GREATER MEKONG SUB-REGION FLOOD AND DROUGHT RISK MANAGEMENT AND MITIGATION PROJECT Consulting Services for Support to the National Flood Forecasting Centre and to Improve Hydraulic Design Standards Contract Number: GMS-FDRMMP-CS-003 INCEPTION REPORT Prepared By: NFFC Consultant Team of EPTISA and KCC Phnom Penh, CAMBODIA May 2016 Greater Mekong Sub-Region Flood and Drought Risk Management and Mitigation Project Support to the National Flood Forecasting Centre Contract Number: GMS-FDRMMP-CS-003 Document history Version Remarks Date Draft Report Draft submitted for review March 02 2016 Final Draft Final Draft submitted for review May 16 2016 Final Incorporated all final comments from May 27 2016 CPMU, PIU/DHRW, PIC and ADB Inception Report - May 2016 Page i Greater Mekong Sub-Region Flood and Drought Risk Management and Mitigation Project Support to the National Flood Forecasting Centre Contract Number: GMS-FDRMMP-CS-003 Table of Contents DOCUMENT HISTORY .................................................................................................................................................. I TABLE OF CONTENTS ................................................................................................................................................ II LIST OF FIGURES ....................................................................................................................................................... III LIST OF TABLES ......................................................................................................................................................... IV LIST OF ACRONYMS AND ABBREVIATIONS ............................................................................................................ V 1. INTRODUCTION ........................................................................................................................................................ 1 2. PROJECT CONTEXT ............................................................................................................................................... 3 3. INSTITUTIONAL SETTING ...................................................................................................................................... 5 3.1 MINISTRY OF WATER RESOURCES AND METEOROLOGY................................................................................... 5 3.2 MEKONG RIVER COMMISSION ...................................................................................................................... 11 4. WORK BREAKDOWN STRUCTURE .................................................................................................................... 13 4.1 WBS-100 INCEPTION REPORT..................................................................................................................... 13 4.2 WBS-100APRELIMINARY FLOOD AND DROUGHT ASSESSMENT ...................................................................... 16 4.2.1 Study Area .......................................................................................................................................... 17 4.3 WBS-200HYDROMETEOROLOGICAL NETWORK AND DATA MANAGEMENT ASSESSMENT ................................. 22 4.4 WBS-300 FORECAST APPROACH AND OPERATIONAL CAPACITY .................................................................... 28 4.5 WBS-400 TECHNICAL SPECIFICATIONS FOR IMPROVEMENTS TO HYDROMETEOROLOGICAL NETWORK AND FORECAST SYSTEM ..................................................................................................................................... 31 4.6 WBS-500 FLOODING AND DROUGHT HAZARD AND RISK ASSESSMENT FOR DIFFERENT PROBABILITIES ........... 33 4.6.1 Floods ................................................................................................................................................. 33 4.6.2 Droughts.............................................................................................................................................. 35 4.7 WBS-600 RESIDUAL RISK ASSOCIATED WITH PROTECTION MEASURES ......................................................... 37 4.8 WBS-700 CLIMATE RESILIENT DESIGN CRITERIA FOR STRUCTURAL FLOOD AND DROUGHT CONTROL ............. 41 4.9 WBS-800IMPROVED FLOOD FORECASTS AND DROUGHT PREDICTIONS ......................................................... 42 4.10 WBS-900 NATIONAL FLOOD FORECASTING CENTRE (NFFC) TRAINING AND CAPACITY DEVELOPMENT ........... 44 4.11 WBS-1000 AN EARLY WARNING STRATEGY AT THE COMMUNITY LEVEL WITH IMPROVED REGIONAL COORDINATION AND COOPERATION .............................................................................................................. 46 4.12 WBS-1100 PROJECT MANAGEMENT AND REPORTING .................................................................................. 48 6. PROJECT SCHEDULE .......................................................................................................................................... 52 7. PROJECT DELIVERABLES .................................................................................................................................. 54 8. REFERENCES ......................................................................................................................................................... 55 APPENDIX 1: SCHEDULE OF EXPERTS .............................................................................................................. 56 APPENDIX 2: HEC-HMS AND HEC-RAS FEATURES .......................................................................................... 58 APPENDIX 3: PROJECT TEAM ............................................................................................................................ 65 APPENDIX 4: TERMS OF REFERENCE ................................................................................................................ 70 Inception Report - May 2016 Page ii Greater Mekong Sub-Region Flood and Drought Risk Management and Mitigation Project Support to the National Flood Forecasting Centre Contract Number: GMS-FDRMMP-CS-003 List of Figures Figure 1: Location Map - Cambodia ............................................................................................................................... 3 Figure 2: River Basin Groups in Cambodia. Source: ADB CDTA-CAM 7610, 2014 ...................................................... 4 Figure 3: Organizational Structure of MOWRAM ........................................................................................................... 7 Figure 4: DHRW Organizational Chart ........................................................................................................................... 8 Figure 5: DOM Organizational Chart .............................................................................................................................. 9 Figure 6: Distribution of Staff by PDOWRAMs ............................................................................................................. 10 Figure 7: River Basins in Cambodia as defined by MOWRAM .................................................................................... 17 Figure 8: Location Map, Topography, and Hydromet Network - Pursat River Basin ................................................... 18 Figure 9: Mainstream Mekong, Bassac, and Tonle Sap Rivers in Cambodia. Source: ADB CDTA 2014 ................... 19 Figure 10: Near Real-time River Monitoring Stations supported by MRC .................................................................... 23 Figure 11: Data Model for the Hydrometeorological System ....................................................................................... 26 Figure 12: General Model for an Operational Flood Forecast System ......................................................................... 28 Figure 13: Non-Structural Flood Management Components ....................................................................................... 38 Figure 14: Sustainable Flood Management Concepts ................................................................................................. 39 Inception Report - May 2016 Page iii Greater Mekong Sub-Region Flood and Drought Risk Management and Mitigation Project Support to the National Flood Forecasting Centre Contract Number: GMS-FDRMMP-CS-003 List of Tables Table1: Number of MOWRAM Staff within the Central Office Departments .................................................................. 9 Table2: Number of MOWRAM Staff within the PDOWRAMS ...................................................................................... 10 Table3: Results Model for the NFFC project ................................................................................................................ 15 Table4: River Basins with Catchment Area [km2]......................................................................................................... 18 Inception Report - May 2016 Page iv Greater Mekong Sub-Region Flood and Drought Risk Management and Mitigation Project Support to the National Flood Forecasting Centre Contract Number: GMS-FDRMMP-CS-003 List of Acronyms and Abbreviations ADB Asian Development Bank AusAID Australian Agency for International Development AWS Automatic Weather Station BDP Basin Development Plan CBDRM Community Based Disaster Risk Management CBOs Community-Based Organization CNMC Cambodian National Mekong Committee DEM Digital Elevation Model DIS Database and Information System DHRW Department of Hydrology and