Manitoba Water Stewardship

Rainfall in southern Manitoba and eastern Saskatchewan during the 24 hour period ending this morning has been 5 mm or less in most areas although Regina reported 12 mm. Some additional showers are expected today but rainfall amounts should be again be light. Environment Canada predicts little or no rain from tomorrow to Friday.

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 rose to 1410.35 feet this morning due to strong north winds. The conduit flow was temporarily reduced to zero at 9:30 a.m. to offset the spillway flow of near 1700 cfs. The conduit flow was to be increased at 10:30 due to reduced winds, but this was not possible due to a power outage. The flow was increased to 150 cfs at 1:10 p.m. and will likely be increased a little more this afternoon as winds become light.

The reservoir inflow is 2250 cfs today and continues to decline, albeit a little more slowly. It should be possible to control the peak outflow to about 1700 cfs unless north winds develop later this week or if heavy rain develops in the next few weeks.

Levels of the Assiniboine River from St. Lazare to Brandon are expected to change little during the next 10 days unless significant rain develops. Levels are near bankfull from Shellmouth Dam to Millwood but continue to be well below bankfull at points further downstream.

Red Deer Lake:

The level of Red Deer Lake has declined 0.2 feet since last Friday and should soon decline a little 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 continue to decline very slowly but more significant declines in eastern Saskatchewan should arrive in Manitoba later this week. Flooding some fields near the river from the Saskatchewan boundary about 14 miles west of The Pas will continue until the end of this week.

Saskatchewan and Carrot Rivers at The Pas

River levels at the Pas have declined slightly during the past few days. Levels will continue to be high for a few more weeks. Outflows from Tobin Lake in Saskatchewan were increased over the weekend as the crest from Alberta has now reached the Lake. The continued high river levels at The Pas 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.

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