Ottawa RiverRegulationPlanning BoardCommission de planificationde la régularisationde la rivière des Outaouais

Current Conditions

Publication: 2021-04-10

Snow Map

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

Ottawa River at Temiscaming

Current Conditions

Daily Outflow (m3/s)
n/a
Graph View and Advanced Data

Grenville

Current Conditions

Water levels in metres
(2021-04-10 15:00:00)
41.28
Graph View and Advanced Data

Thurso

Current Conditions

Water levels in metres
(2021-04-10 15:00:00)
41.34
Graph View and Advanced Data

Gatineau (Hull)

Current Conditions

Water levels in metres
(2021-04-10 15:00:00)
41.59
Graph View and Advanced Data

Lake Coulonge at Fort-Coulonge

Current Conditions

Water levels in metres
(2021-04-10 15:00:00)
106.21
Graph View and Advanced Data

Ottawa River at Carillon

Current Conditions

Water levels in metres
(2021-04-10 15:00:00)
41.11
Daily Outflow (m3/s)
(2021-04-10 15:00:00)
1910
Graph View and Advanced Data

Lake Deschenes at Britannia (Ottawa)

Current Conditions

Water levels in metres
(2021-04-10 14:00:00)
58.26
Daily Outflow (m3/s)
(2021-04-10 14:00:00)
1150
Graph View and Advanced Data

Ottawa River at Chats Falls GS

Current Conditions

Water levels in metres
(2021-04-10 16:00:00)
74.12
Daily Outflow (m3/s)
(2021-04-10 16:00:00)
1199
Graph View and Advanced Data

Ottawa River at Chenaux GS

Current Conditions

Water levels in metres
(2021-04-10 16:00:00)
85.98
Daily Outflow (m3/s)
(2021-04-10 16:00:00)
952
Graph View and Advanced Data

Pembroke

Current Conditions

Water levels in metres
(2021-04-10 14:00:00)
111.29
Graph View and Advanced Data

Des Joachims

Current Conditions

Water levels in metres
(2021-04-10 16:00:00)
151.77
Daily Outflow (m3/s)
(2021-04-10 16:00:00)
526
Graph View and Advanced Data

Mattawa

Current Conditions

Water levels in metres
(2021-04-10 14:00:00)
151.86
Graph View and Advanced Data

Ottawa River at Otto Holden GS

Current Conditions

Water levels in metres
(2021-04-10 16:00:00)
177.13
Daily Outflow (m3/s)
(2021-04-10 16:00:00)
263
Graph View and Advanced Data

River Levels and Flows

Water levels at 24:00h in metres 2021-04-03 2021-04-04 2021-04-05 2021-04-06 2021-04-07 2021-04-08 2021-04-09 2021-04-10
Otto Holden Generating Station Graph View and Advanced Data Agency: OPG 176.18 176.29 176.36 176.39 176.71 176.86 177.04 177.13
Mattawa Graph View and Advanced Data Agency: WSC 151.45 151.47 151.57 151.64 151.36 151.16 151.72 151.86
Des Joachims Generating Station Graph View and Advanced Data Agency: OPG 150.73 150.82 150.94 150.81 151.02 151.06 151.48 151.77
Pembroke Graph View and Advanced Data Agency: OPG 111.78 111.68 111.62 111.63 111.64 111.50 111.31 111.29
Lake Coulonge at Fort-Coulonge Graph View and Advanced Data Agency: HQ 106.43 106.30 106.18 106.22 106.20 106.19 106.21 106.21
Chenaux Generating Station Graph View and Advanced Data Agency: OPG 86.05 85.86 85.77 85.65 86.01 86.23 85.95 85.98
Chats Lake at Arnprior Graph View and Advanced Data Agency: OPG 74.20 74.16 74.04 74.01 74.14 74.11 74.07 74.12
Lake Deschenes at Britannia (Ottawa) Graph View and Advanced Data Agency: WSC 58.94 58.90 58.86 58.72 58.53 58.51 58.45 58.26
Gatineau (Hull) Graph View and Advanced Data Agency: HQ 42.18 42.18 42.11 41.95 41.79 41.77 41.74 41.59
Thurso Graph View and Advanced Data Agency: HQ 41.55 41.58 41.56 41.49 41.40 41.40 41.41 41.34
Grenville Graph View and Advanced Data Agency: HQ 41.34 41.41 41.40 41.36 41.30 41.32 41.33 41.28
Carillon Generating Station Graph View and Advanced Data Agency: HQ 40.80 40.97 41.04 41.04 41.05 41.09 41.11 41.11
Average Daily Outflow (m3/s) 2021-04-03 2021-04-04 2021-04-05 2021-04-06 2021-04-07 2021-04-08 2021-04-09 2021-04-10
Ottawa River at Temiscaming Graph View and Advanced Data Agency: PSPC 440 394 384 379 410 271 233
Ottawa River at Otto Holden GS Graph View and Advanced Data Agency: OPG 488 442 442 445 347 255 241 263
Des Joachims Graph View and Advanced Data Agency: OPG 786 677 648 841 538 419 461 526
Ottawa River at Chenaux GS Graph View and Advanced Data Agency: OPG 1658 1561 1407 1274 1192 1219 1046 952
Ottawa River at Chats Falls GS Graph View and Advanced Data Agency: OPG 2085 2061 1954 1645 1398 1553 1286 1199
Lake Deschenes at Britannia (Ottawa) Graph View and Advanced Data Agency: WSC 2223 2147 2073 1850 1549 1484 1421 1150
Ottawa River at Carillon Graph View and Advanced Data Agency: HQ 3588 3328 3289 3070 2668 2400 2330 1910

River Conditions Forecast

Last Update: 2021-04-06 3:45 PM
Next Update: 2021-04-13 3:00 PM

Water levels and flows continue to slowly recede in most areas along the Ottawa River. With forecasts of above-normal temperatures over the next few days, the remaining snow in the northern parts of the basin is expected to continue melting over the next week. Most of the spring runoff from these northern areas will be stored in reservoirs in that part of the basin as principal reservoirs are being managed to reach their target summer levels. The general trend, for the full length of the river, is for a steady decrease in flows and levels as the remaining spring runoff in the central part of the basin recedes. Note: refer to the April 6 bulletin by the Ottawa River Secretariat regarding daily forecasting of river conditions no longer being required.

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. These are used for the integrated management of the principal reservoirs within the Ottawa River Basin and are also of interest to basin residents.

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.

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 (see Contact us) for information on how to obtain historical data directly from the data owner.

Users of flow data and water level data shown on this website are cautioned to consider the unverified nature of the information before using it for decisions making.  Please see the Disclaimer for further details.

The flow rate 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 follow safety rules at all times.

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 the last 30 years. 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 P25% and P75%

 : Above normal conditions, P is equal or greater than P75%

 : Below normal conditions, P is lower than P25%

: Current day value or percentile not available