Development of Sediment Rating Curve Equations for Rising and Falling Limbs of Hydrograph Using Regression Concept

Insufficient information regarding the distribution of sediment yield during a storm is one of the old problems in soil and water conservation projects. Dotill now, the relationship between sediment and water discharge has only been investigated using the power equations and the position of samples have not been taken into account. In this paper, the concept of regression model was implemented to find out two separate equations defining the relationships between sediment yield and water discharge in two important segments of hydrograph namely, rising and falling limbs. The results revealed that the application of regression model is a suitable technique for the watershed is of Amameh and zamn Derakht in the study area.