Water qualilty monitoring and modelling in the Kelani Ganga

Abstract

Draft ambient water quality standards based on designated water uses have been developed for surface waters of Sri Lanka in the period 1991-1992. These standards are to be used to evaluate present environmental quality, to prepare environmental management plans, and to assess environmental impacts due to effluent discharge from future development activities. Evaluation of present environmental quality requires water quality monitoring. Prediction of the effect of current and future effluent discharge requires the use of water quality models - providing the relationship between waste loads and receiving water quality.