In Calgary, the Elbow and Bow rivers are no longer docile ponies ready for the show ring; they have transformed into rough stock that could challenge even the most experienced riders at the Calgary Stampede. Frank Frigo, manager of environmental management for the city, warns that June is a particularly significant month in determining both water supply and flood risk for the rest of the season. Calgary has swiftly transitioned from drought concerns to flood worries. Precipitation levels in the Elbow and Bow catchment areas have surged to 130% of normal, a stark contrast to the dry conditions experienced just a few months ago. Reservoirs that control the Bow and Elbow Rivers are releasing water at normal rates. However, John Jagorinec, water treatment manager for the City of Calgary, emphasizes that conditions can change rapidly. The city maintains a 10-hour notice for potential high-flow events from upstream sources. Preemptively lowering reservoir levels during this time of year, when snowpack conditions permit, creates additional capacity to accommodate potential floodwaters. Striking a delicate balance is crucial, as capturing the tail end of runoff is essential for reservoir replenishment. Missing this opportunity can result in delays of up to a year for the reservoir to recover. The balancing act of managing water levels will continue until snow melt and June rains conclude for the year.
Calgary Braces for Flood Risk as Rivers Rise
