tributary

Will India be able to stop the Indus river and two of its tributaries from flowing into Pakistan?

It is mostly fed by tributaries on the Mexican side, so Mexico can control how much water it contributes to the river.

It explained the canal, which once transported iron and coal to Newport docks, had relied on funnelling water from the River Usk and its tributaries which accounted for 80-90% of its water supply.

It is estimated that 11% of the rubbish which enters the River Clyde - which flows through the city - and its tributaries is eventually washed up at Arrochar.

Biologists from the California Department of Fish and Wildlife have spotted fall-run Chinook salmon in tributaries miles upstream from where Iron Gate Dam was removed.