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...

The context for watershed analysis Lands to be analyzed Prioritization of watersheds for analysis Relation of the interagency approach to other watershed analysis methods The concept of interagency watershed analysis Goals of watershed analysis Watersheds as analysis units The issue focus Time required for a watershed analysis Consistency and standardization Interagency participation Federal wa...

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The increasing sediment yield in the watershed is caused by natural and human activities, which significantly shifts hydro-meteorological watershed. Modified Universal Soil Loss Equation (MUSLE) equation Water Assessment Tool (SWAT) was used to estimate yields for each hydrological response unit (HRU) based on peak runoff, daily runoff volume, area of unit, other estimated default model paramet...

Modeling of land use and cover (LULC) is a very important tool, particularly in the agricultural field: it allows us to know potential changes area future consider developments order prevent probable risks. The idea give representation situations based on certain assumptions. objective this study make predictions watershed “9 April 1947”, years 2028, 2038 2050. Then, maps obtained with climate ...

Soil water balance has response to climate change and evaluation of soil water change is one of the most important items of climate change impact assessment. GCM outputs under three scenarios were statistically downscaled during 2010~2039 to simulate the potential change of soil water balance in Wangdonggou watershed on the Loess Plateau with WEPP model. GCM predicted a 1.8 to 17.5% increase in...