URBAN FLOOD MANAGEMENT AT KOTTARACHOWKI, MANGALORE, KARNATAKA, INDIA. USING GIS AND REMOTE SENSING: A CASE STUDY

Civil Engineering

Flood impact is one of the most considerable disasters in the world. Floods are caused due to natural factors such as heavy rainfall, high floods and high tides, etc., and human factors such as deforestation, improper land use, blocking of drainage channels etc. Floods result in damage properties and losses of life. Increase population results in more urbanization, more impervious area and less infiltration and greater flood peak and runoff. Flood loss prevention and mitigation includes structural flood control measures such as proper maintenance of the existing drainage system, construction of levees and non-structural measures such as flood hazard and risk management, flood forecasting and warning etc. The study uses the Remote Sensing and GIS technique to assess the flood inundated places by flood hazard map in the study area, effect of flood on people, infrastructure and vegetation by flood vulnerability map and flood zones which shows hazards and classifying them as low, medium and high hazards by flood zoning map in the study area. The results of the above particulars are used to give early warnings of the flood and suggestion to flood control and mitigation measures for the flood prone study area that is Kottarachowki, Mangalore taluk, Dakshina Kannada district, Karnataka state, India.

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