Manitoba Water Stewardship

Environment Canada predicts that some showers may occur on Friday. Precipitation amounts should be near 5 mm where showers develop.

A FLOOD WATCH CONTINUES FOR THE ASSINIBOINE RIVER FROM SHELLMOUTH TO MILLWOOD.

A flood watch continues for the Assiniboine River from Shellmouth Dam to Millwood.

Outflows from Shellmouth Reservoir continue to be near 1700 cfs. The reservoir level declined slightly to 1410.35 feet this morning due to calm conditions versus yesterdays moderate north winds. The conduit flow was temporarily reduced to 100 cfs yesterday to as winds were driving more water over the spillway, and were increased to 200 cfs at 10:30 this morning due to the calm winds.

The reservoir is presently near its crest and additional rises will be primarily due to wind. Levels will continue to fluctuate as winds change.

The reservoir inflow has declined to 1970 cfs today. It should be possible to control the peak outflow to 1700 cfs unless strong north winds develop during the next five days or if heavy rain develops in the next few weeks.

Levels of the Assiniboine River from St. Lazare to Brandon are declining slowly as flows on the Qu’Appelle River and other tributaries downstream of Shellmouth Dam decline. Levels continue to be near bankfull from Shellmouth Dam to Millwood but are well below bankfull at points further downstream.

Red Deer Lake:

An updated levels is nor available but it is estimated that the lake has declined 0.3 feet during the past few days and is now three-quarters of a foot below the crest observed a week ago. Levels will decline progressively faster based on favourable weather.

Lake Winnipegosis:

The level of Lake Winnipegosis is high and still rising. The lake is expected to crest in late May at an elevation slightly lower than that of last year. Some flooding of low lying lands near the lake is likely during days with strong onshore winds

Carrot River—Saskatchewan Boundary to 14 miles west of The Pas :

Levels of the Carrot River are beginning to decline a little faster and this trend will continue unless heavy rain develops. Flooding some fields near the river from the Saskatchewan boundary about 14 miles west of The Pas should end by early next week.

Saskatchewan and Carrot Rivers at The Pas

River levels at the Pas have risen slightly during the past few days due to increased outflows from Tobin Lake in eastern Saskatchewan last weekend. Levels at the Pas are expected to change little for another 10 days to two weeks. This will prevent natural drainage from the Pasquia area just southwest of The Pas and will require pumping by Manitoba Water Stewardship and MIT staff to continue. However the upstream portions of the Pasquia area are now free of flooding and pumping is now limited to portions closer to the Saskatchewan River.

A flood sheet for the Swan River area is not available for today.