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1501 - 1525 of 2700 Items << < 56 57 58 59 60 61 62 63 64 65 > >>
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Fish assemblage structure was determined along a longitudinal
gradient for three drainages in the upper John Day basin: Middle
Fork, South Fork, and upper Mainstem proper. One or two tributaries
in each drainage were included. Where possible,...
1992-06-24 (iso8601)
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Bird predation of juvenile salmonids and/or bird predation control are reviewed for 14 of the 18
mainstem dams on the Columbia and Snake Rivers, but there was little information for some of these dams.
California gulls, ring-billed gulls, Caspian...
2003-02 (iso8601)
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The purpose of this pilot program was to determine whether or not forward looking infrared (FLIR) videography could be used to develop thermal maps of the mainstem Klamath River to access habitat limitations due to high stream temperatures for...
1998-12-18 (iso8601)
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Ceratomyxa shasta is a myxozoan parasite of salmonids and requires the freshwater polychaete, Manayunkia speciosa to complete its life cycle. The parasite’s distribution is currently limited to the Pacific Northwest region of North America and has...
2006-04-18T20:29:22Z (iso8601)
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Columbia River wheat, flour, and salmon, fleet, 1885—'86—Continued.
Flag and rig. Vessel. Tons. Sailed. Cleared for— Wheat. Flour. Salmon. Value. Final destination.
Centals. Barrels. Cases.
British bark No Cross 897 Dec. 12...
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only again occasionally touches it at a few particular falls or rapids, such as at the mouth of the Salmon, where the natives go to fish. The other approaches, few and far between, are only used by the Indians, while herding their horses and...
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Source
WI-71 F-17
Tentative Disposition
C
C
WI-70 F-17
Problem or Area of Concern
2. Need evaluation of fish-carrying capacity of streams both downstream and upstream.
COMMENT: The adult carrying capacity of salmon...
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and finally, but by no means least of them, the Columbia River in the Northwest . . . And from there, my friends, in each of the four quarters of the United States, there will exist forever a National yardstick to prevent extortion against the...
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which the water would pass would probably lead to long-term cyclic storage in the final development.
Okanogan River Basin Present Development
In the part of the Okanogan River Basin within the United States, nearly full economic utilization of...
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CHAPTER IV
Upper Snake GENERAL DESCRIPTION The upper Snake Basin embraces the eastern two-thirds of the crescentic Snake River Valley, which reaches westward across southern Idaho from the river's source in Wyoming. This basin is about 300... |
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C. A Brave New Energy World
Many of the most difficult questions that face the Basin have to do with the hydropower system. Decisions over river operations and reservoir drawdowns are coming. Science notwithstanding, these decisions involve big...
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biologists, microorganisms may be more significant than animals, and the overall structure and complexity of an ecological system are more important than individual species.' Salmon protection can tend to emphasize what Aldo Leopold called "show...
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In putting these transactions, together, the Bureau cited a number of lessons: Decisions had to be made about whether to treat an acquisition as akin to a land title acquisition (logical for acquiring a natural flow right) or a contract matter...
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programs and to adjust subsequent efforts accordingly.83 Because of concerns over the effects of hatcheries, adaptive management was especially important in implementing artificial production projects. Other parts of the program called for...
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that 80 percent of 153 Oregon tributaries had low-flow problems (two-thirds of which were caused at least in part by irrigation withdrawals).17 A 1992 analysis of water problems affecting fish production showed similar problems in many Idaho,...
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VV-84 SNAKE RIVER, OREG., WASH., AND IDAHO.
Part. Title. Period. Appropriations.
a Snake R. (above Lewiston) 1881-1885
b Snake It., Asotin to Pittsburg Landing 1899-1900
c Snake R. (upper) 1890-1896 $45,000.00
Total 45,000.00...
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Upper Stanley, Idaho
Valley Creek in foreground with Sawtooth Mountains in the background |
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Left trap at the Rock Island Dam during the summer
1938-11-30
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Master scanned with Epson 1640XL at 800 dpi. Image manipulated with Adobe Photoshop 7.0.
1936-10-31
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Little Red fish on spawning grounds in Alturus Lake Creek
1935-09-08
2003-01-01 |
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Master scanned with Epson 1640XL at 800 dpi. Image manipulated with Adobe Photoshop 7.0.
1935-09-07
2003-01-01 |
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Washout in small creek a short distance below Rapid River
A big pool larger than 1/4 mile long was formed in this manner
1941-07-17
2003-01-01 |
