Otonabee River

Otonabee River (Odoonabii-ziibi')
River
The Otonabee River in Peterborough, Ontario
Name origin: From the Ojibwe Odoonabii-ziibi, meaning Tullibee River
Country	Canada
Province	Ontario
Region	Central Ontario
County	Peterborough
Part of	Great Lakes Basin
Cities	Lakefield, Peterborough
Source	Katchewanooka Lake
- location	Selwyn
- elevation	233 m (764 ft)
- coordinates	44°25′54″N 78°16′19″W / 44.43167°N 78.27194°W / 44.43167; -78.27194
Mouth	Rice Lake
- location	Otonabee–South Monaghan
- elevation	187 m (614 ft)
- coordinates	44°09′14″N 78°13′52″W / 44.15389°N 78.23111°W / 44.15389; -78.23111Coordinates: 44°09′14″N 78°13′52″W / 44.15389°N 78.23111°W / 44.15389; -78.23111
Length	55 km (34 mi)
Basin	806 km2 (311 sq mi)
Location of the mouth of the Otonabee River in southern Ontario

The Otonabee River is a river in Peterborough County in Central Ontario, Canada. The river flows from Katchewanooka Lake, at the north end of the community of Lakefield, through the city of Peterborough to Rice Lake. It is in the Great Lakes Basin and forms part of the Trent-Severn Waterway.

The river is called Odoonabii-ziibi (Tullibee River) in the Ojibwe language. Otonabee comes from the words ode which means "heart" and odemgat that comes from "boiling water". It translates into "the river that beats like a heart in reference to the bubbling and boiling water of the rapids along the river".

The river begins at Katchewanooka Lake on the north side of the community of Lakefield in the municipality of Selwyn, and flows south over the Lakefield (Trent-Severn lock 6) dams and locks. After leaving the community to the Peterborough city limits, the river forms the border between Selwyn and the municipality of Douro–Dummer. The river continues south, passing through the dams associated with four more locks, enters the city of Peterborough, and passes under Faryon Bridge at Trent University. Just south of the university, the Trent-Severn departs via a south-bound canal to the Peterborough Lift Lock east of the river, while the river continues south to the west. It passes over several hydroelectricity dams and generating stations, and passes into the centre of the city of Peterborough, as close as 150 metres (490 ft) to downtown, as it reaches Little Lake. The Trent-Severn waterway rejoins the river there, exiting from Ashburnham Lock. The river leaves Little Lake at Scotts Mills lock & dam, and heads south, passes under Ontario Highway 7, passes into the municipality of Otonabee–South Monaghan, and snakes its way without any other locks or dams to reach its mouth at Rice Lake, which flows via the Trent River to Lake Ontario.