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Author : United States. Public Health Service
Publisher :
Page : 40 pages
File Size : 40,15 MB
Release : 1961
Category : Columbia River
ISBN :
Author :
Publisher :
Page : 170 pages
File Size : 17,70 MB
Release : 1996
Category : Nutrient pollution
ISBN :
Author :
Publisher :
Page : 248 pages
File Size : 50,49 MB
Release : 1960
Category : Water quality
ISBN :
Author :
Publisher :
Page : 532 pages
File Size : 21,41 MB
Release : 1996
Category :
ISBN :
Author : United States. Public Health Service. Pacific Northwest Drainage Basins Office. Division of Water Pollution Control
Publisher :
Page : 127 pages
File Size : 25,67 MB
Release : 1952
Category : Columbia River Watershed
ISBN :
Author : National Research Council
Publisher : National Academies Press
Page : 261 pages
File Size : 34,3 MB
Release : 2004-08-27
Category : Technology & Engineering
ISBN : 0309091551
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 : United States. Army. Corps of Engineers. Portland District
Publisher :
Page : pages
File Size : 26,6 MB
Release : 2020
Category : Water quality
ISBN :
Author : Michael C. Blumm
Publisher :
Page : 392 pages
File Size : 39,45 MB
Release : 1997
Category : Water
ISBN :
Author : U.S. Environmental Protection Agency
Publisher : BiblioGov
Page : 188 pages
File Size : 37,88 MB
Release : 2013-10
Category :
ISBN : 9781295024162
The U.S. Environmental Protection Agency (EPA) was introduced on December 2, 1970 by President Richard Nixon. The agency is charged with protecting human health and the environment, by writing and enforcing regulations based on laws passed by Congress. The EPA's struggle to protect health and the environment is seen through each of its official publications. These publications outline new policies, detail problems with enforcing laws, document the need for new legislation, and describe new tactics to use to solve these issues. This collection of publications ranges from historic documents to reports released in the new millennium, and features works like: Bicycle for a Better Environment, Health Effects of Increasing Sulfur Oxides Emissions Draft, and Women and Environmental Health.
Author :
Publisher :
Page : 120 pages
File Size : 10,56 MB
Release : 1979
Category :
ISBN :