Here are some examples from different language families:
Algonquian (languages spoken across much of North America)
* Cree: *asini*
* Ojibwe: *mishi-ziibi*
* Delaware: *lenapewi*
Siouan (languages spoken in the Great Plains and Midwest)
* Lakota: *čhaŋká*
* Dakota: *čhaŋká*
* Osage: *wa-ha*
Iroquoian (languages spoken in the Northeast and Southeast)
* Mohawk: *onönhkwa*
* Cherokee: *atl*
Na-Dené (languages spoken in the Northwest and Alaska)
* Athabaskan: *na-chʼį́į́h* (various languages within this family)
* Tlingit: *k'aa.w*
Other language families:
* Chumash (California): *nuw*
* Yuman (California and Arizona): *ha-a*
* Quechua (South America): *mayu*
This is just a small sample, and there are many more words for river in different Native American languages.
Remember: When discussing Native American language and culture, it is important to be respectful of the diverse origins and meanings of words.