Important factors responsible for present status of poor urban drainage system in India
1.The natural drainage systems in most of the cities are in jeopardy, and the problem of flooding is worsening with time due to non-availability of properly engineered storm water drainage infrastructures. The problems are exacerbated due to encroachment and rampant dumping of garbage & solid waste in the drains on one hand and absence of preventive maintenance on the other.
2.The megalopolises (megacities) have a long history of municipal drainage perceptions since the British era. Most of the underground drainage facilities within core clusters of these megacities are usually century-old antiquated brick masonry conduits.
3.Illegal discharge of storm water in sewage line or vice versa
4.The coverage of storm water drainage network stands about 20% of road network and its allied catchments as per the report on Indian Urban Infrastructure and Services (March 2011), published by Ministry of Urban Development (MoUD) which is too inadequate to cater to the storm water disposal in the present city scenario.
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Urban Infrastructure and Network Study notes for M. plan Sem-III
Urban Infrastructures & Network.pdf
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