Gunawardhana, W.D.T.W.Jayawardhana, J.M.C.K.Udayakumara, E.P.N.Malavipathirana, S.2018-06-132018-06-132018-03Journal of the National Science Foundation of Sri Lanka, 46(1):p.51-67https://dl.nsf.gov.lk/handle/1/23649Agricultural impactsMacroinvertebrate indicesRiver catchmentsRiver healthUrban impactsSpatio-temporal variation of water quality and bio indicators of the Badulu Oya in Sri Lanka due to catchment disturbancesArticle