The Lakehead Region Conservation Authority has issued a flood watch for the Whitefish River watershed west of Thunder Bay, Ontario, as ice jams and rising temperatures increase the risk of local flooding.
The notice, which was issued on April 17, 2026, impacts the townships of O’Connor, Gillies, and the Municipality of Oliver Paipoonge. According to the conservation authority, ice has formed blockages along the Whitefish River, preventing water from flowing normally. This issue is being made worse by an above-average snowpack that is melting quickly as temperatures rise, while the still-frozen ground prevents the soil from absorbing the extra water.
Environment Canada is predicting an additional 5 to 10 millimetres of precipitation in the area, with temperatures expected to drop near the freezing mark overnight. The flood watch is set to remain in place until 10 a.m. on Monday, April 20, 2026, though this could change if conditions improve or deteriorate more quickly than anticipated.
Residents in these areas are encouraged to keep a close watch on local water levels, avoid travel on roads that may be flooded, and keep children and pets away from rivers and streams. Anyone who observes flooding is asked to report it to the conservation authority by calling 807-344-5857.
The Whitefish River area has a history of spring flooding, with past ice jams and snowmelt events causing road closures in O’Connor, Gillies, and Oliver Paipoonge in recent years. The conservation authority, established in 1963, uses its specialized monitoring program to track streamflow, weather forecasts, and snow conditions to help keep local communities informed during the spring thaw.
