tributary
A Tributary!
A stream or river that feeds into another river is called a tributary. Tributaries play a crucial role in the overall health and flow of a river system, as they contribute water, nutrients, and sediment to the main river.
Snake River
The river that feeds into Hoover Dam is the Colorado river.
The Little Tallahatchie River feeds Sardis Lake in MS.
Nile River
River Drava
Spree and Saale
bob river
The Colorado River feeds Lake Mead.
It's a smaller river that feeds into that river.
The Jordon River.