亚开行-自由流动的河流：亚行资助项目的筛选和评估指南（英）

ASIAN DEVELOPMENT BANKFREE-FLOWING RIVERS SCREENING AND ASSESSMENT GUIDANCE FOR ADB-FINANCED PROJECTSDECEMBER 2025ASIAN DEVELOPMENT BANKFREE-FLOWING RIVERS SCREENING AND ASSESSMENT GUIDANCE FOR ADB-FINANCED PROJECTSDECEMBER 2025 Creative Commons Attribution 3.0 IGO license (CC BY 3.0 IGO)© 2025 Asian Development Bank6 ADB Avenue, Mandaluyong City, 1550 Metro Manila, PhilippinesTel +63 2 8632 4444; Fax +63 2 8636 2444www.adb.orgSome rights reserved. Published in 2025. ISBN 978-92-9277-618-3 (print); 978-92-9277-619-0 (electronic); 978-92-9277-620-6 (ebook)Publication Stock No. TIM250543-2DOI: http://dx.doi.org/10.22617/TIM250543-2 The views expressed in this publication are those of the authors and do not necessarily reflect the views and policies of the Asian Development Bank (ADB) or its Board of Governors or the governments they represent. ADB does not guarantee the accuracy of the data included in this publication and accepts no responsibility for any consequence of their use. The mention of specific companies or products of manufacturers does not imply that they are endorsed or recommended by ADB in preference to others of a similar nature that are not mentioned.By making any designation of or reference to a particular territory or geographic area in this document, ADB does not intend to make any judgments as to the legal or other status of any territory or area.This publication is available under the Creative Commons Attribution 3.0 IGO license (CC BY 3.0 IGO) https://creativecommons.org/licenses/by/3.0/igo/. By using the content of this publication, you agree to be bound by the terms of this license. For attribution, translations, adaptations, and permissions, please read the provisions and terms of use at https://www.adb.org/terms-use#openaccess.This CC license does not apply to non-ADB copyright materials in this publication. If the material is attributed to another source, please contact the copyright owner or publisher of that source for permission to reproduce it. ADB cannot be held liable for any claims that arise as a result of your use of the material.Please contact pubsmarketing@adb.org if you have questions or comments with respect to content, or if you wish to obtain copyright permission for your intended use that does not fall within these terms, or for permission to use the ADB logo.Corrigenda to ADB publications may be found at http://www.adb.org/publications/corrigenda.Note: In this publication, “$” refers to United States dollars.Cover design by Edith Creus. On the cover: Tina River, Guadalcanal, Solomon Islands (photo by Francesco Ricciardi). FIGURES AND BOX ivABBREVIATIONS v1 INTRODUCTION 11.1 Context 12 DEFINITION AND IDENTIFICATION OF FREE-FLOWING RIVERS 22.1 Definition of a Free-Flowing River 22.2 Identification Approach 22.3 Data Verification Tasks 32.4 Method Refinements Reflecting Ecological Priorities 63 SCREENING AND DUE DILIGENCE GUIDANCE FOR PROJECTS POTENTIALLY 7 AFFECTING FREE-FLOWING RIVERS3.1 Phase 1: