Ottawa River Levels


The following message is a report of water levels
at various locations along the Ottawa River
and is updated daily during the spring and once a week the rest of the year:

Links to external information!


This message is issued on August 31, 2010 at 3 p.m.
by the Ottawa River Regulating Committee.

Water levels will continue to be below normal for this time of the year. Water levels and flows are expected to remain constant or decrease slightly this week.


The following are observed levels at 8 a.m. today:

Lake Timiskaming     178.78 metres
     The reservoir is 80% full
Mattawa     152.16 metres
Pembroke     110.81 metres
Lake Coulonge     105.88 metres
Chats Lake at Arnprior     74.09 metres
Lake Deschenes at Britannia     57.62 metres
Hull     41.21metres
Grenville     41.16 metres
Gatineau River at Maniwaki     161.98 metres


The total outflow of the Ottawa River at Carillon is 770 cubic metres per second.

Principal reservoirs - Current water levels and system constraints


This message will be updated on September 7, 2010 at 2 p.m.

If you require more information, contact us by e-mail

This information is also available by toll-free telephone service, 24 hours per day, at the following numbers:

In the Ottawa-Hull region: ............................ 994-7079
Outside the region: .............................1-800-778-1246