TAILIEUCHUNG - AGRICULTURAL NONPOINT SOURCE POLLUTION: Watershed Management and Hydrology

Despite the tremendous progress that has been achieved in water pollution, almost 40% of the . waters that have been assessed by states do not meet water quality goals. About 20,000 water bodies are impacted by siltation, nutrients, bacteria, oxygen depletion substances, metals, habitat alterations, pesticides, and toxic organic chemicals. With pollution from point sources being dramatically reduced, nonpoint source pollution is the major cause of most water that does not meet water quality goals. About 50 to 70% of the assessed surface waters are adversely affected by agricultural nonpoint source pollution caused by soil erosion from cropland and overgrazing and from pesticide and fertilizer applica. | AGRICULTURAL NONPOINT SOURCE POLLUTION Watershed Management and Hydrology Edited by William F. Ritter Adel Shirmohammadi LEWIS PUBLISHERS Boca Raton London New York Washington . 2001 by CRC Press LLC Library of Congress Cataloging-in-Publication Data Agricultural nonpoint source pollution watershed management and hydrology edited by William F. Ritter Adel Shirmohammadi p. cm. Includes bibliographical references. ISBN 1-56670-222-4 alk. paper 1. Agricultural pollution--Environmental aspects--United States. 2. Nonpoint source pollution--United States. management--United States. 4. Water quality management--United States. I. Ritter William F. II. Shirmohammadi Adel A362 2000 .684 dc21 00-046349 CIP This book contains information obtained from authentic and highly regarded sources. Reprinted material is quoted with permission and sources are indicated. A wide variety of references are listed. Reasonable efforts have been made to publish reliable data and information but the author and the publisher cannot assume responsibility for the validity of all materials or for the consequences of their use. Neither this book nor any part may be reproduced or transmitted in any form or by any means electronic or mechanical including photocopying microfilming and recording or by any information storage or retrieval system without prior permission in writing from the publisher. All rights reserved. Authorization to photocopy items for internal or personal use or the personal or internal use of specific clients may be granted by CRC Press LLC provided that .50 per page photocopied is paid directly to Copyright Clearance Center 222 Rosewood Drive Danvers MA 01923 USA. The fee code for users of the Transactional Reporting Service is ISBN 0-1-56670-222-4 01 .50. The fee is subject to change without notice. For organizations that have been granted a photocopy license by the CCC a separate system of payment has been arranged. The consent of CRC .

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