3. Methodology and parameter estimation
Problems associated with soil erosion, movement and deposition of sediment in rivers, lakes and estuaries persist through the geologic ages in almost all parts of the earth. Nevertheless, the situation is aggravated in recent times with man's increasing interventions with the environment. Thus, a feasible course of action is to develop and use empirical models. The lack of availability of data such as sediment deposition data, rainfall intensity at shorter intervals (less than 30 min) in the study area, has limited the options for selection of data intensive models such as USPED, WEPP, soil erosion module in SWAT (soil and water assessment tool) model. Therefore, RUSLE model was selected and applied in study area as it requires land use land cover map that can be generated by remote sensing images, management practices, soil types and properties.