Hazard map and flood, storm warning system in vietnam

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Hazard map and flood, storm warning system in vietnam CENTRAL COMMISSTTEE FOR FLOOD AND STORM CONTROL _______________________________ Hazard map and flood, storm warning system in vietnam Nguyen Huu Phuc DEPARTMENT OF DIKE MANAGEMENT AND FLOOD CONTROL

VIETNAM  Vietnam is located in South-East Asian Area: 331,690 km2 Population:78,45 million (1999) Population Density: 226 persons/km2 Percent Urban: 20,8% Percent Rural: 79,2% Vietnam has 14 major river systems including 02 large international river basin: Red River in the North MeKong River in the South HaNoi Capital

DISASTER ZONES IN VIETNAM North:Storm, Flood Central of Vietnam: Storm, Flashflood, flood South: Flood Hazard Map and Flood, Storm Warning System

FLOOD AND STORM WARNING SYSTEM INTRODUCTION Forecasting: by Hydro-Meteodology Service - Storm: Line tract, Intensity, Time - Flood: Hmax and Time in main Gauges Warning: by Central Committee for Flood and Storm Control Warning issure: + Forecast news + Respond activities Hazard Map and Flood, Storm Warning System

EFFECTIVENESS OF EARLY WARNING SYSTEM Increasing trend of warning effectiveness: - Government attention:issued policy for strom and flood control as Storm warning regulations, Ordinance on Storm and Flood control, Ordinance on Dikes and others. - Increase of Public Awareness - Modern technology - International relations and new technology transfer (Internet, Conference…) Hazard Map and Flood, Storm Warning System

EFFECTIVENESS OF EARLY WARNING SYSTEM Specific results Flood in the Sorth of Vietnam: Applied the flood inundation map to warn the duration of flood transmission and inundation for following actions: - Evacuation in depth and damage area. - Storage of food, medicine and necessary goods. - Building the safe places for children during flood season for most vulnerable areas. - Havest crop - Protecting the fruit-tree and densely populated area by embankment. Hazard Map and Flood, Storm Warning System

EFFECTIVENESS OF EARLY WARNING SYSTEM Hazard Map and Flood, Storm Warning System

EFFECTIVENESS OF EARLY WARNING SYSTEM Specific results Storm in the North of Vietnam: Warning issue for: - Observed Storm / Remote Storm. - Nearby Storm. - Emergency Storm. - Landing storm have contents as follows: - Storm track - Activities to respond the storm Hazard Map and Flood, Storm Warning System

EFFECTIVENESS OF EARLY WARNING SYSTEM Fishing boats in the sea that come back or find shelter or escape from storm-effected area; do not determinelly permit fishermen in the boat; arrange the plans to respond to the storm Ensure the safety of peoples in low land, estuary, coastal area and aquaculture area. Execute measures for safety of dike system, structures under construction Evacuate the hourseholds in high risk of landslide, flashflood Hazard Map and Flood, Storm Warning System

EFFECTIVENESS OF EARLY WARNING SYSTEM Hazard Map and Flood, Storm Warning System

HAZARD MAP DEVELOPMENT Hazard map have developed from topography map with 1. Scale: Red River Basin: 1:10.000 for downstream 1:25.000 for upstream Mekong River Delta: 1:25.000 and 1:10.000 for specilic area Central Vietnam: 1:50.000 for all provinces; 1:10.000 for downstream of some river. 2. Flood: biggest flood of historical flood. Hazard Map and Flood, Storm Warning System

MAP OF FLOOD INUNDATION AREA IN 1996 FLOOD-MASTER PLAN IN MEKONG DELTA MAP OF FLOOD INUNDATION AREA IN 1996

1999 HISTORICAL FLOOD EXTENT Thua Thien Hue Province - Central Vietnam

1999 HISTORICAL FLOOD EXTENT DaNang Province - Central Vietnam

CONCLUSION AND COMMENT Flood and storm impact have decreased because of Government attention and effective activities of orgnizations. Flooding maps have been developing for central region. Policy and law for early warning system Applied the new technical equipments for early warning system. Hazard Map and Flood, Storm Warning System