This paper focuses the quantitative evaluation of non point sources of pollution by graphical maps of watershed and estimating area based load of pollutants of various land uses with the use of Arc/View Geographic Information System. The representative study is carried out in the Xinshan sub-watershed of Taihu watershed. It involves the simulation of pollutants load by watershed; watershed area...

In 1998 and as part of a science cooperation and technology transfer effort, the Hydrologic Research Center (HRC) and collaborators designed and implemented at the Panama Canal Authority (PCA) a prototype forecasting system for the real time rainfall forecasting over a number of small sub-catchments of the 3,200-sqkm mountainous Panama Canal Watershed in Panama (Figure 1). The system (called PA...

construction of forest roads disorders the natural trend of water movement. it is vital to make ditch and cross line drainage culvert to prevent the area from being destroyed and conduct the water of streems and vallies. determination of culvert diameters depends on the information of area discharge, physiographic characteristic, vegetation cover and site land use. in order to determine the amo...

Abstract Over the last ten years, Bedog Sub-watershed area has continued to develop into an urban area. Along with these developments, land-use change processes occurred in area, especially reduction agricultural land, which was depressed by population growth. For this reason, purpose of study is identify pressure on carrying capacity and sustainable management strategies based land Sub-watersh...

Population and economic growth, the consequent increase in food demands have put great pressures on environmental resources they are driving rapid LULC changes. This study is aimed to examine impacts of land use/land cover changes hydrology Upper Gilgel Abay watershed. Landsat images (Landsat 5 TM 1986, ETM+ 2003, 8 OLI-TIRS 2021) were categorized into classes following supervised image classif...