This river (line) vector digital data of Gorkha District was prepared by ICIMOD based on Indian toposheet (1:50,000),1950s.

River Systems Vector digital data prepared based on map of Gorkha District (1:125,000), published by Suspension Bridge Division (SBD) 1989.

Digital polygon dataset of Watershed of Central Karakoram National Park(CKNP) area, Pakistan. This dataset is derived from 30 meter spatial resolution ASTER DEM.

Digital polygon dataset of Water Body (Lakes) of Afghanistan. This dataset is basic Vector layer acquired from ESRI Data and Maps 2001.

Topographic Basic Vector Digital Data of the HKHR acquired from ESRI Map & Data 2001.

Digital polygon dataset of Drainage System of Afghanistan. This dataset is acquired from ESRI Data and Maps 2001.

Digital line dataset of River system of China. This dataset is basic vector layer acquired from USGS.

Digital point dataset of Water Resource Features (springs, well and Dams) of Afghanistan. This dataset is basic vector layer acquired from USGS.

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.

Digital polygon dataset of Sub Watershed boundaries of Bhutan. This dataset is extracted using the SRTM DEM. The boundaries were refined using LandSat images of 30m resolution. The watershed boundaries were further divided into sub-watershed boundaries in the glaciated region.