River Water Levels

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You can use the historical river data and when you last paddled/canoed/travelled the river to compare level/flow values with your experience. 

WCA takes no responsibility for the accuracy of the information given or levels shown on the links, and anyone using this information does so at their own risk.

Using river level information inherently includes a judgment factor. What one may consider an easy or safe level, someone else might not, and vice-versa. There is also a risk that due to recent heavy rain or an opening of a dam just before the trip, the level that the canoeists encounter when they arrive is nothing like that seen on the link before they left for the trip.

Historical Hydrometric Data Map Search at


Use the real-time data to monitor what the current level/flow is. From this you can estimate what the levels will be on a future date you want to do the river.

Real-Time Hydrometric Data Map Search at



Southern Ontario

Ontario Power Generation

The site offers some historical and current data on various rivers



Beaver Creek

Min: 10 cms, Ideal: 22 cms and above – lots of water, good surf waves, Max: Routinely peaks in the 40’s. Low bridges may become a hazard above this.



Black River – Queensboro

Min: 8 cms.  Ideal: 18 and above.  Max: above 40.



Black River Washago

Min: 7.75 m.  Ideal: 8.1 to 8.7 m.  Max: above 9 m take care going under bridges.



Burnt River near Burnt River

Min: 3.25 m.  Ideal: 3.25 to 4.0 m.  Max: 5 m spring peak.



Credit River at Streetsvile

Optimal at gauge level 4.7m to 5.0m. Above that gets washed out.  At 4.65m it becomes full on class 2 river with a bit of bumping off the bottom in places. and  dodging rocks, but lots of fun!.  Have run it at 4.55 m it was ok, but more bumping off the bottom.



Crowe Bridge

Minimum: 8 cms for the lower hole, 40 cms for the bridge waves

Between 40 and 100, the play is mellow

Ideal: 100 cms and above are optimal play levels

Over 100 is the level that the hole (second feature) gets big.

Max: 240 cms



Elora Gorge

Summer Low, 10-40 cms: increase of water takes the bump and grind out of the river.  Class 1-2

40-80 cms: Bumps the grade of most sets up a notch as the waves get bigger and the holes get stickier. Class 2-3.

80-120 cms: Big water run, with an overall grade hovering in the Class 3-4.

120+: Everything just keeps getting bigger and faster.



Gull River at Norland

Low: 3.4 m summer, Ideal 3.5 to 3.8 m, high: 4.1 m peaks



Head River at Sebright

Low: 8.9 m summer, Ideal 9.1 to 9.4 m, high: 9.7 m peaks



Lower Madawaska/Palmers Rapids

Min: runnable down to 15 cms

Ideal: running: 30-60 cms is good, and runs to 100 are good but character of river changes to big features and less technical.

Max: 225. At higher flows many rapids become less technical and fairly washed out.




Summer low: 15

Idea:l 40-60 cms  Class 3-4 river

Max:135 cms



Mississagua River

There is no online gauge for the Mississagua. There is a gauge on the bridge at the Hwy 36 takeout.  Class 2-3.  Normally a spring and possible fall run.  Summer is typically a bump and grind unless a big rain the day before.


Moira River at Foxboro

Low 7.5 m is bump & grind. Low to mid-8’s m are ideal. Over 8.5 flow through the woods on shoreline could make boat recover danagerous in sections. At 9 m parking lot at Chisholm’s Mill is flooded.



Moira River – Electric Chair – Belleville

Electric Chair comes in around 7.85 on the gauge, flushes out at about 8.15



Moon River

Depending on Georgian Bay water levels, the wave starts at about 1.6 m, really good above 2.6 m on the online gauge. Good flows are usually April/May with another season in late fall

The river is dam regulatated and you should contact the Bala dam site to find out what their water discharge rates are and if it is safe to paddle up and down stream to Georgian Bay.



Opeongo River

Class 1-4.  Narrow continuous river. No bail out or exit on the river.  Once you start you have to finish at takeout.

There is no online gauge for the Opeongo. Check inflow into Bark Lake, it is usually about 1/3 Opeongo, 2/3 Upper Madawaska. Click on Eastern Ontario > Madawaska River (PDF) link.  Read OPG Forecast for inflow.   Note table data is the outflow, DO NOT USE.

In flow into Bark Lake; 20 cms boney min.), 45-90 cms ideal, 120 sporty max for open boats.

Hydroelectric power | Water system data portal – OPG


Ottawa River, Beachburg section

Spring levels can be as high as 26, which flush almost all the features, but give the river a BIG water feel.

8 and above is generally considered a good level for the Middle Channel

From 8 down to 5 is an in-between level with a few decent spots.

From 4 down, the big features start to form, with the best main-channel play levels being between 2 – -1



Ottawa River, Champlain and other town playspots

The waves are best between 58.4 and 58.7 on the Britannia Gauge. As levels fall the waves further downstream become shallower and there is the potential of hitting rocks.



Oxtongue River

Minimum: 10 cms

Ideal: 15-20

30 cms: very beefy. Hogs trough is a full-on class 5+, Elbow develops river-wide holes.



Petawawa, town run

The town run of the Pet offers some great class 3-4 big-water paddling in the spring, with 2 big class 4s and a mix of class 3s.



Rouge River, Toronto

Class 1-2.  Start at Milne Conservation, end at Lake Ontario.  Level 3.38 m doable, but more would be better.



Salmon River

Class 1 to 2.5. Two class 4’s can be portaged. One of the mellower Hwy 7 spring time runs



Skootamata River

Class 2/3 with one 4. The Skoot is typical of other Hwy 7 spring runs, with narrow drops through small gorges mixed with easier rapids and flatwater.



Trent-Severn Waterway

Website information at


Water levels Interactive Map at



Upper Madawaska River

Class 3/4/5 The most difficult section of the Madawaska, the Upper Mad can be paddled in several sections, with the lower section accessible by an old rail bed. The section from Whitney to Hermans chute is a class 3/4 run with longer rapids than many southern Ontario runs. Below Hermans are several large, difficult drops, including the seldom-run Little Niagara.Flow : approx  37 cms coming into Bark Lake (estimate based on outflow and lake level)

There is no online gauge for the Upper Madawaska. If you can find out the inflow into Bark Lake, it is usually about 1/3 Opeongo, 2/3 Upper Madawaska. Click on Eastern Ontario Madawaska River



Upper Petawawa River

The Upper Pet is fairly steep section with 26 rapids varying from class 3-5. It varies in nature from a technical run at flows from 25 cms down, to a bigwater run at higher levels.

Low: 13 cms (2.3 m online gauge)

Ideal: 25 cms and up (2.45 m online gauge)

High: Unknown. It does get significantly harder at flows above 40 cms, with more of a bigwater feel.

The online gauge is located in the town of Petawawa and is not related to the visual gauge on the highway bridge. Rain in Algonquin park will not affect the Pet town gauge for a couple of days, so there seems to be 2 day lag time between the online gauge and the actual level on the upper Pet. Especially at high, spring flows, the above gauge reading is probably best considered a rough estimate. The 2 day lag time could mean a difference, up or down, or 50 cms




New York State


Black River/Hole Bros/Route 3 wave: Watertown, NY

Min suggested level: 1000 cfs Max suggested level: 6000 cfs (Water town to Dexter)

Min suggested level: 2000 cfs Max suggested level: 5000 cfs (Route 3 Wave)



Moose River: Old Forge NY

The Moose has 3 distinct sections: Middle, Lower, and Bottom. Great descriptions and rapid-rapid analyisis can be found at the link above.