Forecasts
Publication: 2025-03-25 4:15 PM
This map includes markers representing the locations where the Ottawa River Regulating Committee provides hydrological forecasts to the public. During the spring freshet, forecasts are updated Monday to Friday (and weekends when conditions may change rapidly).
Forecast Values
| Location | Type of value |
2025-03-25 (Forecast) |
2025-03-26 (Forecast) |
2025-03-27 (Forecast) |
2025-03-28 (Forecast) |
|---|---|---|---|---|---|
| Ottawa River at Temiscaming Graph View | Flow (m3/s) | 875 | 875 | 875 | 875 |
| Ottawa River at Mattawa Graph View | Level (m) | 152.00 | 151.90 | 151.85 | 151.85 |
| Ottawa River at Pembroke Graph View | Level (m) | 112.05 | 112.00 | 111.95 | 111.95 |
| Lake Coulonge at Fort-Coulonge Graph View | Level (m) | 106.90 | 106.85 | 106.75 | 106.60 |
| Chats Lake at Arnprior Graph View | Level (m) | 74.45 | 74.40 | 74.40 | 74.35 |
| Lake Deschenes at Britannia Graph View | Level (m) | 59.15 | 59.15 | 59.10 | 59.10 |
| Flow (m3/s) | 2615 | 2580 | 2535 | 2485 | |
| Ottawa River at Gatineau (Hull) Graph View | Level (m) | 42.70 | 42.65 | 42.60 | 42.55 |
| Ottawa River at Thurso Graph View | Level (m) | 41.80 | 41.80 | 41.75 | 41.70 |
| Ottawa River at Carillon Graph View | Flow (m3/s) | 4750 | 4650 | 4500 | 4300 |
River Conditions Forecast
Last Update: 2025-03-25 4:02 PM
Next Update: 2025-03-26 4:00 PM
Flows and water levels along the main stem of the Ottawa River are above normal for this time of year. With the return to colder seasonal temperatures, spring runoff continue decreasing. Water levels and flows are stabilizing between Pembroke and Lake Deschenes and decreasing downstream of Lac Deschênes. Water levels and flows are expected to continue decreasing in all locations over the next few days. Later this weekend, weather bringing rain in the southern part of the basin and snow accumulation elsewhere could lead to an increase in spring runoff in the southern part of the basin.