status of flood and early warning system in nepal
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Status of flood and Early Warning System in Nepal
Department of Hydrology and Meteorology, Kathmandu, Nepal
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Losses 1990-2015
Disasters in Nepal
Source: www.preventionweb.net
among the top weather-related hazards, Flash Floods have the highest mortality rate globally …
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Nationally Reported Losses 1990-2015
Source: www.preventionweb.net
Disasters in Nepal
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Establish, operate and manage flood forecasting stations and upgrade them with real time telemetry system.
Assess hazards, vulnerabilities and risks due to floods in major river basins.
Develop river flow forecasting models for major rivers of Nepal.
Principal Activities of Flood Forecasting Section, DHM
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• Establish flood early warning systems on major flood prone rivers of Nepal.
• Prepare manuals and guidelines for flood early warning systems.
• Coordinate with national, regional and international organizations involved in disaster risk management.
Principal Activities of Flood Forecasting Section, DHM
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Real time Station Network
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Status of Forecasting WRF Model 3 Day Forecasts
DAY 3
DAY 1 DAY 2
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Major works of Flood Forecasting Section, DHM
Station Office Stake Holders
DEOC
LDMC/CDMC
Communication/ Media
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Flood Station
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Rainfall Stations/ jiff{dfkg s]Gb|
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System Overview
Internet Satellite
Central Server
Automatic Gauging Station
Siren System
Mobile Tower
Sensor
Display Board
Regular Data Posting +Warning (SMS)
Communication
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Communication
CDMA
GSM
Iridium Warnings
Regular Data Posting +Warning (SMS)
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www.hydrology.gov.np
Phone/SMS
Siren
Data Transmission and Dissemination
Radio
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Telemetric Stations
http://www.hydrology.gov.np
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Web Based Telemetry :Rainfall Watch
Note: warning level for rainfall :60mm in 1 hr,80 mm in 3 hour, 100 mm in 6 hr, 120mm in 12 hr,140 mm in 24 hr
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Web Based Telemetry :River Watch
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0123456789
10
West Rapti Kusum Koshi Chatara Karnali Chisapani Narayani Narayanghat
Warning Level Danger Level
0
1
2
3
4
5Warning Level
Danger Level
Number of Days crossing the Threshold values
2013
2014
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Mahakali Flood 24 June 2015
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Bagmati Flood 2015 (17 th and 21th Aug)
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Early warning system: Case study of Banke District
Display board at DAO, Banke showing water level of Rapti River at Kusum (above danger level)
Source:
www.hydrology.gov.np
Photo: Community people shifting their belongings to safe place
CDO, Banke taking flood level information
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Security forces were mobilized at Holiya Armed police force in ready position for rescue
Community people shifting their property by boat CDO, Banke visited to Holiya to observe the situation
Stakeholder and Community in action
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Stakeholder and Community in action
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DHM-ICIMOD- HYCOS Project
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CB-EWS in Kankai River Basin
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CB-EWS in Kankai River Basin Hydrological Stations proposed for Telemetry
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Hydro-Met Stations for Maadi CBEWS
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CFGORRP- Component II (ongoing)
1 Ratu
2 Gagan
3 Khando
4 Kong
5 Hadiya
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Glacier lakes Monitoring
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Glacier lake monitoring….
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• Water level sensor. • Automatic Weather Station
• U/S GLOF Sensor
• D/S GLOF Sensor
GLOF Sensing - Upstream:
• The pressure level sensor
• moraine dam movement sensor
• water content reflectometers
GLOF Sensing - Downstream:
• radar level sensor
• water content reflectometers
• Camera
• decibel meter
Moraine Dam Movement Sensor
Water Content Reflectometer
CFGORRP CB-EWS in Imja Glacial Lake Component 1 (ongoing)
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THANK YOU