Rivers (m3/s) Astor Gilgit Indus/Skardu Indus/Chilas Mean 138 613 1091 1786 Sig. 0.00** 0.51 0.01* 0.39 Catchment’s area (Km2) 4040 25900 112665 142709 Water yield per annum 1,074,488 746,271 305,434 394,714 ** indicates the most significance level (p<0.05).

Table 2: Water yield per annum in Catchment’s Basin.