Environmental impact assessment of irrigation and drainage projects

Environmental Impact Assessment Of Irrigation and Drainage Projects
Contents
by T.C. Dougherty & A.W. Hall HR Wallingford United Kingdom 53 FAO IRRIGATION AND DRAINAGE PAPER The designations employed and the presentation of material in this publication do not imply the expression of any opinion whatsoever on the part of the Food and Agriculture Organization of the United Nations concerning the legalstatus of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. M-56 ISBN 92-5-103731 -0 All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying or otherwise, without the prior permission of the copyright owner. Applications for such permission, with a statement of the purpose and extent of the reproduction, should be addressed to the Director, Publications Division, Food and Agriculture Organization of the United Nations, Viale delle Terme di Caracalla, 00100 Rome, Italy. © FAO 1995
CONTENTS
Preface Acknowledgements List of abbreviations
Chapter 1: Introduction
The need for environmental assessment Objective Using the guide
Chapter 2: The context of environmental analysis
Policy framework Social context Institutional framework and EIA Legal framework for EIA Building institutional capacity To carry out an EIA To implement the recommendations of an EIA
Chapter 3: EIA process
Resources Screening Scoping Prediction and mitigation Management and monitoring Auditing Public participation Managing uncertainty Techniques Baseline studies The ICID Check-list Matrices Network diagrams Overlays Mathematical modelling Expert advice Economic techniques Final report - Environmental impact statement
Chapter 4: Major impacts of irrigation and drainage projects
Hydrology Low flow regime Flood regime Operation of dams Fall of water table Rise of water table Water and air quality Solute dispersion Toxic substances Agrochemical pollution Anaerobic effects Gas emissions Soil properties and safety erects Soil salinity Soil properties Saline groundwater Saline drainage Saline intrusion Erosion and sedimentation Local erosion Hinterland effect River morphology Channel structures Sedimentation Estuary erosion	Biological and ecological change Project lands Water bodies Surrounding area Valleys and shores Wetlands and plains Socio-economic impacts Population change Income and amenity Human migration Resettlement Women's role Minority groups Sites of value Regional effects User involvement Recreation Ecological imbalances Pests and weeds Animal diseases Aquatic weeds Human health Disease ecology Specific risks and counter measures Health opportunities
Chapter 5: Preparation of terms of reference
Determining study requirements Contents of the TOR
Chapter 6: References
Recommended texts Bibliography
Annex I: Glossary