 |
Province of Manitoba » Water Stewardship » Water Information » Flood Forecasting Reports »
Flood Report for Southern Manitoba - May 04, 2006
Water Information
FLOOD UPDATE FOR MANITOBA
May
04, 2006.
Flood sheets
showing present conditions and an updated forecast for:
Red River,
Assiniboine River and
Swan River - The
Pas Area are attached.
Weather
-
Some additional rain or
snow fell in Manitoba yesterday afternoon and evening but amounts were quite
light and won’t add significantly to river or lake levels. The heavy rain in
the Assiniboine watershed from Shellmouth to St. Lazare Tuesday night is
adding to river rises in the upper Assiniboine.
-
The weather outlook is
quite favourable with little or no precipitation expected in Manitoba from now
through Monday.
Red River
-
Levels of the Red River
declined 1.0 to 1.6 feet from Emerson to the Floodway Inlet during the 24 hour
period ending this morning. Strong declines are expected to continue unless
heavy rain develops.
-
The Red River is now back
within its banks with the exception of an area east of Letellier where some
agricultural flooding will continue until early next week.
-
The Red River level in
downtown Winnipeg this morning was 16.1 feet, a decline of half a foot since
yesterday. The level is expected to decline to 10 feet by the middle of May
with favourable weather. The natural level in downtown Winnipeg today without
operation of flood control works would have been 20.9 feet and the peak this
spring would have been near 28 feet.
-
The flow in the Red River
Floodway this morning was 8800 cubic feet per second (cfs) while the flow
upstream of the floodway inlet was 49,770 cfs.
Assiniboine River
-
The water level in
Shellmouth Reservoir this morning was 1412.38 feet, which is 3.88 feet above
the spillway elevation. The reservoir inflow was 4800 cfs, a decline of 1200
cfs from yesterday morning’s high inflow due to rain on the reservoir. The
total outflow was 5200 cfs, all of which was going over the spillway. The
reservoir level crested yesterday afternoon at 1412.5 feet with an outflow of
5500 cfs due to a strong north wind.
-
Flooding of valley lands
continues from Shellmouth Dam to Grand Valley west of Brandon. A crest is
expected in the Russell area late today, at Miniota May 8 and at Brandon May
13. Flooding in the Assiniboine Valley should end May 17-23 depending on
location, based on favourable weather conditions from now on.
-
Minor flooding may occur at
Curren Park in Brandon late next week. Locations east of Brandon to Winnipeg
will experience only minor rises with the river remaining well within its
banks.
-
The flow in the Portage
Diversion this morning was 3820 cfs while the inflow to Portage Reservoir was
near 8915 cfs. It is expected that flows in the Portage la Prairie area will
change little in the next few weeks based on normal weather conditions.
Pembina River
Souris River
Carrot River
-
Levels of the Carrot River
have declined very slightly since yesterday. Minor flooding continues in the
portion from the Saskatchewan boundary to 10 miles west of The Pas with one
resident pumping water seeping through a dike around his home. Levels will
subside very slowly for the next few weeks.
-
Flooding of agricultural
lands in the Pasquia River Valley near The Pas continues. Pumping to reduce
water levels continues at maximum capacity.
Red Deer River
-
The level of Red Deer Lake
has declined 1.5 inches in the past two days and has declined about half a
foot since the crest on April 28. The lake is still 2.6 feet higher than the
1979 crest.
-
Manitoba Water Stewardship
regional staff will be measuring the outflow from the Lake in the next few
days. This information will be helpful in forecasting the decline of the Lake.
At the present time it appears that it will be at least three weeks before
levels at the Community of Red Deer Lake decline sufficiently for the clean-up
to commence. Residents of the community will need to remain relocated in the
interim.
Hydrologic Forecast Centre,
Water Branch,
Manitoba Water Stewardship
-- top --
|
