PUBLIC INFORMATION NOTICE

High flow conditions into Marmion Lake developed in late September and are expected to continue through October and potentially November.  Rainfall amounts observed in Atikokan, Ontario during the month of September were almost two times the normal average rainfall.  Inflow conditions of this magnitude during the fall season were last observed in the year 1941.

Raft Lake, Calm Lake and Sturgeon Falls dams remain in full compliance within their operating parameters as set out in the Seine River Water Management Plan.  The spillways at the Calm Lake and Sturgeon Falls dams are open at this time and are expected to remain open for the foreseeable future.

All users are advised to use appropriate care and caution along the Seine River until high flow advisories have been terminated and levels/flows have receded towards normal conditions.

Lake Abitibi elevation continues to increase at a rate of about 6 cm per day. This morning our measurement station in La Sarre recorded an elevation of 264.994 m (CGD). The lake level is expected to reach its maximum normal elevation of 265.390 m (CGD) by Friday, May 17th.

Spill operations have been underway for several days at our Twin Falls and Iroquois Falls generating stations and have been increased as much as possible at this time.

On Friday, May 10th, inflow conditions had peaked at 1116 m3/s and has shown signs of a declining trend. However, basin conditions remain very strong and well above normal.

H2O Power strongly advises that all users always exercise extreme caution and due care when accessing and using Lake Abitibi and the Abitibi River System. Daily water levels and flow data is made available on our website. Please visit www.h2opower.com/water-management/ for further information.

2019-05-13 Public Notice – Abitibi River System Levels & Flows