The purpose of this investigation is to summarise the current standard of practices for estimating reservoir sediment inflows for the entire duration of their useful service life, normally 100-year ARI design period. To achieve this objective, a review of the past and contemporary literatures and conventions on sedimentation issues in Malaysia as well as other regional countries is imperative. A case study was carried out using the Teriang reservoir. Both the low and high (Type I and II, respectively) curves are adopted for predicting the suspended load concentration (mg/l) using normalised flow discharge per unit area (Q/km
). Alternative method by coupling the sediment rating and flow duration curve (both daily and monthly) are also used for checking purpose. The low (Type II) and high (Type I) curves yield 167 and 608 tonne/km
/year suspended sediment, respectively.
Keywords: reservoir sediment inflow, Teriang River, sediment rating and flow duration curve, Malaysia