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376 - 400 of 481 Items << < 11 12 13 14 15 16 17 18 19 20 > >>
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The Middle Fork John Day Basin in Northeastern Oregon is prime habitat for spring Chinook salmon and Steelhead trout. In 2008, a major tributary supporting rearing habitat, Big Boulder Creek, was restored to its historic mid-valley channel along a...
2011-11-08 (iso8601)
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by watershed.41 The 1993 plan for the Middle Snake noted that the State Water Plan specifies zero flows at Milner, but committed to work for higher flow levels to "improve some aspects of water quality and fish habitat, and restore some of the...
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Collection consists of photographs taken of a
survey that included streams and lakes in Arizona, Utah, New Mexico, Nevada, Idaho,
Wyoming, and Montana. Many photos show fish shelters, rip-rapping, stream...
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by watershed.41 The 1993 plan for the Middle Snake noted that the State Water Plan specifies zero flows at Milner, but committed to work for higher flow levels to "improve some aspects of water quality and fish habitat, and restore some of the...
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The Paul Helsing Papers consists of charts, manuscripts, maps, financial records, news clippings, legislative materials, and correspondence relative to the influence of Columbia River dams on salmon and other fish, and to fisheries in the river.;...
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I assessed downstream migration of age 0+ chinook salmon from stream channels with rock and rubble (good) or gravel or shale (poor) substrates and constant or declining water temperatures during the fall months of 1970 and 1971. As water...
1972-06-01
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Harlequin ducks (Histrionicus histrionicus) were observed during
the summers of 1979 and 1980 in Sawmill Bay, northeast Prince William
Sound, Alaska. Harlequins were associated with a short, medium gradient,
non-glacial stream (Stellar Creek) also...
1982-03-08 (iso8601)
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Forested lands of western Oregon provide aquatic habitat for many fish and riparian dependent species, including a wide variety of salmon species. Current policies set riparian protections using fixed buffers on streams for federal and private...
2013-03-15 (iso8601)
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Reproductively and geographically isolated populations of predators may be synchronized by a phenomenon known as the Moran effect—specifically if they exhibit common responses to external processes, such as climate, density dependence (parasites,...
2016-02 (iso8601)
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Aquatic ecosystems continue to be increasingly affected by climate warming. For salmonids in the Pacific Northwest of North America, increasing temperatures pose tighter thermal constraints on their habitat use as well as aspects of their...
2013-03-08 (iso8601)
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On November 19, 1998 (OSB1998-0088), the National Marine Fisheries Service (NMFS) completed an Endangered Species Act (ESA) section 7 informal consultation with Oregon Department of Transportation (ODOT) for the Charlotte Creek Quarry Rock...
2000-08-01 (iso8601)
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2008-11-04
2008-11-04 2024-05-19 |
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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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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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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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This collection contains research
materials used and compiled by Intaglio, Inc. during the research and writing
of the U.S. Forest Service publication
The National Forests of the Northern Region: Living
Legacy.; Historical Note;...
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for structural solutions at the Mid-Columbia hydropower projects and securing flow protections for Hanford Reach fall chinook, one of the most productive populations in the river.81
Seeking to complement these activities, the Northwest Power Act...
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The Jack Hutchinson Papers are comprised of materials generally related to fly fishing in the Pacific Northwest, as well as those reflecting Hutchinson’s interest in collecting fly fishing books and materials, his participation in a number of...
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The Robert J. Behnke Papers include a vast array of created
and collected material representing his many years as a consultant with experts, students
and interested parties on his specialty of studying the trout and salmonid...
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Abstract Marcot, Bruce G.; Wales, Barbara C; Demmer, Rick. 2003. Range maps of terrestrial species in the interior Columbia River basin and northern portions of the Klamath and Great Basins. Gen. Tech. Rep. PNW-GTR-583. Portland, OR: U.S....
2024-05-19
2005-01-24 2004-06-16 |
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In a January 26, 2000 letter, the Portland District Army Corps of Engineers (COE) requested Endangered Species Act (ESA) Section 7 informal consultation with the National Marine Fisheries Service (NMFS) on the proposed issuance of a Clean Water...
2000-04-04 (iso8601)
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This document provides watershed restoration actions proposed to enhance the Coho Salmon population within the Rock Creek / Devils Lake basin in Lincoln County, Oregon. The stream is the principle tributary of Devil’s Lake, a lake of natural...
2003-07-01 (iso8601)
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