Flood Management in Sri Lanka

The growth areas of Sri Lanka, Particularly Colombo district are further often treating by pure disaster of floods even inside the mild rain. Not too way back, low cost consideration has been given by the federal authorities to mitigate disaster of flood. The development duties of storm water drainage methods are implementing in response to severity of disaster & frequency of floods prevalence. The fortune of civil engineers & peoples in Sri Lanka is least affect of pure disaster evaluating completely different worldwide places in South Asia & even world-wide. The first causes might presumably be acknowledged as unplanned urbanization, absence of soil conservative practices & unhealthy habits of some peoples cv formats in sri lanka.

The inhabitants progress of the Colombo district is shortly elevated in day-to-day. The retention areas are tremendously reducing attributable to development along with the illegal as correctly. The increment of depth of the paved areas are effecting to further flooring run off attributable to a lot much less infiltration that may evenly lowered attributable to bigger flooring water desk. The lower latitude of Colombo district moreover straight influenced to circulation worth of the storm water paths. The lesser gradient circuitously influences clogging of water path even piece of garbage. Constructing of storm water drainage system is significantly robust now in these areas & enchancment duties would possibly get further time & worth reasonably initially designed and budgeted amount.

When design of the storm water drainage methods are based totally totally on the earlier rainfall particulars, catchment traits and plenty of completely different problems with engineering hydrology & environmental engineering.the open channel development is broadly utilized in Sri Lanka along with underground conduit, pipes sections which might be wished overlaying avenue crossing, setting up when numerous plans are unattainable. The open channels are earth, gabions, random rubble masonry & bolstered concrete, the concrete, gabions channels might presumably be each rectangular or concrete which might be employed when the areas are restricted. Drainage system would possibly embody tertiary, secondary, & important canals types in response to their functionality. The frequency of various constructions like culverts, bridges, conduits, underground pipes, repairs avenue are fluctuate in response to depth of roads & buildings and plenty of others..