যৌথ নদী কমিশন, বাংলাদেশ

The Brahmaputra River basin, which covers a catchment area of about 5,52,000 square kilometres, is almost half the size of the Ganga/Ganges yet produces flow almost double of its neighbouring basin. 

(Source: Rivers Beyond Borders: India Bangladesh Transboudary River ATLAS by IUCN)