Petawawa River

The Petawawa River is a river in eastern Ontario, Canada.

It starts at Ralph Bice Lake (formally Butt Lake) in northern Algonquin Park and flows east, emptying into the Ottawa River at the Town of Petawawa. The river is Template:Km to mi in length and drains an area of Template:Km2 to mi2, with a mean discharge of 45 m³/s (source: Atlas of Canada).

The river's name comes from the Algonquian language, meaning "where one hears a noise like this", which refers to its many rapids. From the late 19th century until the 1960s, the river was used for log driving of the timber from the forested areas surrounding the river. The river is popular among canoeing and kayaking enthusiasts for its white water rapids and often spectacular views.

Part of the Petawawa River lies in the Ottawa-Bonnechere Graben which is a 175 million year old rift valley.

Tributaries of this river include:

• Barron River
• Crow River
• Little Madawaska River
• Nipissing River
• North River

The river as it runs through the town of Petawawa.