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| Surface Water Information Flood Forecasting Reports |
Flood Report for Manitoba
June 20th, 2007
Thundershowers produced about 10-15 mm of rain north of a line through Roblin, Portage la Prairie and Vita late yesterday. The northern edge of the rain was from Swan River to Arborg to Bird Lake. About 10 mm of rain also fell in the upper Assiniboine watershed, not including the Whitesand basin. Most other areas received little or rain yesterday.
Weather forecasts from both Canada and the United States weather agencies cal for little rain for the rest of this week. However there is a risk of rain again for Sunday-Monday.
A HIGH WATER LEVEL ADVISORY CONTINUES FOR WHITESHELL AND NOPIMING PROVINCIAL PARKS
HIGH WATER LEVEL ADVISORY CONTINUES FOR THE ASSINIBOINE RIVER FROM SHELLMOUTH TO MILLWOOD.
A HIGH WATER LEVEL ADVISORY CONTINUES FOR THE RED RIVER.
Eastern Manitoba:
A high water advisory remains in effect for Whiteshell and Nopiming Parks. The level of Bird Lake continues to be extremely high but appears to have declined by nearly one foot from the crest reached two weeks ago. A continued gradual decline is expected based on present weather forecasts.
Lakes in the Whiteshell are well above desirable levels and have risen slightly further due to 25-50 mm of rain last weekend. The high levels are flooding boathouses, docks and beaches with some damages developing. Logs have been removed from most dams in the Whiteshell. There is little further that can be done in terms of dam operations. Problems due to high lake levels are likely to persist into early July even if the wet spell ends soon.
Lakes along the Winnipeg River are at near normal levels. Lake Of The Woods still remains below its average level for this time of year.
Red River Watershed:
A high water level advisory continues for the Red River.
The river rose close to a foot at Emerson and nearly half a foot in the Winnipeg area during the 24 hour period ending this morning.
The rate of rise will increase somewhat during the next five days as the crest approaches from the United States. The crest of the river is presently at Halstad, which is located between Faro and Grand Forks.
Predicted crests for the Red River in Manitoba remain unchanged today. Additional expected rises in Manitoba range from 9 feet at Emerson to 6 feet at the Floodway Inlet to 3.5 feet at Winnipeg and Selkirk. The river is expected to crest at Grand Forks on June 22, at Emerson June 30 and in the Winnipeg area July 3. The river will still be within its banks at the crest with the exception of the portion from St. Jean to Letellier area where some flooding of agricultural lands near the river is expected. This forecast is based on normal weather conditions from now on. Crests for this event should still be well below those of the record summer flood of 2005.
The river level in downtown Winnipeg this morning was 12.27 feet and is expected to crest between 15 and 16 feet based on normal weather conditions from now on. The normal summer level is 6.3 feet. A minor amount of water may flow into the Red River Floodway near the time of the crest.
A flood sheet for the Red River is attached.
Assiniboine River:
A high water level advisory continues for the Assiniboine River from Shellmouth Dam to Millwood.
The Shellmouth Reservoir level and outflow decreased overnight as north winds subsided. The reservoir water level this morning was 1410.60 feet with a spillway flow to 1900 cfs. The level and outflow flow is expected to decline very slowly from now on based on normal weather conditions. The inflow is expected to remain quite steady for the next 5 days due to the effect of recent rains. Flows on the Shell River are expected to rise slowly for another week or so while flows at Kamsack will be relatively steady for the next 5 days. With dry weather expected until Saturday, water levels should begin a more significant decline next week. Saskatchewan Water Authority continues to restrict outflows from Good Spirit Lake to reduce flows at Kamsack.
There has been no flow through the conduit since 10 a.m. June 7. The reservoir inflow is presently near 1700 cfs.
A flood sheet for the Assiniboine River is attached.
Northwest:
Additional rainfall of 10-15 mm occurred in the Duck Mountain and Dauphin area during the 24 hour period ending this morning. Streams in this region are running high. Regional MIT staff report that there is much water on fields in areas northwest of Dauphin.
Strong north winds over Lake Winnipegosis, which caused of agricultural lands near Meadow Portage and Winnipegosis overnight from Monday to Tuesday, have subsided and levels have declined. The lake is presently at its highest level since the mid 1950’s. Additional shoreline flooding could occur in low areas if strong winds develop during the next six weeks.
The level of Red Deer Lake remains very high but continues to decline.
Water levels remain very high in the Saskeram area west-northwest of The Pas. While no homes are flooded, there are continued difficulties with cattle due to flooded pastures.