The Nipissing River is a river

River

A river is a natural watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water. Small rivers may also be called by several other names, including...

 in the Saint Lawrence River

Saint Lawrence River

The Saint Lawrence is a large river flowing approximately from southwest to northeast in the middle latitudes of North America, connecting the Great Lakes with the Atlantic Ocean. It is the primary drainage conveyor of the Great Lakes Basin...

 drainage basin

Drainage basin

A drainage basin is an extent or an area of land where surface water from rain and melting snow or ice converges to a single point, usually the exit of the basin, where the waters join another waterbody, such as a river, lake, reservoir, estuary, wetland, sea, or ocean...

 in the Unorganized South Part of Nipissing District in northeastern

Northeastern Ontario

Northeastern Ontario is the region within the Canadian province of Ontario which lies north and east of Lakes Superior and Huron.Northeastern Ontario consists of the districts of Algoma, Sudbury, Cochrane, Timiskaming, Nipissing and Manitoulin; and the single-tier municipality of Greater...

 Ontario

Ontario

Ontario is a province of Canada, located in east-central Canada. It is Canada's most populous province and second largest in total area. It is home to the nation's most populous city, Toronto, and the nation's capital, Ottawa....

, Canada

Canada

Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

. The river is entirely within Algonquin Provincial Park

Algonquin Provincial Park

Algonquin Provincial Park is a provincial park located between Georgian Bay and the Ottawa River in Central Ontario, Canada, mostly within the Unorganized South Part of Nipissing District. Established in 1893, it is the oldest provincial park in Canada. Additions since its creation have increased...

, and is a left tributary of the Petawawa River

Petawawa River

The Petawawa River is a river in the Saint Lawrence River drainage basin in Nipissing District and Renfrew County in eastern and northeastern Ontario, Canada. The river flows from Algonquin Provincial Park to the Ottawa River at the town of Petawawa...

.

Course

The river begins at Big Bob Lake in geographic Paxton Township and flows east, passes briefly through geographic Butt Township and geographic Devine Township, turns north into geographic Biggar Township, then back east, over Stewart's Dam and through the Allen Rapids, and into geographic Osler Township. It continues east over Graham's Dam, the High Falls and Gauthier's Dam, enters geographic Lister Township, flows over the Perley Dam and Rolling Dam, and empties into Cedar Lake on the Petawawa River, across the lake from the community of Brent

Brent, Ontario

Brent is a community on Cedar Lake on the Petawawa River in northern Algonquin Provincial Park, and is located in geographic Deacon Township in the Unorganized south part of Nipissing District in northeastern Ontario, Canada....

. The Petawawa flows via the Ottawa River

Ottawa River

The Ottawa River is a river in the Canadian provinces of Ontario and Quebec. For most of its length, it now defines the border between these two provinces.-Geography:...

to the Saint Lawrence River.

Tributaries

• Plumb Creek (right)
• Nadine Creek (left)
• Osler Creek (left)
• Coldspring Creek (right)
• Kelley Creek (left)
• Gibson Creek (left)
• Squawk Creek (right)
• Wolfland Creek (left)
• Beaverpaw Creek (right)
• Shag Creek (right)
• Loontail Creek (right)
• Chibiabos Creek (right)