Course:Disaster Management Course: Disaster Management Presented by Venkatesh Emani
About me - M. Sc geography from University of Madras Three years of experience in teaching Geography and Economy for civil services Interests : Love teaching, watching cricket and some long drives Follow me on Unacademy: h nh
Floods " The term flood is generally used when the water-flows in rivers or any water body cannot be contained within natural or artificial banks It simply means inundation of large area with water for several days Flooding is both natural and man induced phenomenon (human accentuated) Assam and Bihar are the States worst affected by floods followed by U.P. and West Bengal During monsoon months, all states are prone to floods.
Causes of floods High intensity rainfall in catchment areas of a river Large scale deforestation/ increase in soil erosion in catchment areas of a river Meandering course of a river Increased siltation of river bed or water bodies Encroachment of flood plains or water body channel Flash floods in semi arid areas as those areas have poor natural drainage systems
Urban floods The incidence of foods in recent times in urban areasis increasing The incidence of floods in recent times in urban areas is increasing Eg: Chennaifloods 2o15 Unauthorized construction activities in flood plains and river beds, reduced the capacity of natural drains Unplanned urbanisation and encroachment of water bodies reduced the links among the water bodies of urban centres Poor urban planning and implementation, Lack of investment in storm water drainage and sewerage Inadequate planning and response mechanisms . .
Solutions Master plan for flood control and management for each flood prone basin. Adequate flood-cushion should be provided in water storage projects, wherever feasible . In highly flood prone areas, flood control should be given overriding consideration with respect to other priorities Strict regulation of settlements and economic activity in the flood plain zones along with flood proofing The flood forecasting activities should be modernised, value added and extended to other uncovered areas.