Disaster Management Plan
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DISASTER MANAGEMENT PLAN UPPER TRISHULI (UT-1) HYDROPOWER PROJECT (216 MW) RASUWA DISTRICT, NEPAL Prepared by: HECT Consultancy Dhumbarahi Height, Kathmandu, Nepal December 22, 2017 ABBREVIATIONS AND ACRONYMS ADB Asian Development Bank CBDRM Community Based Disaster Risk Management CBO Community Based Organization CBS Central Bureau of Statistics CDO Chief District Officer CDMA Code Division Multiple Access DAO District Administration Office DCP Data Collection Platform DDC District Development Committee DEM Digital Elevation Model DHM Department of Hydrology and Meteorology DM Disaster Management DDMC District Disaster Management Committee DoED Department of Electricity Development DMC Disaster Management Committee DRM Disaster Risk Management DRR Disaster Risk Reduction EIA Environmental Impact Assessment EOC Emergency Operation Center EWS Early Warning System FGD Focus Group Discussion GLOF Glacial Lake Outburst Floods G&D Gauge and Discharge GoN Government of Nepal GPS Global Positioning System GPRS General Packet Radio Service GRC Grievance Redressal Committee GSM Global System for Mobile HH Household HEP Hydro Electricity Project HFL High Flood Level HS Hydrological Station ICIMOD International Centre for Integrated Mountain Development IEC Information Education and Communication IEE Initial Environmental Examination IFC International Finance Corporation I/NGO International/National Non-Governmental Organization KII Key Informant Interview LALRP Land acquisition & Livelihood Restoration plan LBSP Local Benefit Sharing Plan LNP Langtang National Park MoAD Ministry of Agricultural Development MoHA Ministry of Home Affairs MoPE Ministry of Population and Environment MW Mega Watt NEA Nepal Electricity Authority NSDRM National Strategy for Disaster Risk Management NPR Nepali Rupees NRCS Nepal Red Cross Society NWEDC Nepal Water and Energy Development Company Pvt. Ltd. O&M Operation and Maintenance PAF Project Affected Family PAP Project Affected Persons PCVA Participatory Capacity Vulnerability Analysis PDA Project Development Agreement PRA Participatory Rural Appraisal QRT Quick Response Team RAP Resettlement Action Plan RF Rainfall Station R&R Resettlement and Rehabilitation SDI Serial Data Communication SMS Short Message Service SIA Social impact Assessment SOP Standard Operating Procedures UHF Ultra High Frequency UNISDR United Nations International Strategy for Disaster Reduction UT-1 Upper Trishuli-1 VDC Village Development Committee V2R Vulnerability to Resilience VHF Very High Frequency VRLA Valve Regulated Lead Acid WB World Bank ii TABLE OF CONTENTS Abbreviations and Acronyms ........................................................................................................ i Executive Summary ................................................................................................................... 1 Chapter 1: Introduction to the Disaster Management Plan .................................................. 2 1.1 Contextualizing Disaster Management Plan ......................................................................... 2 1.2 Brief description of the project .............................................................................................. 5 1.3 Project location .................................................................................................................... 6 1.4 Salient features of Upper Trishuli-1 HEP .............................................................................. 7 1.5 Objective of the Plan ............................................................................................................ 8 1.6 Rationale of the Plan ............................................................................................................ 8 1.7 Profile of Rasuwa District ....................................................................................................10 Chapter 2: Plan preparation methodology ............................................................................13 2.1 Study methodology .............................................................................................................13 2.1.1 Literature review ...............................................................................................................13 2.1.2 Field observation ..............................................................................................................13 2.1.3 Participatory Capacity and Vulnerability Assessment (PCVA) ..........................................14 2.1.4 Community/stakeholder consultations ..............................................................................15 2.1.5 Data collection .................................................................................................................15 2.2 Vulnerability analysis ...........................................................................................................16 Chapter 3: Dam break/inundation analysis ...........................................................................17 3.1 Climate and hydrology ........................................................................................................17 3.2 Identification of risk assessment, vulnerability and capacity analysis...................................17 3.3 Enhancing resiliency ...........................................................................................................18 3.4 Active landslide ...................................................................................................................19 3.5 Glacial Lake Outburst Flood (GLOF) ...................................................................................21 3.6 Earthquake..........................................................................................................................22 3.6.1 Impact of earthquake in project area ................................................................................23 3.7 Dam break/inundation analysis ...........................................................................................24 3.7.1 Dam break modelling process ..........................................................................................24 3.7.2 HEC-RAS model ..............................................................................................................26 3.7.3 Hydrological data analysis ................................................................................................29 3.7.4 Preparation of inundation map .........................................................................................30 3.7.5 Impacts on downstream of dam site in case of dam break ...............................................35 3.7.6 Results of analysis ...........................................................................................................35 3.7.7 Limitations ........................................................................................................................36 3.7.8 Conclusion .......................................................................................................................36 3.8 Evaluation of potential emergencies ....................................................................................37 3.9 Dam Safety and Maintenance Manual .................................................................................37 3.10 Emergency Action Plan .....................................................................................................37 3.10.1 Administration and procedural aspects ...........................................................................38 3.10.2 Preventive action ............................................................................................................38 3.11 Evacuation Plan ................................................................................................................39 3.11.1 Evacuation team ............................................................................................................39 3.12 Emergency action plan ......................................................................................................40 Chapter 4: Disaster monitoring and Early Warning System ................................................43 4.1 Community-based disaster risk management ......................................................................43 4.2 Installation of Early Warning System (EWS) ........................................................................45 4.3 System architecture for networking and seamless integration of EWS ................................48 4.3.1 Audio alerting system .......................................................................................................49 3 4.4 Specification of equipments in EWS ....................................................................................50 4.4.1 Radar level sensor ...........................................................................................................50 4.4.2 Water content sensor .......................................................................................................51 4.4.3 Wireless remote terminal unit ...........................................................................................51 4.4.4 Data collection platform ....................................................................................................51 4.5 Emergency audio notification system ..................................................................................53 4.6 Central data acquisition system