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| Surface Water Information Flood Forecasting Reports |
Flood Report for Manitoba
May 21st, 2007
Rainfall has been generally less than 5 mm up to this morning. Additional rain fall is expected later today and Tuesday. Amounts could range from 15-30 mm in the Manitoba portion but should be only 5-10 mm in the Saskatchewan portion. Winds at Shellmouth Reservoir are expected to shift from light easterly to moderate northerly late tonight or early tomorrow and continue at moderate northerly on Wednesday.
A FLOOD WATCH CONTINUES FOR THE ASSINIBOINE RIVER FROM SHELLMOUTH TO MILLWOOD.
The water level of Shellmouth Reservoir has changed very little in the past 48 hours and stood at1410.26 feet this morning. The total outflow was 1650 cfs this morning of which 250 cfs was flowing through the conduit. The inflow continues to decline and stood at 1520 cfs this morning. The reservoir is expected to rise to 1410.4 feet Tuesday to Wednesday due to rain and moderate north winds. The conduit flow will be reduced this evening and/or tomorrow morning in order to keep the total outflow from exceeding 1700 cfs.
If rainfall in the reservoir area today and Tuesday exceeds 20 mm or if strong north winds develop, the peak reservoir level and outflow during the next two days may be a little higher than indicated above.
A flood sheet for the Assiniboine River is attached.
Red Deer Lake:
Levels are declining a little faster day by day, but rainfall this weekend may slow down the decline. Minor rises are possible if rainfall this weekend exceeds 20 mm, but levels should stay well below previous crests.
A flood sheet for the Swan River area is not available for today.
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