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21. [Article] Umpqua river basin
The purpose of this 1958 report is to implement the water resources policy of the State of Oregon, as prescribed in ORS 536.300.Citation -
File no. 16.1092
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23. [Article] Umpqua drainage basin silver salmon spawning areas : Map
File no. 16.1092Citation -
The fitness of female Pacific salmon (Oncorhynchus spp.) with respect to breeding behavior can be partitioned into at least four components: survival to reproduction, competition for breeding sites, success ...
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"The fish management plan for the North Umpqua River system (below Soda Springs Dam) is designed to promote effective management of the fish resources in that river. It is prepared to inform interested ...
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Prepared in cooperation with Douglas County
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Barriers to the movement of aquatic organisms can increase the genetic and spatial isolation of populations and may decrease the viability of these regional populations. Focus on culvert passage issues ...
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28. [Article] Deer Creek Watershed assessment and action plan
The Deer Creek Watershed Assessment process has been followed by a group of local landowners. The organization of this document was constructed as a combination of the informational needs of the Deer Creek ...Citation -
Tiller Reservoir In an average year the reservoir is capable of holding water temperatures in South Umpqua River below 70° F. for a wide range of regulation schedules. In a year of maximum temperature, ...
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The extensive reduction in adult Pacific lamprey (Entosphenus tridentatus) counts at many hydroelectric dams in the northwestern USA signals a substantial decline in lamprey numbers across the entire region ...
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