Ottawa RiverRegulationPlanning BoardCommission de planificationde la régularisationde la rivière des Outaouais

INCREASING FLOOD RISK ALONG THE OTTAWA RIVER (Mattawa to the Montreal Region). See the River Conditions Forecast message that is updated daily. Read more

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Current Conditions

Publication: 2025-04-30

Snow Map

Locations to display: River locations only | Reservoirs only | Other locations

Timiskaming at Haileybury

Current Conditions

Water levels in metres
(2025-04-30 06:00:00)
178.65
Graph View and Advanced Data

Poisson Blanc

Current Conditions

Water levels in metres
(2025-04-30 07:00:00)
200.3
Average Discharges (m3/s)
(2025-04-30 08:00:00)
254
Graph View and Advanced Data

Kiamika

Current Conditions

Water levels in metres
(2025-04-30 07:00:00)
267
Average Discharges (m3/s)
n/a
Graph View and Advanced Data

Mitchinamecus

Current Conditions

Water levels in metres
(2025-04-30 07:00:00)
379.74
Average Discharges (m3/s)
(2025-04-30 07:00:00)
36
Graph View and Advanced Data

Baskatong

Current Conditions

Water levels in metres
(2025-04-30 07:00:00)
217.43
Average Discharges (m3/s)
(2025-04-30 07:00:00)
327
Graph View and Advanced Data

Cabonga

Current Conditions

Water levels in metres
(2025-04-30 07:00:00)
360.52
Average Discharges (m3/s)
(2025-04-30 07:00:00)
4.3
Graph View and Advanced Data

Bark Lake

Current Conditions

Water levels in metres
(2025-04-30 00:00:00)
310.7
Average Discharges (m3/s)
(2025-04-30 00:00:00)
82
Graph View and Advanced Data

Des Joachims

Current Conditions

Water levels in metres
(2025-04-30 07:00:00)
150.24
Average Discharges (m3/s)
(2025-04-30 07:00:00)
2643
Graph View and Advanced Data

Timiskaming at Temiscaming

Current Conditions

Water levels in metres
(2025-04-30 05:00:00)
178.35
Average Discharges (m3/s)
(2025-04-30 05:00:00)
2075.93
Graph View and Advanced Data

Kipawa

Current Conditions

Water levels in metres
(2025-04-30 07:00:00)
268.19
Average Discharges (m3/s)
(2025-04-30 07:00:00)
172
Graph View and Advanced Data

Lady Evelyn

Current Conditions

Water levels in metres
(2025-04-30 00:00:00)
288.29
Average Discharges (m3/s)
(2025-04-30 00:00:00)
4.3
Graph View and Advanced Data

Quinze

Current Conditions

Water levels in metres
(2025-04-30 07:00:00)
262.41
Average Discharges (m3/s)
(2025-04-30 07:00:00)
657
Graph View and Advanced Data

Rapide-7

Current Conditions

Water levels in metres
(2025-04-30 07:00:00)
308.09
Average Discharges (m3/s)
(2025-04-30 07:00:00)
76
Graph View and Advanced Data

Dozois

Current Conditions

Water levels in metres
(2025-04-30 07:00:00)
343.24
Average Discharges (m3/s)
(2025-04-30 07:00:00)
3
Graph View and Advanced Data

Reservoir Levels and Discharges

Water levels at 24:00h in metres and average discharge (m3/s)Reading type
& Agency*
2025-04-232025-04-242025-04-252025-04-262025-04-272025-04-282025-04-292025-04-30
DozoisGraph View and Advanced DataLevel - HQ341.98342.10342.24342.44342.64342.85342.93343.24
Discharge - HQ22333333
Rapide-7Graph View and Advanced DataLevel - HQ307.34307.36307.41307.50307.60307.76307.83308.09
Discharge - HQ26923323423424618915676
QuinzeGraph View and Advanced DataLevel - MELCC261.48261.55261.67261.82261.98262.14262.19262.41
Discharge - MELCC533577592603599613637657
Lady EvelynGraph View and Advanced DataLevel - OPG287.34287.45287.58287.75287.92288.08288.13288.29
Discharge - OPG238000124
KipawaGraph View and Advanced DataLevel - MELCC267.65267.70267.77267.89267.97268.06268.09268.19
Discharge - MELCC167168170177181182183172
Timiskaming at HaileyburyGraph View and Advanced DataLevel - WSC177.50177.67177.86178.10178.25178.42178.46178.65
Timiskaming at TemiscamingGraph View and Advanced DataLevel - WSC177.30177.48177.66177.89177.99178.12178.15178.35
Discharge - PSPC13321404153017121775181919682076
Des JoachimsGraph View and Advanced DataLevel - OPG149.52149.56149.53149.64149.79149.95150.02150.24
Discharge - OPG18161900205522252415241224252643
Bark LakeGraph View and Advanced DataLevel - OPG309.71309.81309.94310.09310.27310.48310.55310.70
Discharge - OPG127107919691717882
CabongaGraph View and Advanced DataLevel - HQ360.16360.19360.22360.30360.35360.39360.41360.52
Discharge - HQ44444444
BaskatongGraph View and Advanced DataLevel - HQ214.60214.94215.25215.62216.15216.68216.85217.43
Discharge - HQ224226245288291320346327
MitchinamecusGraph View and Advanced DataLevel - MELCC378.80378.88378.96379.12379.28379.44379.48379.74
Discharge - MELCC1899999936
KiamikaGraph View and Advanced DataLevel - MELCC266.28266.38266.46266.58266.73266.86266.89267.00
Discharge - MELCC1313131318242431
Poisson BlancGraph View and Advanced DataLevel - MELCC198.93199.13199.34199.56199.78200.00200.05200.30
Discharge - EG183184185185186217250254

*Agencies

HQ – Hydro Québec
MELCCFP – Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs
PSPC – Public Services and Procurement Canada
OPG – Ontario Power Generation
WSC – Water Survey Canada
EG – Evolugen
VG – City of Gatineau
RVCA – Rideau Valley Conservation Authority
MVCA – Mississippi Valley Conservation Authority

River Conditions Forecast

Last Update: 2025-04-29 4:28 PM
Next Update: 2025-04-30 4:30 PM

Flows and water levels on the main stem of the Ottawa River continue to rise due to increased runoff from ongoing rainfall combined with snowmelt from the mountainous areas of the basin. Minor flood levels have been reached in Pembroke, Lake Coulonge and Britannia, and should be reached in Mattawa and Chats Lake on Thursday. Levels may reach or exceed the major flood level from Lake Coulonge to Lake Deschenes depending on the rapidity of snowmelt and precipitation amount received today. From Gatineau (Hull Marina) down to the Montreal Region, levels are expected to exceed minor flood levels but should remain below major flood levels. Our website Forecasts section provides expected water levels over a four-day horizon in your area. Levels are expected to peak starting Thursday-Friday between Lake Coulonge and Lake Deschenes, and starting Saturday from Gatineau down to the Montreal Region. Uncertain weather factors play into estimating peak levels. On April 29 peak level estimates are: Pembroke (113.15 m), Lac Coulonge (108.40 m), Chats Lake (75.45 m), Lake Deschenes (60.05 m), Gatineau -Hull marina (44.00 m) and Thurso (42.60 m).

View complete forecast

Additional content

About this map

This map includes markers representing the location of gauges where information on flows and water levels are available. Data collected at gauges shown on the ‘River locations only’ and ‘Reservoirs only’ maps is used for the integrated management of the principal reservoirs within the Ottawa River Basin.

Instruction:

The coloured markers on this map depict conditions (level or flow) as a range of conditions categorized in three groups:  for normal conditions,  for above normal,  for below normal. The marker is  when the current day’s value or percentile are not available.  On the ‘River locations only’ map, the colour of the markers for locations with run-of-river facilities is based on flow conditions.  On the ‘Reservoirs only’ map, the marker colour for all locations is based on the water level in the reservoir.

Click on any marker to see the most recent data from this location and what type of data is measured there. To view data related to the principal reservoirs in the basin, select ‘Reservoirs only’ in the upper right corner. Near real-time and historical data is available for additional locations by selecting ‘Graph View and Advanced Data’. Water levels at 24:00 means at midnight.

Terms of Use:

The data provided by this web service may not be reproduced or redistributed.  Contact the Ottawa River Regulation Secretariat  for information on how to obtain historical data directly from the data owner.

Users of the flow data, water level data, and hydrological forecasts shown on this website must recognize that such information is considered preliminary data.  Users must therefore accept that the information provided carries an unspecified level of uncertainty and are advised to be cautious if they intend to use the information for decision-making.  Please see the Disclaimer for further details.

The flow rates and actual levels can change rapidly without warning, particularly during the freshet period. We advise those using bodies of water to exercise caution and to always follow established safety guidelines when near water.

Understanding Range of Conditions:

The three ranges are based on percentiles, which are computed from the observations of the current day of the year over a period of 30 years (1991-2020). The percentile (P) is the percent of all data that is lower than the actual value for the current day of the year.

: Normal conditions, between P10% and P90%

: Above normal conditions, P is equal or greater than P90%

: Below normal conditions, P is lower than P10%

: Current day value or percentile not available