Skip to content
Flooded river

Ontario Water Management

To view the data, you will need a Portable Document Format (PDF) viewer. Click here to get Adobe Reader, a free PDF reader.

Abitibi River

Abitibi River System WMP

PDF

Lake Abitibi and Twin Falls – Elevation & Flow

PDF

Black River – Flow

PDF

Iroquois Falls – Elevation & Flow

PDF

Island Falls – Elevation & Flow

PDF

Seine River

Raft Lake – Elevation & Flow

PDF

Calm Lake – Elevation & Flow

PDF

Sturgeon Falls – Elevation & Flow

PDF

Seine River System

Website

Rainy-Namakan Basin

Namakan Lake – Elevation & Flow

PDF

Rainy Lake – Elevation & Flow

PDF

Scheduled Outflow Changes

Water Body Scheduled Date Overflow (m³/s) Elevation Change Posted
(ISO 8601) Previous Upcoming Change Above Dam Below Dam (ISO 8601)
Rainy Lake 2024-10-11 130 104 -26 Increase Decrease 2024-10-11 09:34
Rainy Lake 2024-10-09 150 130 -20 Increase Decrease 2024-10-09 05:40
Rainy Lake 2024-10-06 200 150 -50 Increase Decrease 2024-10-06 05:26
Namakan Lake 2024-10-05 89 73 -16 Increase Decrease 2024-10-05 21:26
Rainy Lake 2024-10-03 250 200 -50 Decrease Decrease 2024-10-03 06:19
Rainy Lake 2024-09-22 200 250 50 Decrease Increase 2024-09-22 09:28
Namakan Lake 2024-09-20 83 101 18 Decrease Increase 2024-09-20 18:12
Rainy Lake 2024-09-18 150 200 50 Decrease Increase 2024-09-18 06:16
Namakan Lake 2024-09-14 98 81 -17 Increase Decrease 2024-09-15 10:16
Rainy Lake 2024-09-12 200 150 50 Increase Decrease 2024-09-12 05:11

Lake of the Woods

Lake of the Woods – Elevation & Flow

PDF

Lake of the Woods and Rainy-Namakan Drainage Basin

Website

IJC Fact Sheets and Videos

Understanding Rainy River and Rainy Lake Outflows

Video

International Joint Commission (IJC)

Fact Sheet

Rainy Lake and Namakan Lake are regulated by the International Joint Commission (IJC). Rainy Lake, Namakan Lake, The Seine River together with Lake of the Woods and many other water bodies form the Rainy-Lake of the Woods watershed. For information about how lake levels are controlled, please review these Fact Sheets provided by the IJC.

We welcome inquiries from the media, questions about our projects and recreation spaces, and gladly engage curiosity about our mission, vision, and more.

Contact us for media inquires and interview requests.