Abstract:
In   the   wake   of   growth   and   development   of   towns   at   a   fast speed,  the  urbanisation  is  taking  place  at  a  very  rapid  rate.   The constant   increase   in   impervious   area   is  causing  high   amounts  of runoff   in   less   time   with   the   increase   in   runoff   rate,   the hydrological   problems   associated   with   it   are   also   increasing. This  is  an  urgent  need  to provide  efficient  civil  services,  water supply  and  drainage  facilities  to  the  people.   Urban  hydrological research  has  been  taking  place  in  several  developed  and  developing countries   from  long  time  back. Several   hydrological  models  have been  developed  to  provide  better  estimation  of  runoff  from  urban catchments. In  this  report  an  extensive  review  of  literature  on urban   hydrological   modelling   and   catchment   research   has   been carried  out. The   study   showed  that  almost  in  all  the  countries the  authentic  data  on  long  term  basis  is  not  available,   specially the  discharge  data  through  urban  drains. Technology  transfer  or information   exchange   programs,   data   on   pollutant   transport, snowmelt   data   base   and   validation   of   runoff   models   for   water quality   measurements   are   some   of   the   aspects   which   require   a deeper  inside  almost  throughout  the world.