Water Quality of the Lower Columbia River Basin PDF Download
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Author:
Publisher:
ISBN:
Category : Nutrient pollution
Languages : en
Pages : 170
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Author:
Publisher:
ISBN:
Category : Nutrient pollution
Languages : en
Pages : 170
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Author: United States. Public Health Service
Publisher:
ISBN:
Category : Columbia River
Languages : en
Pages : 40
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Author: John Francis Santos
Publisher:
ISBN:
Category : Water
Languages : en
Pages : 88
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 532
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Author: United States. National Water Commission
Publisher:
ISBN:
Category : Water resources development
Languages : en
Pages : 206
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Author: Frederic F. Fish
Publisher:
ISBN:
Category : Water
Languages : en
Pages : 70
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Author: Valerie J. Kelly
Publisher:
ISBN:
Category : Flood dams and reservoirs
Languages : en
Pages : 4
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Author: United States. Federal Water Pollution Control Administration. Northwest Region
Publisher:
ISBN:
Category : Water
Languages : en
Pages : 80
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Author: National Research Council
Publisher: National Academies Press
ISBN: 0309091551
Category : Technology & Engineering
Languages : en
Pages : 261
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Flows of the Columbia River, although modified substantially during the twentieth century, still vary considerably between seasons and between years. Lowest flows tend to occur during summer months when demand for irrigation water is at its highest and when water temperatures are greatest. These periods of low flows, high demand, and high temperature are critical periods for juvenile salmon migrating downstream through the Columbia River hydropower system. Although impacts on salmon of any individual water withdrawal may be small, the cumulative effects of numerous withdrawals will affect Columbia River flows and would pose increased risks to salmon survival. The body of scientific knowledge explaining salmon migratory behavior and physiology is substantial, but imperfect, and decision makers should acknowledge this and be willing to take action in the face of uncertainties. In order to provide a more comprehensive water permitting process, the State of Washington, Canada, other basin states, and tribal groups should establish a basin-wide forum to consider future water withdrawal application permits. If the State of Washington issues additional permits for water withdrawals from the Columbia River, those permits should contain provisions that allow withdrawals to be curtailed during critical high-demand periods.
Author:
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ISBN:
Category : Water-supply
Languages : en
Pages : 26
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