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GIS FLOOD DECISION SUPPORT TOOL AFTER DAM BREAK (ARMENIAN TEST CASE)
Abstract
In the framework of the international project Alliance for Disaster Risk Reduction, with acronym: ALTER, funded under DG ECHO external line funding schema, international team from Cyprus, Greece, Armenia and Bulgaria are having as main goal to create hazard maps for vulnerable areas in Armenia where potential dam breaks and flood events afterwards are possible. The presented work will show an approach for dam break analysis with potential flood zones in the downstream of the dam. The calculated affected zones and all related civil protection measures are designed within an open source web GIS tool developed for the project needs, which architecture and implementation steps will be demonstrated as work in progress. All results and calibration measures are done on the territory of the study area Geghi reservoir located in Syunik, the southernmost province of Armenia. The reservoir is situated on the Geghi river, the left-bank tributary of the river Voghji. The maximum water level discharge occurs during the spring. Due to the high altitude nature of the area, snowmelt increases gradually as does the level of the river and the reservoir. Thus results in high danger for the dam stability.
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References4
Georisk CJSC (2017) Assessment of the Multi-Component Risk Determined by the Maximum Seismic Impact on the Kapan City (Multi-Hazard City Scenario). Project # ARM 10-0000005849, Final Report.
Gevorgyan A., Minasyan R., Khondkaryan V., Antonyan A. (2014) The Prediction of Possible Flooding of the Territory as a Result of the Accident of the Geghi Reservoir Dam.
Wahl, Tony L., "Dam Breach Modeling – an Overview of Analysis Methods". Joint Federal Interagency Conference on Sedimentation and Hydrologic Modeling. June 27 - July 1, 2010, Las Vegas, NV.
Schlaffer S., Harutyunyan A. (2018) Working Paper: LCLU Voghji River Basin AUA Acopian Center for the Environment, AUA GIS and Remote Sensing Lab.
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