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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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Altered sediment and flow regimes in regulated rivers limit available spawning habitat for many fishes, especially salmonids. Mitigation efforts include spawning habitat rehabilitation and dam‐removal, but often neglect conceptual or predictive...
2004-08-01
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Altered sediment and flow regimes in dammed and regulated rivers limit available spawning habitat to salmonids. River managers have attempted rehabilitation of spawning habitat with gravel augmentation and riffle construction projects, but often...
2002-12-01
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Repeat topographic surveys are increasingly becoming more affordable, and possible at higher spatial resolutions and over greater spatial extents. Digital elevation models (DEMs) built from such surveys can be used to produce DEM of Difference...
2010-02-01
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Availability of Bonneville cutthroat trout (BCT - Oncorhynchus clarki Utah) habitat continues to decline in the Great Basin due to a lack of stream connectivity, over allocation of water resources, and detrimental land use practices. The Logan...
2011-01-01
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Recent salmon restoration and rehabilitation efforts have focused on reintroducing spawning gravels to rivers whose sediment supplies have been blocked or altered by dams, land-use changes and altered flow regimes. Few of these projects have...
2001-12-01
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Few sources exist to draw generalizations about the incredibly diverse international river restoration community. Generalizations in the restoration literature tend to be grounded on individual experiences or logical conjecture. To fill this...
2006-06-01
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The last decade has witnessed a resurgence of interest in morphological estimation of fluvial sediment budgets, facilitated by major advances in survey technology, including airborne lidar and photogrammetry and ground-based GPS. The reliability...
2004-12-01
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This report was prepared by the U.S. Geological Survey in cooperation with the States of California, Idaho, Nevada, Oregon, Utah, and Wyoming, with the other agenencies, by personnel of the Water Resources Division, E.L. Hendricks, chief...
1970-01-01
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The limnology of Jackson Lake has been studied very little, despite the fact that it is the uppermost large lake on the headwaters of the Snake River, one of the larger rivers in the country (Hayden 1969). It is also an important fishery, largely...
2014-10-27
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The Great Salt Lake lies in a terminal basin, and thus accumulates nutrients and other pollutants produced in its watershed. With the growth of communities in the Wasatch Front, ever-increasing stress is being placed on the lake. Farmington Bay,...
2004-03-25
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Two major causeways that divide the Great Salt Lake have radically changed salt balances in different sections of the lake, and have caused deep brine layers to form. For you scrabble buffs, limnologists call these layers “monimolimnions”. In 1959...
2014-01-01
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How is nitrate retained, transformed, and transported downstream by stream-lake linkages in mountain watersheds with relatively low nitrate inputs? The answer is important for understanding the effects of elevated N deposition on lakes and streams...
2004-01-01
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