Compiled and reported by Dr. Scott Forbes
Strongs wind are affecting lake levels and river flows making this week’s update highly tentative. Lake Manitoba is still sitting around 810.20 feet, well below the minimum level of its desired operating range (810.50 feet). The outflow at Fairford River is a trickle at just 378 cfs while the main inflow from the Waterhen River has risen to 1,632 cfs. The level of Lake Winnipegosis is wind-affected reading 830.05 feet right now. Flow on the Whitemud River is 60 cfs and rising with the rain. Lake St. Martin also appears to be wind-affected with the gauge reading 796.39 feet. Flow on the Dauphin River has dropped to 459 cfs. Flow on the Assiniboine has dropped to 586 cfs at Holland and 586 cfs at Headingly. The level of the Shellmouth Reservoir is down on the week to 1399.08 feet.
River update
Time: October 31, 2021
Portage Diversion: closed
Assiniboine at Holland: 586 cfs
Assiniboine at Headingly: 586 cfs
Waterhen: 1,632 cfs
Whitemud: 60 cfs
Fairford: 378 cfs
Dauphin: 459 cfs
Lake update
Time: October 31, 2021
Steep Rock: 810.15 ft
Westbourne: 810.26 ft
Mean level Lake Manitoba: 810.20 ft
Lake Manitoba desired operating range: 810.5 to 812.5 ft
Lake St. Martin: 796.39 ft
Lake St. Martin desired operating range: 797.0 to 800.0 ft
Lake Winnipegosis: 830.05 ft
Shellmouth Reservoir: 1399.08 ft
Extracted from the Environment and Climate Change Canada Real-time Hydrometric Data web site (https://wateroffice.ec.gc.ca/mainmenu/real_time_data_index_e.html) on October 31, 2021.
Association of Lake Manitoba Stakeholders 