Lake Manitoba update: July 16, 2018

Strong winds are playing havoc with water levels and river flows, so take this week’s report with more than just a grain of salt. The average gauge reading on Lake Manitoba is currently 811.55 feet. Wind is driving water into the south of Lake Winnipegosis, raising its level (833.76 feet) and flow on the Waterhen River (6851 cfs). Outflow at Fairford is also wind-affected and registering low, at 3,991 cfs. That will rise when the winds subside. The level of Lake St. Martin has reached an historic mark: it is currently 800.00 feet (and is probably below that – the gauge reading is wind-affected). This marks the first time in a very long time that Lake St. Martin has reached the top end of its operating range (800.0 0 feet). I will do a little digging to check the last time that it reached this level and will report back. Flow on the Assiniboine was affected by rain last week and is currently 3,002 cfs at Holland and 2,896 cfs at Headingly. The Shellmouth Reservoir is down this week to to 1403.15 feet.

River update
Time: 9:00 AM July 16, 2018
Portage Diversion: closed
Assiniboine at Holland: 3,002 cfs
Assiniboine at Headingly: 2,896 cfs
Waterhen: 6,851 cfs
Whitemud: 71 cfs
Fairford: 3,991 cfs
 
Lake update
Time: 9:00 AM July 16, 2018
Steep Rock: 811.55 ft
Westbourne: 811.55 ft
Mean level Lake Manitoba: 811.55
Lake Manitoba desired operating range: 810.5 to 812.5 ft
Lake St. Martin: 800.00 ft
Lake St. Martin desired operating range: 797.0 to 800.0 ft
Lake Winnipegosis: 833.76 ft
Shellmouth Reservoir: 1403.15 ft

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Lake Manitoba update: July 8, 2018

Last week’s estimate of the lake level was wind affected and too low. This week’s estimate looks more reliable with the two gauges showing similar readings. The current estimate of the level of Lake Manitoba is 811.81 feet. It appears the lake has risen with the recent rains. Inflow on the Waterhen River remains high at 6,498 cfs. This is well above the long-term average flow of 4,800 cfs for early July. The high continuing high inflow from the Waterhen River (due to a high level of Lake Winnipegosis) is keeping the level of Lake Manitoba from declining further. Outflow at Fairford is 5,898 cfs this morning. Flow on the Whitemud River has dropped to 167 cfs. The level of Lake Winnipegosis is currently 832.82 feet, unchanged from last week. The level of Lake St. Martin is down this week to 800.03 feet. The flow on the Assiniboine continues to fall and is currently 2,779 cfs at Holland and 2,278 cfs at Headingly. The Shellmouth Reservoir is down this week to to 1403.44 feet.

River update
Time: 9:30 AM July 8, 2018
Portage Diversion: closed
Assiniboine at Holland: 2,779 cfs
Assiniboine at Headingly: 2,278 cfs
Waterhen: 6,498 cfs
Whitemud: 167 cfs
Fairford: 5,898 cfs
 
Lake update
Time: 9:30 AM July 8, 2018
Steep Rock: 811.78 ft
Westbourne: 812.84 ft
Mean level Lake Manitoba: 811.81
Lake Manitoba desired operating range: 810.5 to 812.5 ft
Lake St. Martin: 800.03 ft
Lake St. Martin desired operating range: 797.0 to 800.0 ft
Lake Winnipegosis: 832.84 ft
Shellmouth Reservoir: 1403.44 ft

Lake Manitoba update: July 2, 2018

Strong west winds are shifting water on Lake Manitoba making the estimate of the lake level a bit suspect: the current estimate of the level of Lake Manitoba this morning is 811.49 feet. Inflow on the Waterhen River remains high at 6,533 cfs, while outflow at Fairford has risen to 6,251 cfs. Flow on the Whitemud River rose sharply with the recent rain to 205 cfs. The level of Lake Winnipegosis is currently 832.82 feet, remaining above its long term average level. The level of Lake St. Martin is down this wek to 800.16 feet. The flow on the Assiniboine continues to fall and is currently 2,802 cfs at Holland and 2,684 cfs at Headingly. The Shellmouth Reservoir is down this week to to 1403.74 feet.

River update
Time: 8:30 AM July 2, 2018
Portage Diversion: closed
Assiniboine at Holland: 2,802 cfs
Assiniboine at Headingly: 2,64 cfs
Waterhen: 6,533 cfs
Whitemud: 205 cfs
Fairford: 6,251 cfs
 
Lake update
Time: 8:30 AM July 2, 2018
Steep Rock: 811.71 ft
Westbourne: 812.27 ft
Mean level Lake Manitoba: 811.49
Lake Manitoba desired operating range: 810.5 to 812.5 ft
Lake St. Martin: 800.16 ft
Lake St. Martin desired operating range: 797.0 to 800.0 ft
Lake Winnipegosis: 832.84 ft
Shellmouth Reservoir: 1403.74 ft

Lake Manitoba update: June 24, 2018

Shifting winds are playing havoc with the gauges on Lake Manitoba, with east winds this morning driving water away from the Steep Rock gauge and toward the Westbourne gauge. The current estimate of the level of Lake Manitoba this morning is 811.76 feet, but it was lower than that yesterday (811.71 ft) when the winds were relatively calm. Flow on the Waterhen River remains high at 6,427 cfs. The level of Lake Winnipegosis is currently 832.45 feet, a level that is also wind affected. Flow at Fairford is down to 5,297 cfs, but that too is wind affected and will rise once the winds shift back to their normal northwesterly direction. Flow on the Whitemud River is now down to 78 cfs. The level of Lake St. Martin is unchanged at 800.26 feet. The flow on the Assiniboine is falling and is currently 3,390 at Holland and 3,602 cfs at Headingly. The Shellmouth Reservoir is down this week to to 1404.43 feet.

River update
Time: 7:00 AM June 24, 2018
Portage Diversion: closed
Assiniboine at Holland: 3,390 cfs
Assiniboine at Headingly: 3,602 cfs
Waterhen: 6,427 cfs
Whitemud: 78 cfs
Fairford: 5,297 cfs
 
Lake update
Time: 7:00 AM June 24, 2018
Steep Rock: 811.71 ft
Westbourne: 812.81 ft
Mean level Lake Manitoba: 811.76
Lake Manitoba desired operating range: 810.5 to 812.5 ft
Lake St. Martin: 800.26 ft
Lake St. Martin desired operating range: 797.0 to 800.0 ft
Lake Winnipegosis: 832.45 ft
Shellmouth Reservoir: 1404.43 ft

Lake Manitoba update: June 18, 2018

The website it back up this morning and relatively calm winds give us a good look at lake levels. The current level of Lake Manitoba is 811.76 feet. Flow on the Waterhen is 6,463 cfs. The level of Lake Winnipegosis is currently 832.38 feet. Flow at Fairford is down to 5,650 cfs, and will fall further as the level of Lake Manitoba declines. Flow on the Whitemud River is now down to 148 cfs. The level of Lake St. Martin is up slightly to 800.26 feet. The flow on the Assiniboine is rising following the rains associated with the storms last week and is currently 4,838 at Holland (the gauge was calibrated this week) and 3,708 cfs at Headingly. The Shellmouth Reservoir is up this week to to 1404.76 feet.

River update
Time: 7:30 AM June 18, 2018
Portage Diversion: closed
Assiniboine at Holland: 4,838 cfs
Assiniboine at Headingly: 3,708 cfs
Waterhen: 6,463 cfs
Whitemud: 148 cfs
Fairford: 5,650 cfs

Lake update
Time: 7:30 AM June 18, 2018
Steep Rock: 811.71 ft
Westbourne: 812.81 ft
Mean level Lake Manitoba: 811.76
Lake Manitoba desired operating range: 810.5 to 812.5 ft
Lake St. Martin: 800.26 ft
Lake St. Martin desired operating range: 797.0 to 800.0 ft
Lake Winnipegosis: 832.28 FT
Shellmouth Reservoir: 1404.76 ft

Lake Manitoba update: June 10, 2018

Strong winds are again making the estimates subject to considerable error. The current estimate of the level of Lake Manitoba is 811.80 feet. Flow on the Waterhen is being affected by SE winds on Lake Winnipegosis, and is down to to 6,286 cfs but that will increase when the wind subsides / changes direction. The gauge on Lake Winnipegosis is currently offline. Flow at Fairford is up to 6,710 cfs. Flow on the Whitemud River is is now down to 212 cfs. The level of Lake St. Martin fell this week and is back down to 800.20 feet. The flow on the Assiniboine is up this week: the gauge at Holland is offline, but the flow at Headingly has risen to 2,825 cfs. The Shellmouth Reservoir is up this week to 1403.67 feet.

River update
Time: 4:30 PM June 10, 2018
Portage Diversion: closed
Assiniboine at Holland: gauge offline
Assiniboine at Headingly: 2,825 cfs
Waterhen: 6,286 cfs
Whitemud: 212 cfs
Fairford: 6,710 cfs

Lake update
Time: 4:30 PM June 10, 2018
Steep Rock: 811.93 ft
Westbourne: 812.68 ft
Mean level Lake Manitoba: 811.80
Lake Manitoba desired operating range: 810.5 to 812.5 ft
Lake St. Martin: 800.20 ft
Lake St. Martin desired operating range: 797.0 to 800.0 ft
Lake Winnipegosis: gauge offline
Shellmouth Reservoir: 1403.67 ft