Osoyoos Lake, located in the South Okanagan region of British Columbia, has recently hit its lowest water level in almost four decades. During early March, the lake was approximately 30 centimeters below its usual level for that time of year. This decline in water levels has led the Town of Osoyoos to temporarily shut down its powerboat-specific boat launch to safeguard the shoreline infrastructure.
Mayor Sue McKortoff emphasized the importance of protecting the marina from potential damage due to the low water levels. Osoyoos Lake, situated on the Canada-U.S. border, is managed under the U.S.-Canada Boundary Waters Treaty. Factors such as a low snowpack, mild winter, and decreased inflows have contributed to the current reduced lake levels.
David Hutchinson, overseeing the Canadian section of the International Osoyoos Lake Board of Control, highlighted the influence of Okanagan Lake on Osoyoos Lake’s water levels. The Okanagan Lake Regulation System, comprising a network of dams and structures, regulates water flow into Osoyoos Lake.
Recent measures by the Washington State Department of Ecology, including approval from the International Joint Commission to raise water levels through the Zosel Dam, aim to restore Osoyoos Lake’s water levels to normal by month-end. Despite these challenges, Osoyoos Lake remains open for tourists, albeit without access to the boat launch.
Mayor McKortoff urged visitors to be cautious of the changing water levels and potential hazards, emphasizing the importance of awareness and responsible behavior. Authorities are optimistic that powerboat activities will resume on Osoyoos Lake as water levels gradually increase towards the upcoming summer peak season.