Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  Ebe Ọ Na-agafe: Ihu ígwé na-adịgasị nnọọ iche, site n'ebe okpomọkụ na iru mmiri nke ebe okpomọkụ na-adịghị n'ebe ndịda ruo n'ebe ugwu nke ugwu ugwu, bụ́ ebe oyi na-atụ na ebe mmiri na-adịghị. Site na Mee ruo Ọktọba, mmiri ozuzo nke ndịda ọdịda anyanwụ na-eweta nnukwu mmiri ozuzo - ihe karịrị millimeters 4,000 (160 in) na mpaghara ndịda - na enwere oge ọkọchị a na-ahụkarị n'oge oyi. N'ebe ugwu, mmiri ozuzo na-adịkarị ụkọ, nke dị n'usoro nke 600 ruo 700 millimeters (24 ruo 28 inches), nke edere n'oge June-August. A na-ekwu na ọdịiche dị n'etiti oke osimiri na nke kacha nta n'oge mmiri ozuzo na ọnwa akọrọ dị ka ihe dị ka ugboro 20. Osimiri Manas, nke kachasị ukwuu n'akụkụ ugwu nke Brahmaputra, nwere oke mkpofu nke 7,641 cubic mita ma na-enye 5.48% nke mkpokọta Brahmaputra. Ogologo ya niile ruo mgbe ọ dabara na Brahmaputra bụ kilomita 375 (233 mi) (270 kilomita (170 mi) n'ugwu na nguzozi na ndagwurugwu) ma bulie elu na mita 4,500 (14,800 ft). O nwere mpaghara mkpokọta nke 41,350 square kilomita (15,970 sq mi) nke 85.9% dị n'ugwu na ndagwurugwu.  Ajụjụ: Olee otú ebe e si enweta mmiri dịruru n'ogologo?
41,350 square kilomita (15,970 sq mi)