Temporary flow reduction at Fairford

The Province announced that they would be temporarily reducing flow through Fairford for the purpose of collecting in-stream flow data and to conduct an underwater inspection of the structure. Flows will be reduced from this Monday through next Wednesday (Oct. 4). The announcement can be found here:

http://news.gov.mb.ca/news/index.html?archive=&item=42191

SF

 

Advertisements

Lake Manitoba update: Sept. 24, 2017

Heavy rains this week have arrested the decline in the level of Lake Manitoba. The lake has risen to 812.76 feet, more than a quarter foot above the top end of the operating range. Outflow at Fairford is 9,111 cfs this while inflow from the Waterhen is 8,264 cfs. Flow on the Waterhen remains more than double its average for this time of year. That is because the level of Lake Winnipegosis remains above its long term average level, currently sitting at 833.23 feet: that is 2.6 feet above its long term mean level. The level of Lake St. Martin is unchanged this week at 802.30 feet. The Whitemud River is springing back to life in the rain and flow on it has risen to 85 cfs. Flow on the Assiniboine is also rising and is now 989 cfs at Holland and 1,165 cfs at Headingly.

River update
Time: 9:00 AM September 24, 2017
Portage Diversion: closed
Assiniboine at Holland: 989 cfs
Assiniboine at Headingly: 1,165 cfs
Waterhen: 8,264 cfs
Whitemud: 85 cfs
Fairford: 9,111 cfs
 
Lake update
Time: 9:00 AM September 24, 2017
Steep Rock: 812.57 ft
Westbourne: 812.96 ft
Mean level Lake Manitoba: 812.76 ft
Lake Manitoba desired operating range: 810.5 to 812.5 ft
Lake St. Martin: 802.30
Lake St. Martin desired operating range: 797.0 to 800.0 ft
Lake Winnipegosis: 833.23 ft
Shellmouth Reservoir: 1401.61 ft

Lake Manitoba update: Sept. 18, 2017

Strong winds have been causing fluctuating water levels on the lakes, making estimates subject to error. The current level of Lake Manitoba is 812.63 feet, still above the top end of the operating range (812.5 feet). Outflow at Fairford is 8,370 cfs this morning, only slightly higher than inflow from the Waterhen at 7,928 cfs. Flow on the Waterhen remains more than double its average for this time of year. That is because the level of Lake Winnipegosis remains well above its long term average level, currently sitting at 833.07 feet: that level is 2.4 feet above its long term mean. Lake St. Martin continues to drop and is now sitting at 802.3 feet. Flow on the Assiniboine is currently 706 cfs at Headingly.

River update
Time: 8:00 AM September 18, 2017
Portage Diversion: closed
Assiniboine at Holland: gauge offline
Assiniboine at Headingly: 706 cfs
Waterhen: 7,928 cfs
Whitemud: 25 cfs
Fairford: 8,370 cfs
 
Lake update
Time: 8:00 AM September 18, 2017
Steep Rock: 812.43 ft
Westbourne: 812.83 ft
Mean level Lake Manitoba: 812.63 ft
Lake Manitoba desired operating range: 810.5 to 812.5 ft
Lake St. Martin: 802.30
Lake St. Martin desired operating range: 797.0 to 800.0 ft
Lake Winnipegosis: 833.07 ft
Shellmouth Reservoir: 1401.90 ft

Lake Manitoba update: Sept. 10, 2017

Strong winds are playing havoc with the gauges on the lakes right now, and are also affecting river flows into an out of Lake Manitoba. The current estimate of the level of Lake Manitoba is 812.53 feet, but that number is at best approximate. South winds are pushing water into the north basin of the lake, and that raises outflow at Fairford which is currently 10,241 cfs. Lake Winnipegosis is currently 832.58 feet and that level is also wind affected. Flow on the Waterhen River is down to 7,662 cfs. The gauge on Lake St. Martin is currently offline. Flow on the Assiniboine is down to a trickle, being 537 cfs at Holland; and 999 cfs at Headingly.

River update
Time: 8:00 PM September 10, 2017
Portage Diversion: closed
Assiniboine at Holland: 537 cfs
Assiniboine at Headingly: 999 cfs
Waterhen: 7,663 cfs
Whitemud: 17 cfs
Fairford: 10,241 cfs
 
Lake update
Time: 8:00 PM September 10, 2017
Steep Rock: 812.80 ft
Westbourne: 812.27 ft
Mean level Lake Manitoba: 812.53 ft
Lake Manitoba desired operating range: 810.5 to 812.5 ft
Lake St. Martin: gauge offline
Lake St. Martin desired operating range: 797.0 to 800.0 ft
Lake Winnipegosis: 832.58 ft
Shellmouth Reservoir: 1402.43 ft

Lake Manitoba update: Sept. 6, 2017

The hydrometric gauges are back online after a prolonged outage. The dry weather continues and levels and flows continue to fall. Lake Manitoba has fallen to 812.66 feet and is now approaching the top end of its operating range (812.5 feet). Outflow at Fairford has fallen with the lake level, currently registering 8,935 cfs. Lake Winnipegosis fell to 833.23 feet and flow on the Waterhen River is down to 8,476 cfs. Lake St. Martin fell further this week and now sits at 802.56 feet. Flow on the Assiniboine is  533 cfs at Holland; there is an odd gauge reading at Headingly (1,031 cfs). That may be a gauge error

River update
Time: 7:30 AM September 6, 2017
Portage Diversion: closed
Assiniboine at Holland: 533 cfs
Assiniboine at Headingly: 1,031 cfs
Waterhen: 8,476 cfs
Whitemud: gauge offline
Fairford: 8,935 cfs
 
Lake update
Time: 7:30 AM September 6, 2017
Steep Rock: 812.50 ft
Westbourne: 812.83 ft
Mean level Lake Manitoba: 812.66 ft
Lake Manitoba desired operating range: 810.5 to 812.5 ft
Lake St. Martin: 802.56 ft
Lake St. Martin desired operating range: 797.0 to 800.0 ft
Lake Winnipegosis: 833.23 ft
Shellmouth Reservoir: 1402.53 ft

High Wind Warning Issued: Wave heights of 5 feet or more

Manitoba Infrastructure’s Hydrologic Forecasting Centre reports that forecast high winds developing over the next 24 hours to 48 hours have resulted in a high wind warning effect for the South Basin of Lake Manitoba and Lake Winnipeg.

Strong northwest winds are forecast starting tomorrow afternoon. Wind speed and wave action could raise levels by as much as five feet or more. Lake Manitoba is currently at 812.80 ft.

Property owners are advised to take precautions. 

Click here to read province issued warning

Click here to read CBC article