Indeed OPs comment doesn't make much sense. Ganges is sourced in Gangotri, Yamuna in Yamunotri which are in Indian territory, behing massive himalayan wall sepa

Indeed OPs comment doesn't make much sense. Ganges is sourced in Gangotri, Yamuna in Yamunotri which are in Indian territory, behing massive himalayan wall separating it from (occupied and formerly indian) chinese territory. Mighty fine hiking locations too!