Today, incorrect use of lands and land use changes, excessive grazing, no suitable using of agricultural farms, plowing on steep slopes, road construct, building construct, mine excavation etc have been caused increasing of soil erosion and sediment yield. For erosion and sediment estimation one can use statistical and empirical methods. This needs to identify land unit map and the map of effec...

Recent research recognized that the slope of 18% can be used to distinguish between ‘gentle slope’ case and ‘steep for detected differences in hydraulic variables (flow depth, velocity, Reynolds number, Froude number) those representatives sediment transport capacity, actual load). In this paper, using previous measurements carried out mobile bed rills flume experiments characterized by steep s...

The problems of land degradation and soil loss are among the major problems of watersheds in Iran. For erosion andsediment estimation one can use statistical and empirical methods. For doing this, land unit map and the map of effectivefactors should be prepared. For erosion and sediment estimation one can use statistical and empirical methods. However,these empirical methods are usually time co...

Purpose : Over the seventy years, various soil erosion modeling methods were developed in world with different input requirements and complexity. Some of these models have been applied Sri Lanka covering several regions country at scenarios over past twenty years. Thus, prime objective this study is to compare commonly practiced GIS/ RS based assessment derivation techniques model parameters us...

The Water Erosion Prediction Project (WEPP) model has been widely used to assess the impacts of management practices and climate change on runoff soil loss at both hillslope watershed scales. However, representation channel erosion processes in WEPP not changed significantly since it was released. current (WEPP v2012.8) previous versions assume that input erodibility parameters are constant thr...

estimation of the amount of soil loss measurement of field indicators is a low-cost method, is easy to learn and can be simply applied. in order to measure and make assessment of soil loss amount by field indicators method in shahrak watershed, first map of the work units was prepared and then, measurements of the relevant field indicators were carried out within these units. then, epm model wa...