Distribution of Dissolved Pesticides and Other Water Quality Constituents in Small Streams, and Their Relation to Land Use, in the Willamette River Basin, Oregon, 1996

Distribution of Dissolved Pesticides and Other Water Quality Constituents in Small Streams, and Their Relation to Land Use, in the Willamette River Basin, Oregon, 1996 PDF Author: Chauncey W. Anderson
Publisher:
ISBN:
Category : Pesticides
Languages : en
Pages : 102

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Water-resources Investigations Report

Water-resources Investigations Report PDF Author:
Publisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 40

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Water Quality in the Willamette Basin, Oregon, 1991-95

Water Quality in the Willamette Basin, Oregon, 1991-95 PDF Author: Dennis A. Wentz
Publisher: Geological Survey (USGS)
ISBN:
Category : Science
Languages : en
Pages : 40

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Pesticides in the Lower Clackamas River Basin, Oregon, 2000-01

Pesticides in the Lower Clackamas River Basin, Oregon, 2000-01 PDF Author: Kurt D. Carpenter
Publisher:
ISBN:
Category : Pesticides
Languages : en
Pages : 38

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Water Quality of the Albemarle-Pamlico Drainage Basin, North Carolina, and Virginia, 1992-95

Water Quality of the Albemarle-Pamlico Drainage Basin, North Carolina, and Virginia, 1992-95 PDF Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 354

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Selected Elements and Organic Chemicals in Streambed Sediment in the Salem Area, Oregon, 1999

Selected Elements and Organic Chemicals in Streambed Sediment in the Salem Area, Oregon, 1999 PDF Author: Dwight Q. Tanner
Publisher:
ISBN:
Category : Contaminated sediments
Languages : en
Pages : 52

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U.S. Geological Survey Circular

U.S. Geological Survey Circular PDF Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 356

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Probability of Detecting Elevated Concentrations of Nitrate in Ground Water in a Six-county Area of South-central Idaho

Probability of Detecting Elevated Concentrations of Nitrate in Ground Water in a Six-county Area of South-central Idaho PDF Author: Kenneth D. Skinner
Publisher:
ISBN:
Category : Electronic government information
Languages : en
Pages : 154

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Monitoring Ecological Condition in the Western United States

Monitoring Ecological Condition in the Western United States PDF Author: Shabeg S. Sandhu
Publisher: Springer Science & Business Media
ISBN: 9401143439
Category : Science
Languages : en
Pages : 466

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The monitoring of point sources by the Environmental Protection Agency (EPA), the states, and the tribes has documented and helped reduce the levels of chemical stressors affecting our ecosystems. With the controls on point sources reducing chemical contamination, new environmental challenges associated with nonpoint sources have emerged. To adequately deal with these new problems, EPA's Office of Research and Development recognized the need to develop an overall under standing of the condition of our ecological resources, the trends in their condition, and the stressors affecting these systems on a broad scale. Toward this end, the En vironmental Monitoring and Assessment Program (EMAP) was established by EPA and has been strategically developing the scientific tools and techniques to monitor and assess the status and trends of aquatic ecosystems. EMAP scientists have developed new indicators and probability-based de signs to fill data gaps in the development of regional-scale assessments of our aquatic resources, as required in the Clean Water Act. We have a scientifically de fensible approach that allows: 100 percent coverage of the aquatic resources within broad geographic areas and the formulation of reference 'conditions for es tablishing the health of these resources. The use of these indicators and designs were successfully demonstrated in the landscapes, streams, and estuaries of the mid-Atlantic states as part of the Mid-Atlantic Integrated Assessment (MAlA).

Publications of the Geological Survey

Publications of the Geological Survey PDF Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 400

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