Ottawa River

OttawaOttawa valleya major waterwayOttawa River ValleyriverRivière des Outaouaisthe river
The Ottawa River (Rivière des Outaouais, Algonquin: Kitchissippi) is a river in the Canadian provinces of Ontario and Quebec.wikipedia
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Ottawa

Ottawa, OntarioOttawa, CanadaOttawa, ON
From Lake Timiskaming, the river flows southeast to Ottawa and Gatineau, where it tumbles over Chaudière Falls and further takes in the Rideau and Gatineau rivers.
It stands on the south bank of the Ottawa River in the eastern portion of southern Ontario.

Gatineau

Gatineau, QuebecGatineau, QCCity of Gatineau
From Lake Timiskaming, the river flows southeast to Ottawa and Gatineau, where it tumbles over Chaudière Falls and further takes in the Rideau and Gatineau rivers.
It is located on the northern bank of the Ottawa River, immediately across from Ottawa, Ontario, together with which it forms Canada's National Capital Region.

Rideau River

Rideau
From Lake Timiskaming, the river flows southeast to Ottawa and Gatineau, where it tumbles over Chaudière Falls and further takes in the Rideau and Gatineau rivers.
The river flows north from Upper Rideau Lake and empties into the Ottawa River at the Rideau Falls in Ottawa, Ontario.

Quebec

QuébecProvince of QuebecQC
The Ottawa River (Rivière des Outaouais, Algonquin: Kitchissippi) is a river in the Canadian provinces of Ontario and Quebec.
Other notable rivers include the Ashuapmushuan, Chaudière, Gatineau, Manicouagan, Ottawa, Richelieu, Rupert, Saguenay, Saint-François, and Saint-Maurice.

Lake Timiskaming

Lake TemiskamingLake TemiscamingTimiskaming
The river rises at Lac des Outaouais, north of the Laurentian Mountains of central Quebec, and flows west to Lake Timiskaming.
The lake, which forms part of the Ottawa River, is 110 km in length and covers an area of almost 295 km2.

Lake of Two Mountains

Lac des Deux MontagnesLac des Deux-MontagnesLac-des-Deux-Montagnes
The Ottawa River drains into the Lake of Two Mountains and the St. Lawrence River at Montreal.
Lake of Two Mountains (French: Lac des Deux Montagnes) is part of the river delta widening of the Ottawa River in Quebec, Canada, at its confluence with the St. Lawrence River.

Gatineau River

GatineauCascadesGatineau valley
From Lake Timiskaming, the river flows southeast to Ottawa and Gatineau, where it tumbles over Chaudière Falls and further takes in the Rideau and Gatineau rivers.
The Gatineau River (Rivière Gatineau, ) is a river in western Quebec, Canada, which rises in lakes north of the Baskatong Reservoir and flows south to join the Ottawa River at the city of Gatineau, Quebec.

Laurentian Mountains

LaurentiansLaurentian HillsLaurentides
The river rises at Lac des Outaouais, north of the Laurentian Mountains of central Quebec, and flows west to Lake Timiskaming.
The Laurentian Mountains (French: Laurentides) are a mountain range in southern Quebec, Canada, north of the St. Lawrence River and Ottawa River, rising to a highest point of 1166 m at Mont Raoul Blanchard, northeast of Quebec City in the Reserve Faunique des Laurentides.

Westmeath Provincial Park

WestmeathWestmeath sand dune/wetland complex
The Westmeath sand dune/wetland complex is significant for its relatively pristine sand dunes, few of which remain along the Ottawa River, and the many associated rare plants.
Westmeath Provincial Park is a provincial park on the Ottawa River in Renfrew County, Ontario, Canada.

Mattawa River

MattawaMattawa River Provincial Park
Following the demise of the Champlain Sea the Ottawa River Valley continued to drain the waters of the emerging Upper Great Lakes basin through Lake Nipissing and the Mattawa River.
It flows east from Trout Lake east of North Bay and enters the Ottawa River at the town of Mattawa.

Mississippi River (Ontario)

Mississippi RiverMississippiMississippi River Valley
The Mississippi River is a tributary of the Ottawa River in Eastern Ontario, Canada.

Coulonge River

One of a dozen or so significant tributaries of the Ottawa River, it has a length of 240 km and a drainage area of 5060 km2, and runs in a general south-eastern direction from its headwaters in Lac au Barrage (situated in La Vérendrye Wildlife Reserve) to the Ottawa River at Fort-Coulonge.

Dumoine River

Dumoine
From Dumoine Lake, the river flows almost due south off the Canadian Shield and empties into the Ottawa River, just west of Rapides-des-Joachims, Quebec, or Rolphton, Ontario.

Lièvre River

Du Lièvre RiverLievre RiverLièvre
The Lièvre River (Rivière du Lièvre; ) is a river in western Quebec which flows south from the Mitchinamécus reservoir and empties into the Ottawa River at Masson-Angers.

Montreal

Montreal, QuebecMontréalMontreal, Canada
The Ottawa River drains into the Lake of Two Mountains and the St. Lawrence River at Montreal.
The city covers most of the Island of Montreal at the confluence of the Saint Lawrence and Ottawa Rivers.

Rivière du Nord (Laurentides)

Rivière du NordNordNorth River
Rivière du Nord is a -long river in the Laurentides region that flows into the Ottawa River.

Noire River (Ottawa River tributary)

Noire RiverNoire
It runs in a south-eastern direction into the Ottawa River at Waltham, Quebec.

Rouge River (Quebec)

Rouge RiverRouge
The Rouge River (red river) is a river in western Quebec, Canada, which empties into the Ottawa River near Pointe-au-Chêne and flows north of Mont Tremblant.

Bonnechere River

Bonnechere
The river flows from Algonquin Provincial Park to the Ottawa River east and north of the town of Renfrew.

South Nation River

South Nation
The former site of the town of Lemieux, Ontario collapsed into the South Nation River in 1993.
It springs from forests and marshes located north of Brockville and it flows 175 km northeast to empty into the Ottawa River north of Plantagenet.

Mattawa, Ontario

MattawaMattawa, ON
The main trading posts along the river were: Lachine, Fort Coulonge, Lac des Allumettes, Mattawa House, where west-bound canoes left the river and Fort Témiscamingue.
Mattawa is a town in northeastern Ontario, Canada on Algonquin Nation land at the confluence of the Mattawa and Ottawa Rivers in Nipissing District.

Madawaska River (Ontario)

Madawaska RiverMadawaska
It flows east, dropping 380 m before emptying into the Ottawa River at Arnprior.

Deep River, Ontario

Deep River
Located along the Ottawa River, it lies about 200 km north-west of Ottawa on the Trans-Canada Highway.

Notre-Dame-du-Nord

Notre-Dame-du-Nord, QuebecNotre Dame du NordNotre Dame du Nord, Quebec
It is located at the northern end of Lake Timiskaming where the Ottawa River enters into this lake.

Montreal River (Timiskaming District)

Montreal River
It travels 220 km from its source at Smoothwater Lake to its mouth at Lake Timiskaming on the Ottawa River.