Analysis and Mapping of Flood Line in Godavari River Basin within the Nasik Municipal Corporation Area
Journal Title: International Journal of Research in Social Sciences - Year 2012, Vol 2, Issue 2
Abstract
All through history it is evident that man has constructed his settlement along the streams, rivers or coasts. Stream or river water has been a source for consumption, agriculture or industry. Small settlements are converted into big cities as population is fast increasing and at the same time constructions are also increasing which has reduced the percentage of available land. This has increased the tendency of encroachment in river flood plain areas. Countries having high population density are more sensitive to floods because of lack of flood control, lack of emergency response infrastructure and early warning systems. Flooding is a natural and recurring event for a river or stream. Statistically, streams will equal or exceed the mean annual flood levels once every 2.33 years (Leopold et al., 1964). Flooding is a result of heavy or continuous rainfall exceeding the absorptive capacity of soil and the flow capacity of rivers, streams, and coastal areas. This causes a watercourse to overflow its banks onto adjacent lands. Floodplains are, in general, those lands most subject to recurring floods, situated adjacent to rivers and streams. Floodplains are therefore "flood-prone" and are hazardous to development activities if the vulnerability of those activities exceeds an acceptable level. In short, floods is an overflow or accumulation of an expanse of water that submerges land when discharge of a river cannot be accommodated within the margins of its normal channel so that water spreads over adjoining area and creates havoc. Flood can take place in a multitude of ways. Most floods take days or hours to develop but some generate quickly without any warning. These flash floods are quite dangerous and within a short period of time may sweep away everything that comes its way.
Authors and Affiliations
Dr. Deepak N. Thakre
Keywords
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