A Study and Simulation of Cloudburst event Over Uttarkashi Region using River Tool and Geomatic Techniques
V.V.Govind Kumar1, Kamal Jain2, Ajay Gairola3

1V.V.Govind Kumar, Department of Civil engineering, Indian Institute of Technology Roorkee, India.
2Dr. Kamal Jain Department of Civil engineering, Indian Institute of Technology Roorkee, India.
3Dr. Ajay Gairola, Department of Civil engineering, Indian Institute of Technology Roorkee, India.
Manuscript received on February 04, 2013. | Revised Manuscript received on February 26, 2013. | Manuscript published on March 05, 2013. | PP: 121-126 | Volume-3 Issue-1, March 2013. | Retrieval Number: A1314033113/2013©BEIESP
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© The Authors. Published By: Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: In Uttarakhand state, India subjected to frequent occurrence of natural disasters like Cloudburst. Flooding due to Cloudburst is the extreme form of Natural disaster. This leads flash floods/ landslides, house collapse, dislocation of traffic and human casualties on large scale (Sati and Maikhuri, 1992) The average rainfall for Uttarkashi district varies 1500-3000 mm a year. The purpose of this study is to Analyses the Natural Disaster events like CloudBurst using RiverTool and Geographic Information System. In the first stage, locations of Cloudburst were identified from field survey and Indian Atlas. In the second stage, the layers Slope, Drainage pattern and LandUse classification are generated from AsterDEM and Landsat ETM+ data. The influence of Drainage characteristics, slope angle and LandUse Classification were spatially integrated to analyse one of the Natural Disaster like Cloudburst in the Uttarkashi District, Uttarkhand State, Northern part of India where a large number of Cloudburst happened due to extreme weather event of Aug 3–6, 2012. The villages Ravada, Paniyara kala, Andhyara kala, Sangamchetty are totally effected and 34 persons died, 7 Bridges of vehicle and 6 Bridges of footpath were washed away resulting in no connectivity with Bhatwari area, 1700 families are affected from Gangori to Uttarkashi, Around a population of 80000 is affected from this disaster. A quantitative technique of multivariate analysis was performed to analyse theware conducted for different excess rainfalls. A natural disaster is the consequence of the combination of a natural hazard (a physical event e.g. volcanic eruption, earthquake, landslide, flooding, etc.) and human activities. Therefore, for better understanding of this event, Mapping and analysis of hydrological Parameters are carried out in Uttarkashi region. Uttarkashi and its surrounding regions of the trans-Himalaya experienced multiple cloudbursts and associated flash floods during August 3–6, 2012.
Keywords: Cloudburst, Geographic Information System, Flash floods, Landsat ETM+ and Aster DEM.