Lake Manitoba update: June 3, 2018

Strong winds are playing havoc with the gauges on the lakes and affecting river flows as a consequence, making the estimates subject to considerable error. It is likely that the level of Lake Manitoba rose on the week with the substantial rainfall in recent days, but the current estimate of the level of 811.93 feet seems high. I will update the estimate later in the week if winds calm. Flow on the Waterhen is up to 7,628 cfs but this has been affected by winds that have driven water into the south basin of Lake Winnipegosis that is up to 233.01 feet as a result. Flow at Fairford is down to 5,650 cfs, which is also wind affected. Flow on the Whitemud River is up this week with the rain and is now 290 cfs. The level of Lake St. Martin rose this week and is now back up to 800.39 feet. The flow on the Assiniboine is down from last week but has started to rise following the rain: the gauge at Holland is still malfunctioning, but the flow at Headingly is now down to 1,589 cfs. The Shellmouth Reservoir is up this week to to 1402.89 feet.

River update
Time: 6:30 AM June 3, 2018
Portage Diversion: closed
Assiniboine at Holland: gauge malfunction
Assiniboine at Headingly: 1,589 cfs
Waterhen: 7,628 cfs
Whitemud: 290 cfs
Fairford: 5,650 cfs

Lake update
Time: 6:30 AM June 3, 2018
Steep Rock: 811.78 ft
Westbourne: 812.04 ft
Mean level Lake Manitoba: 811.93
Lake Manitoba desired operating range: 810.5 to 812.5 ft
Lake St. Martin: 800.39 ft
Lake St. Martin desired operating range: 797.0 to 800.0 ft
Lake Winnipegosis: 833.01 ft
Shellmouth Reservoir: 1402.89 ft

2 thoughts on “Lake Manitoba update: June 3, 2018

  1. The winds have calmed from the weekend, though not completely. The estimate of the lake level at 9:30 this morning is 811.84 feet.

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