Canada

• Portage River (Newfoundland), a tributary of the Churchill River
  Churchill River (Atlantic)
  The Churchill River is a river in Newfoundland and Labrador which flows east from the Smallwood Reservoir in Labrador into the Atlantic Ocean via Lake Melville. The river is long and drains an area of ; it is the longest river in the province...
  
  
• Portage River (Prince Edward Island), an inlet of Cascumpec Bay
  Cascumpec Bay
  Cascumpec Bay is within Prince Edward Island in Canada and is adjacent to the Gulf of Saint Lawrence.-Description:Cascumpec Bay is located where Prince Edward Island's north shore at its northwestern extreme turns northeasterly to become the east shore of the island's Northeast Peninsula. The bay...
  
  
• Portage River (New Brunswick), a tributary of the Northwest Miramichi River
  Northwest Miramichi River
  The Northwest Miramichi River is a Canadian river in New Brunswick. The Mi'kmaq referred to the river as Elmunokun, possibly meaning "a beaver hole" in reference to a deep pool in the river, just below the mouth of the Big Sevogle River, its largest tributary.The Northwest Miramichi River has its...
  
  
• Portage River (Hardwicke Parish, New Brunswick), empties into southeastern Miramichi Bay
  Miramichi Bay
  Miramichi Bay is an estuary located on the west coast of the Gulf of St. Lawrence in New Brunswick, at the mouth of the Miramichi River. Miramichi Bay is separated into the "inner bay" and the "outer bay", with the division being a line of uninhabited barrier islands which are continually reshaped...
  
  
• Portage River (Alberta), a tributary of the Peace River
  Peace River (Canada)
  The Peace River is a river in Canada that originates in the Rocky Mountains of northern British Columbia and flows to the northeast through northern Alberta. The Peace River flows into the Slave River, a tributary of the Mackenzie River. The Mackenzie is the 12th longest river in the world,...
  
  

Michigan

• Portage River (Houghton County, Michigan), the southern end of the Keweenaw Waterway
• Portage River (Washtenaw County, Michigan), a tributary of the Huron River
  Huron River (Michigan)
  The Huron River is a river in southeastern Michigan, rising out of the Huron Swamp in Indian Springs Metropark in northern Oakland County and flowing into Lake Erie on the boundary between Wayne County and Monroe County...
  
  
• Portage River (Jackson County, Michigan)
  Portage River (Jackson County, Michigan)
  The Portage River is a river in the U.S. state of Michigan, flowing mostly southwesterly through northeast Jackson County.The Portage River rises at approximately in the Portage Lake Swamp in the Waterloo State Recreation Area. The river flows mostly southwest into the Grand River at in Blackman...
  
  , a tributary of the Grand River
• Portage River (St. Joseph County, Michigan), a tributary of the St. Joseph River

Minnesota

• Portage River (Carlton County, Minnesota) in Carlton County, Minnesota
  Carlton County, Minnesota
  As of the census of 2000, there were 31,671 people, 12,064 households, and 8,408 families residing in the county. The population density was 37 people per square mile . There were 13,721 housing units at an average density of 16 per square mile...
  
   empties into Moose Lake
• Portage River (Hubbard County, Minnesota) in Hubbard County, Minnesota
  Hubbard County, Minnesota
  As of the census of 2000, there were 18,376 people, 7,435 households, and 5,345 families residing in the county. The population density was 20 people per square mile . There were 12,229 housing units at an average density of 13 per square mile...
  
   drains Portage Lake into Fish Hook Lake
• Portage River (St. Louis County, Minnesota) in St. Louis County, Minnesota
  St. Louis County, Minnesota
  St. Louis County is a county located in the U.S. state of Minnesota. As of 2010, the population was 200,226. Its county seat is Duluth. It is the largest county by total area in Minnesota, and the second largest in the United States east of the Mississippi River; in land area alone, after Aroostook...
  
   empties into Nina Moore Lake

Historical uses

• The South Branch of the Chicago River
  Chicago River
  The Chicago River is a system of rivers and canals with a combined length of that runs through the city of the same name, including its center . Though not especially long, the river is notable for being the reason why Chicago became an important location, as the link between the Great Lakes and...
  
  was once called the Portage River