Metadata Catalogue
Basin
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Digital polygon dataset of Major River Basins of Afghanistan. This dataset is created using 1:1,000,000 scale map of Afghanistan and derived from AIMS, Afghanistan.
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This layer shows 41 watersheds across the country.
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Accelerated soil erosion is a common and environmentally destructive consequence of development in the populated trans-boundary Koshi river basin. The objective of this study was to assess assessment of soil erosion pattern and dynamic change trend of spatial distribution in erosion status between 1990 and 2010 and obtained the conservation priority map in the Koshi basin area using GIS and remote sensing. To develop soil erosion pattern revised universal soil loss equation (RUSLE) were adopted in ArcGIS environment where is the rainfall erosivity, soil erodibility, slope length factor, crop management factor and support practice factors were used a primary parameters. This study result the annual total erosion 4,35,996 ton/ha/yr in 2010.
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Digital polygon dataset of Watersheds of Afghanistan. This dataset is basic vector layer acquired from ESRI Data and Maps 2001.
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Digital polygon dataset of rainfall erosivity factor (R) of Koshi basin. The dataset is created using rainstorms of Nepal, India and China from world climate precipitation data. R-factor is computed as the average annual sum of the erosivity of the individual rainstorms, which is calculated as the product of total storm energy and maximum 30-min intensity. R-factor was evaluated from world climate precipitation data with equation (Renard and Freimund, 1994): R = 0.0483*P1.610 where P= annual precipitation (mm).
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Digital polygon dataset of Watershed boundaries of Bhutan. This dataset is extracted using the SRTM DEM. The boundaries were refined using LandSat images of 30m resolution. The watershed boundary was further divided into sub-watershed boundaries particularly in the glaciated region.
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Digital polygon dataset of River Basins of Pakistan. This dataset is Basic Vector layer derived from ESRI Map & Data 2001.
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Digital polygon dataset of soil erosivity on Koshi Basin. The dataset is created using Soil maps of Nepal, India and FAO and represents the average long term soil response to the erosive power associated with rainfall and runoff. It shows a measure of the susceptibility of soil particles to detachment and transport by rainfall and runoff.
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The dataset provides third level river basin boundaries of ten major river basins in the Hindu Kush Himalaya (HKH) region – the Amu Darya, Brahmaputra (Yarlungtsanpo), Ganges, Indus, Irrawaddy, Mekong (Lancang), Salween (Nu), Tarim (Dayan), Yangtse (Jinsha), and the Yellow River (Huanghe). In addition, it also includes boundaries of two interior river basins. The dataset has been developed from NASA’s 90m resolution Shuttle Radar Topography Mission (SRTM) digital elevation model.
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Digital dataset of Wetland ecosystem of Koshi Tappu Reserve within Koshi Basin. This dataset consist various vegetation cover/ land cover and water bodies for Koshi Tappu.