Results
1951 - 1975 of 2700 Items << < 74 75 76 77 78 79 80 81 82 83 > >>
1951 - 1975 of 2700 Items << < 74 75 76 77 78 79 80 81 82 83 > >>
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Degree of management. Return to the River encourages "restoration of natural vegetation and ecological processes that create and maintain fish habitat." 57 In an area like the Grande Ronde, this might mean reattaching streams to their floodplains,...
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Interior Columbia Basin Ecosystem Management Project29 on eastside forests are unique experiments, which attempt to bring science and policy development together to address difficult and controversial natural resource issues. There is obvious...
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measure, and potential competitors had to face the reality that building power plants was a risky, expensive undertaking. In recent years, natural gas prices have fallen through the floor, and advances in generating technology have removed-much of...
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replace a less effective screen). Ultimately, the 1994 matrix became a checklist. Priority is now given to projects in "focus areas:" Catherine Creek, the Upper Grande Ronde, Bear Creek, Big Sheep Creek and others in which more sophisticated...
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Spill. One of the ways to allow juvenile fish to get past dams safely is to send them through the dam's spillway instead of through the turbines. Serious problems with nitrogen super-saturation caused by spills in the early 1970s were addressed by...
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Lower Willamette, from Portland to the sea, act of
March 3, 1873 $20, 000
June 23, 1874 20, 000
March 3, 1875 20, 000
August 14, 1876 20,000
June 18, 1878 30, 000
March 3, 1879 45, 000
$155, 000.00 Lower Willamette and Columbia,...
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DAVID THOMPSON, PATHFINDER and the Columbia River BY T. C. ELLIOTT An address given at the Annual Meeting of the Pioneer Association of Stevens County, at Kettle Falls, Washington, June 23, 1911. This anniversary year on the Columbia has special...
2004-07-04
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nigger boy, for a modern pop safety valve has done away with him. The engine is very much up-to-date; the only suggestion of its forefather is found in the wire spark catcher on the smokestack-a sort of tribute to bygone days. Otherwise the boat...
2004-03-02
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Unloading fish truck at dump number 2 on the Entiat River as part of salmon reclamation
1938-11-30
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Ward (Slim) Hendrick, Mildred and Mike Hendrick Dean Chandler holding Timothy Tugmutton
1941-07-30
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Master scanned with Epson 1640XL at 800 dpi. Image manipulated with Adobe Photoshop 7.0.
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Elkhorn Creek is a tributary of Wilson Creek
Very few salmon can get through culvert during high water. Culvert is on the farm of VS Kesterson.
1946-05-22
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12 ft impassable bedrock chute short distance above highway bridge This is topped by a 6 ft dam
1941-04-30
2003-01-01 |
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From John Cobb field notebook: Native set nets (J.) 1917
2024-11-24
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Rehabilitation of salmonid spawning habitat in regulated rivers through spawning bed enhancement is commonly used to mitigate altered sediment and flow regimes and associated declines in salmonid communities. Partial design‐phase predictive...
2004-01-01
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From John Cobb field notebook: Getting the fishing boats ready at P.H.J. 1917
2024-11-24
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Glacial river systems are commonly characterized as being relatively unproductive aquatic environments (Murphy et al. 1989). The Copper River in Alaska, with impressive runs of five Pacific salmon species, appears to defy this commonly held model....
2002-09-01
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River managers often seek to understand habitat availability and quality for riverine organisms within the physical template provided by their landscape. Yet the large amount of natural heterogeneity in landscapes gives rise to stream systems...
2012-12-01
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From John Cobb field notebook:Gill net boats at N.C., Nushagak. 1917.
Possibly the Alaska Packers Association cannery at Clark Point.
2024-11-24
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