Prioritization of sub watersheds based on hydro morphometric analysis in the Sankarani watershed, upstream tributary of the Niger River

Any hydrological study of watersheds requires morphometric analysis. This analysis is a powerful tool in watershed management (Biswas et al., 1999, Yasmin 2013). Climate change coupled with land-use changes raises development issues, including the availability water resources for people's needs. Faced these ever-increasing needs population, land becomes requirement. Thus, objective to analyze characteristics Sankarani basin order prioritize its sub-basins. To this end, satellite images digital terrain model (DTM) SRTM (30mx30m) type 2012 were used. Under Grass GIS open source program, five sub-basins (BV1-I, BV2-M, BV3-Y, BV4-G and BV5-S) have been delimited. The measured parameters are number rivers their classifications, define geometry (area, perimeter, length), various indices (drainage density, slope ratio, texture elongation ratio form factor) determine hypsometric curves. hierarchy was performed by assigning ranks individual indicators compound parameter (Cp) value calculated. method established that BV2-M (upstream) has highest priority other conservation actions sustainable resources.