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| Surface Water Information Flood Forecasting Reports |
Flood Report for Manitoba
June 19th, 2007
Rainfall during the 24 hour period ending this morning was relatively light but local downpours produce 10 mm in some areas including the upper Assiniboine watershed. Amounts of 15-25 mm were recorded in portions of the Duck with up t0 50 mm in the Porcupine Mountain. Some areas of the Whiteshell and Nopiming Park received an additional 10-15 mm. There was little rainfall in the U. S. portion of the Red River watershed.
Weather forecasts from both Canada and the United States weather agencies indicate that little rainfall is expected for the rest of this week, with the exception of areas north of a line from Dauphin to Winnipeg to Falcon Lake, were some showers are likely today and tomorrow.
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.
Predicted crests for the Red River in Manitoba have been raised by 1-2 feet due to additional information on runoff conditions and forecasts issued for the U.S. portion, as obtained from the U.S. National Weather Service. With the update, additional expected rises in Manitoba range from 10 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 St. Jean area where some flooding of agricultural lands near the river is expected. This forecast is based on normal weather conditions from now on.
The river rose less than half a foot at most Manitoba points during the past 24 hours but will begin to rise somewhat faster later this week.
The river level in downtown Winnipeg this morning was 11.88 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 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 rose somewhat overnight due to strong north winds. The reservoir water level this morning was 1410.70 feet with a spillway flow to 2070 cfs. The level and outflow flow is expected to decline very slowly from now on. 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 while flows at Kamsack will be relatively steady. With dry weather expected Wednesday to 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 15 mm occurred in the Duck Mountain area during the 24 hour period ending this morning and portions of the Porcupine Mountain received up to 50 mm. Streams in the Garland and Ethelbert areas are particularly high with localized flooding. Regional MIT staff report that there is much water on fields in areas northwest of Dauphin.
Strong winds on Lake Winnipegosis yesterday resulted in a two foot rise in levels of the lake near Meadow Portage and Steep Rock. Flooding of low lying lands near the lake has been reported. The lake is presently at its highest level since the mid 1950’s. Additional shoreline flooding is likely to 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.