01
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Special scientific report ; no 51
2024-04-28
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Chinooks were killed by fungus infection before spawning on the Entiat River
1938-11-30
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Fish truck at Lake Wenatchee ready to dump load of blue-back salmon
1938-11-30
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Collecting eggs by slitting the belly of ripe female chinook salmon at the Middle Santiam Salmon Hatchery near Foster, Oregon; Archie Anderson and assistant;1940-09-25 From Album 1 page 7
2024-04-28
2003-01-01 |
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Stayton power canal at by-pass Note dead chinook salmon in water;1940-08-06
2024-04-28
2003-01-01 |
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Chinook salmon on riffle at Lois Mill on the Molalla River; 1941-09-16
2024-04-28
2003-01-01 |
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Dams provide water supply, flood protection, and hydropower generation benefits, but also harm native species by altering the natural flow regime and degrading aquatic and riparian habitat. Restoring some rivers reaches to free-flowing conditions...
2014-03-03
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Reservoirs and their associated rivers provide water for agricultural and municipal uses, ecological benefits for fish and wildlife, and associated recreational activity. However, in the Greater Yellowstone Ecosystem climate change and population...
2023-08-01
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During the fall and winter 1979-1980 tests were conducted in a section of the Middle Snake River within Hells Canyon to determine the effects of hydroelectric power peaking on fall chinook salmon (Onchorhycus tshawytscha) embryo incubation and fry...
1981-03-01
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A high-priority research issue identified by the Arctic-Yukon-Kuskokwim (AYK) Sustainable
Salmon Initiative (SSI) is to determine whether the ocean environment is a more important cause of
variation in the abundance of AYK Pacific salmon...
2010-11-30
2010-11-30 2010-11-01 |
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NMFS
2008-11-05
2008-11-05 1981-04-28 |
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Seattle Public Utilites
2008-11-04
2008-11-04 2024-04-28 |
