Wanniarachchi, S.S.2019-10-012019-10-012013Engineer, 46(2):p.59-68https://dl-iesl.nsf.gov.lk/handle/1/1796Water resources developmentMathematical modellingWatershed runoff coefficientEstimationMathematical modelling of watershed runoff coefficient for reliable estimations to meet the future challenges of water resources development in Sri LankaArticle