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| Surface Water Information Flood Forecasting Reports |
Flood Report for Manitoba
June 11th, 2007
Some areas of southeastern Manitoba received 10-30 mm of rain yesterday as thunderstorms moved through the area during the afternoon. The heaviest rain fell east of the Red River and over the Whiteshell and southern Nopiming Park.
Additional heavy rain is likely during in many areas of southern Manitoba during the next few days.
A HIGH WATER LEVEL ADVISORY CONTINUES FOR WHITESHELL AND NOPIMING PROVINCIAL PARKS
HIGH WATER LEVEL ADVISORIES CONTINUE FOR THE ASSINIBOINE RIVER FROM SHELLMOUTH TO MILLWOOD AND FOR THE RED RIVER
Eastern Manitoba:
A high water advisory remains in effect for Whiteshell and Nopiming Parks. Water levels continue to rise slowly due to frequent storms, the latest of which produced 20-30 mm in most areas yesterday afternoon. The level of Bird Lake appears to have risen to the previous record high set in May 1974. Some cottages are flooded and some boats are being damaged due to being trapped in boathouses due to the high levels. The exact level of Bird Lake is not known due to the gauging station being flooded as of last Saturday. The lake is expected to rise a further quarter foot or so before it crests late this week, although additional heavy precipitation could produce even further rises. Lakes in the Whiteshell are generally above desirable levels, except those on the Winnipeg River which are near or somewhat below normal levels. Lake Of The Woods has risen 0.6 feet since mid May but remains nearly one foot below its average level for this time of year. Logs have been removed from most dams in the Whiteshell. The dam at West Hawk Lake has not been opened due to high levels on Caddy Lake into which it empties.
Red River Watershed:
The Red River continues to rise from Grand Forks northward and is expected to rise about 3 feet further in the Manitoba portion. Crests are expected at Emerson on June 18 and at Winnipeg June 21-22. This forecast is based largely on crests predicted by the U.S. National Weather Service for the U.S. portion. The crest in downtown Winnipeg should be near 11 feet above datum based on normal weather conditions from now on. The level in downtown Winnipeg was near 9 feet this morning, considerably above the normal summer level of 6.3 feet. Environment Canada has indicated that heavy rain is possible for the next few days. If this occurs over much of the watershed, levels may rise significantly higher than presently predicted. A table showing conditions and forecasts for the Red River is attached.
A flood sheet for the Red River is attached.
Assiniboine River:
The Shellmouth Reservoir remained virtually unchanged over the weekend and stood at 1410.69 feet this morning. There has been no flow through the conduit since 10 a.m. last Thursday. The spillway flow this morning was 2070 cfs. The reservoir inflow continues to decline slowly and was below 2060 cfs this morning.
Little change in reservoir water levels and outflows is expected for the next 2-3 days after which they should begin a steady decline based on favourable weather. The weather forecast is not favourable with a high probability of showers and thundershowers tonight and tomorrow.
A high water level advisory continues for the Assiniboine River from Shellmouth Dam to Millwood. The river level in this area has changed little in recent days but should soon begin to gradually subside unless heavy rain develops. Conditions and forecasts are shown on the attached table.
A flood sheet for the Assiniboine River is attached.
Northwest:
The level of Red Deer Lake remains very high but has declined about one-third of a foot from the crest observed early last week.
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.