A rainfall – runoff model describes the relation between the rainfall and runoff for a particular catchment area. The relationship between rainfall in a period and the corresponding runoff is quite complex. SCS-CN method is used to estimate the runoff, but, SCS-CN method does not consider the impact of rainfall intensity and did not account for the influence of forest management practices. The aim of this study is to develop Fuzzy Logic Model to estimate runoff using rainfall given for the area under consideration. The area considered for this study is Kelo macro-watershed of Mahanadi basin, Raigarh, Chhattisgarh. The daily rainfall and gauge – discharge data for past 12 years (2002 to 2013) were used. Weighted rainfall for the study area was estimated by constructing the Thiessen polygons. |
