A broad question - Rivers establish commerce routes for goods and supplies among cities and nations. Rivers provide irrigation to ajacent farms and support agriculture. Rivers offer a direct source of food, be it fish, clams or other wildlife. Rivers, sadly, can be used as drainage and waste evacuation routes... look up the dead zone... Rivers offer recreation for boating, swimming and snorkel/SCUBA diving. Rivers supply a ready source of water, if it needs to be treated or not, within the supply-line - for communities within several hundred miles. (The Colorado River supplys drinking water to Colorado, Arizona and California...)
Municipalities are the primary users.
industrial uses at the estuary and tourism used at the High Force waterfall.
Hydroelectricity, irrigation and agriculture are the main ones.
Hydroelectric Power, Tourism, as a source of food and some transport
The main bodies of water in the US is the Columbia River, Colorado River, Ohio River, Missouri River, Mississippi River, Rio Grande River, St. Lawrence River, The Five Great Lakes (AKA HOMES), The Hudson Bay, the Atlantic Ocean, and the Pacific Ocean. The HOMES stand for... Huron Ontario Michigan Erie Superior
It's main river is the Columbia River.
the murray is the mai n river and the darling is the main river system in austrilia
The main river of Spain is the Ebro River.
The Amur is used for transport, fishing, living on and irrigation, it feeds and gives a living to millions of people.
The main river is river nile that is the river of egyp
The main river that runs through Melbourne is the Yarra River.
The Murray River is the main river in South Australia.