The phrase which applies as we head into winter is ‘holding steady.’ Lake levels are holding steady and river flows hover around their average levels for this time of year. The level of Lake Manitoba is currently 811.18 feet, in the lower half of its desired operating range. It appears that the province reduced outflow at Fairford on October 30th, with the flow falling by about half to just 1127 cfs. The level of Lake St. Martin is holding steady at 798.04 feet, at the midpoint of its operating range. Flow on the Dauphin River is down to 2,295 cfs but should fall further with the reduced outflow upstream at Fairford. Flow on the Waterhen River is down to 2,479 cfs, right on the average flow for this time of year. The level of Lake Winnipegosis is holding steady at 830.39 feet, roughly its average level for this time of year. Flow on the Whitemud is 142 cfs. Flow on the Assiniboine is currently reading 904 cfs at Holland and 699 cfs at Headingly. The level of the Shellmouth Reservoir is also holding steady slightly to 1401.90 feet.
The fall has been uneventful and there is still nothing on the horizon that looks worrisome.
Lake update
Time: Nov. 1, 2023
Steep Rock: 810.86 ft
Westbourne: 811.50 ft
Mean level Lake Manitoba: 811.18 ft
Lake Manitoba desired operating range: 810.5 to 812.5 ft
Lake St. Martin: 798.04 ft
Lake St. Martin desired operating range: 797.0 to 800.0 ft
Lake Winnipegosis: 830.39 ft
Shellmouth Reservoir: 1,401.90 ft
River update
Time: Nov. 1, 2023
Portage Diversion: closed
Assiniboine at Holland: 904 cfs
Assiniboine at Headingly: 699 cfs
Waterhen: 2,479 cfs
Whitemud: 142 cfs
Fairford: 1,127 cfs
Dauphin: 2,295 cfs
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 Nov. 1, 2023
Association of Lake Manitoba Stakeholders 