Water Levels

River System Data

Ontario Power Generation operates 66 hydroelectric stations and 239 dams on 24 river systems.

About this data

The maps on this site include markers representing the location of gauges where information on flows and water levels are available. These are used in the management of principal reservoirs within Ontario's river basins. Click on ‘Graphs and Advanced Data’ for facility details, near real-time data and historical information. Please note: Data at some locations are managed by regional control boards and accessible from the facility profile.

Aguasabon River 9/30 10/01 10/02 10/03 10/04 10/05 10/06
Kenogami Control Dam Level - - - - - - -
Flow 0.8 0.8 0.8 0.8 0.8 0.8 -
Long Lake Control Dam Level - - - - - - -
Flow 10.0 10.0 9.9 9.9 9.9 9.8 -
Long Lake Level 312.38 312.38 312.37 312.35 312.33 312.34 -
Flow - - - - - - -
Aguasabon Generating Station Level 273.76 273.79 273.78 273.77 273.74 273.70 -
Flow 12.6 3.3 19.7 16.4 18.6 17.0 -
English River 9/30 10/01 10/02 10/03 10/04 10/05 10/06
Cedars Channels Control Dam Level - - - - - - -
Flow - - - - - - -
Rat Rapids Control Dam Level - - - - - - -
Flow - - - - - - -
Root River Control Dam Level - - - - - - -
Flow - - - - - - -
Ear Falls/Lac Seul Generating Station Level - - - - - - -
Flow - - - - - - -
Manitou Falls Generating Station Level - - - - - - -
Flow - - - - - - -
Caribou Falls Generating Station Level - - - - - - -
Flow - - - - - - -
Kaministiquia River 9/30 10/01 10/02 10/03 10/04 10/05 10/06
Kashabowie Control Dam Level 459.09 459.08 459.07 459.07 459.06 459.06 -
Flow 0.5 0.5 0.5 0.5 0.5 0.5 -
Greenwater Lake Control Dam Level 453.62 453.61 453.60 453.60 453.59 453.59 -
Flow 0.8 0.7 0.7 0.7 0.7 0.7 -
Shebandowan Lake Control Dam Level 449.89 449.88 449.87 449.87 449.86 449.86 -
Flow 2.0 1.7 1.3 1.3 1.3 1.3 -
Silver Falls Generating Station Level 420.34 420.33 420.31 420.30 420.28 420.27 -
Flow 19.5 19.7 18.9 18.0 19.6 20.0 -
Upper Kam River (Dog River) at Hydroline Level 304.15 304.15 304.16 304.14 304.14 304.16 -
Flow 16.9 16.8 16.9 16.3 16.3 17.1 -
Kakabeka Falls Generating Station Level 277.83 277.83 277.90 277.71 277.71 277.85 -
Flow 22.3 21.3 22.1 22.4 18.4 19.1 -
Nipigon River 9/30 10/01 10/02 10/03 10/04 10/05 10/06
Waboose Control Dam Level 325.15 325.19 325.14 325.15 325.11 325.08 -
Flow 2.1 2.1 2.1 2.1 2.1 1.8 -
Mojikit Lake Level 325.08 325.05 325.04 325.03 325.02 325.01 -
Flow - - - - - - -
Ogoki Reservoir Level 325.11 325.12 325.09 325.09 325.07 325.04 -
Flow - - - - - - -
Summit Control Dam Level - - - - - - -
Flow 88.6 87.9 84.8 84.9 83.7 80.9 -
Lake Nipigon Level 259.86 259.84 259.83 259.83 259.82 259.81 -
Flow - - - - - - -
Pine Portage Generating Station Level 259.72 259.72 259.69 259.71 259.71 259.65 -
Flow - - - - - - -
Cameron Falls Generating Station Level 227.08 227.15 227.24 227.25 227.16 227.12 -
Flow - - - - - - -
Alexander Generating Station Level 203.22 203.27 203.20 203.20 203.18 203.21 -
Flow 302.6 309.2 308.5 308.9 306.8 308.6 -
Winnipeg River 9/30 10/01 10/02 10/03 10/04 10/05 10/06
Whitedog Falls Generating Station Level - - - - - - -
Flow - - - - - - -

River system data

Hydroelectric power is a clean, reliable, and low-cost way to produce the energy Ontario needs.

Ontario Power Generation (OPG) operates 66 hydroelectric stations and 239 dams on 24 river systems. These facilities help produce clean, reliable and low-cost electricity for Ontario.

This site provides information on water levels and flows at OPG hydroelectric facilities. Data is continuously collected using gauges that help safely manage OPG’s stations and dams in watersheds across the province.

Stay clear, stay safe

Around hydro stations, dams and surrounding waterways.