Root Zone Water Quality Model
Root Zone Water Quality Model

Author: Lajpat Ahuja

Publisher: Water Resources Publication

Published: 2000

Total Pages: 388

ISBN-13: 9781887201087

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This publication comes with computer software and presents a comprehensive simulation model designed to predict the hydrologic response, including potential for surface and groundwater contamination, of alternative crop-management systems. It simulates crop development and the movement of water, nutrients and pesticides over and through the root zone for a representative unit area of an agricultural field over multiple years. The model allows simulation of a wide spectrum of management practices and scenarios with special features such as the rapid transport of surface-applied chemicals through macropores to deeper depths and the preferential transport of chemicals within the soil matrix via mobile-immobile zones. The transfer of surface-applied chemicals (pesticides in particular) to runoff water is also an important component.

Confronting the Nation's Water Problems
Confronting the Nation's Water Problems

Author: National Research Council

Publisher: National Academies Press

Published: 2004-10-14

Total Pages: 324

ISBN-13: 030916589X

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In order to confront the increasingly severe water problems faced by all parts of the country, the United States needs to make a new commitment to research on water resources. A new mechanism is needed to coordinate water research currently fragmented among nearly 20 federal agencies. Given the competition for water among farmers, communities, aquatic ecosystems and other users-as well as emerging challenges such as climate change and the threat of waterborne diseases-Confronting the Nation's Water Problems concludes that an additional $70 million in federal funding should go annually to water research. Funding should go specifically to the areas of water demand and use, water supply augmentation, and other institutional research topics. The book notes that overall federal funding for water research has been stagnant in real terms for the past 30 years and that the portion dedicated to research on water use and social science topics has declined considerably.

Water Quality Research, the President's Initiative
Water Quality Research, the President's Initiative

Author: U. S. Agricultural Research Service

Publisher: Forgotten Books

Published: 2018-09-11

Total Pages: 80

ISBN-13: 9781396153549

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Excerpt from Water Quality Research, the President's Initiative: Program Review and Evaluation, 1992; Priority Components; Comprehensive Report, South Region The use of pesticides. Fertilizers, manures and wastes contributes substantially to the productivity and efficiency of agriculture and to the well-being of rural and urban communities. There are concerns. However, about contaminant risk to human health. Water quality. And an ecologically stable environment. The President's Initiative on Water Quality was initiated in 1990 to provide new and expanded emphasis on the protection and enhancement of our water resources. This action provided major impetus to the usda Water Quality Research Plan developed jointly and implemented in 1989 by the Agricultural Research Service (ars). The Cooperative State Research Service (csrs). The State agricultural experiment stations and other agencies. The need for a far reaching research effort on water quality problems related to agriculture was recognized, fostering an effective partnership accomplished through collaborative administrative and research efforts among usda, us. Geological Survey. The Environmental Protection Agency, and State experiment stations. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Mississippi River Water Quality and the Clean Water Act
Mississippi River Water Quality and the Clean Water Act

Author: National Research Council

Publisher: National Academies Press

Published: 2008-02-08

Total Pages: 252

ISBN-13: 0309177812

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The Mississippi River is, in many ways, the nation's best known and most important river system. Mississippi River water quality is of paramount importance for sustaining the many uses of the river including drinking water, recreational and commercial activities, and support for the river's ecosystems and the environmental goods and services they provide. The Clean Water Act, passed by Congress in 1972, is the cornerstone of surface water quality protection in the United States, employing regulatory and nonregulatory measures designed to reduce direct pollutant discharges into waterways. The Clean Water Act has reduced much pollution in the Mississippi River from "point sources" such as industries and water treatment plants, but problems stemming from urban runoff, agriculture, and other "non-point sources" have proven more difficult to address. This book concludes that too little coordination among the 10 states along the river has left the Mississippi River an "orphan" from a water quality monitoring and assessment perspective. Stronger leadership from the U.S. Environmental Protection Agency (EPA) is needed to address these problems. Specifically, the EPA should establish a water quality data-sharing system for the length of the river, and work with the states to establish and achieve water quality standards. The Mississippi River corridor states also should be more proactive and cooperative in their water quality programs. For this effort, the EPA and the Mississippi River states should draw upon the lengthy experience of federal-interstate cooperation in managing water quality in the Chesapeake Bay.