%0 Journal Article %T A Diagnostic Application of HEC¨C HMS Model to Evaluate the Potential for Water Management in the Ratnapura Watershed of Kalu Ganga Sri Lanka %J Engineer: Journal of the Institution of Engineers, Sri Lanka %D 2019 %R 10.4038/engineer.v52i3.7361 %X Director of Irrigation (Colombo Region) C.Eng., MIE(SL), B.Sc. Eng. (Hons) (Moratuwa), M.Eng. (Moratuwa) Senior Professor, Department of Civil Engineering C.Eng., MIECE (UK), FIE(SL), B.Sc. Eng.Hons (Peradeniya), PG Dip(Moratuwa), M.Eng. (Tokyo), Ph.D(Tokyo %K Hydrologic modelling %K HEC-HMS model %K Model calibration & Model verification %U https://engineer.sljol.info/articles/10.4038/engineer.v52i3.7361/