Major reasons causing the flood. The majority of local weather-dependent and variable nature, but in some cases differ from the region of human action, it is important to make dementia ... flooding is more severe. Any of the following: 1. the flood because the torrent 2. characteristics and components of a watershed 2.1 the shape of the basin area. 2.2 terrain of watershed 2.3 the type of soil. The condition of the plant up and degraded areas, cover of the watershed. 3. sea water to sustain 4. any changes regarding the environment. 4.1 expansion of the community and destroy the existing drainage system, naturally. 4.2 Earth rift
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