Flood Bulletin #8
Flood Response
Partial ring dike closures are underway or nearing completion at Ste. Agathe, St. Adolphe and Gretna. As a result of the partial closure at St. Adolphe, PR 200 is closed (local traffic only) from Courchaine Road to St. Adolphe. Tomorrow a partial closure of the ring dike will begin at St. Jean Baptiste.
PTH 75 continues to be monitored. Partial closure of the highway north of Morris may be required late Monday evening or Tuesday.
Approximately 50 homes in the Petersfield area have voluntarily evacuated. Sandbagging and flood barrier tubes are being put in place to protect homes. No homes have been flooded in this area. Flooding is a result of an ice jam north of Netley Creek.
Families who had evacuated from the RM of St. Andrews on Friday are returning home as water is off the road and there is now access to their properties.
The RM of West St. Paul will complete an earthen dike on Baldock Street by sometime tomorrow. It has set up 47 flood tubes and is running pumps to keep homes and property safe.
The Office of the Fire Commissioner (OFC) has stationed water-rescue teams and equipment north of Winnipeg for municipalities or local authorities that require assistance managing rising water levels.
Overland flooding and frozen ditches are causing some problems in the RM of St. Laurent. The RM is constructing temporary sandbag dikes and using equipment to remove ice and snow from ditches. Pumps are also being used around some homes.
Six bridges have been damaged by ice or debris along Elm, Tourond and Dead Horse creeks. Local traffic still has alternate routes available in these areas.
The setting up of larger flood barrier tubes in the Vita area continues to provide a second line of defence.
An earthen dike is nearly completed at the Little Saskatchewan First Nation on Lake St. Martin and the dike at Lake St. Martin First Nation is complete.
Work will begin on a dike at the Sioux Valley First Nation on the Assiniboine River.
Four Flood Liaison Offices are open to provide flood information to local residents and municipalities from 7 a.m. to 7 p.m. seven days a week. The offices are at:
- Arborg: 1-204-376-3360
- Brandon: 1-204-729-1220
- Morris: 1-204-712-6219
- Winnipeg: 1-204-945-8373
Google earth data on Manitoba’s road conditions is available at: http://roaddata.gov.mb.ca/map/gearth/kmz/manitobahighwayconditions_e_kmz.kmz
Forecast Summary
The Red River at Fargo is cresting today, reaching a peak of 38.75 ft.
The Red River Floodway is in operation. In the next few days, water levels will affect access on some municipal roads in the area south of the floodway.
A high-water advisory has been issued for the lower Pembina River.
The high-water advisory for the Souris River near Melita remains in effect.
Weather and Effect on River Conditions
Warmer temperatures will result in sustained snowmelt run-off and river level rises.
Red River and Floodway Operations
The main stem of the Red River from Emerson to south of St. Adolphe has generally risen just over 0.15 metre (0.5 feet.) since yesterday’s readings. Flows on the Red River at Emerson are 36,000 cubic feet per second (cfs).
Water levels at the floodway inlet have risen approximately 0.3 to 0.6 m (one to two ft.) Flow rates in the Red River above the floodway are approximately 62,500 cfs with an upstream elevation of 231.2 m (758.52 ft.). The floodway is now in operation. Flows in the floodway are at approximately 15,000 cfs.
Several locations along the Red River in the U.S. are either at bank-full levels or have overtopped riverbanks. The Red River in Manitoba is close to bank-full conditions in Emerson, Letellier and Morris with eroding banks in some locations. The river is above bank-full levels in the St. Jean Baptiste area. The river levels remain well below top-dike elevations.
The Red River between Winnipeg to Selkirk now has open water. Ice jams two kilometres north of Netley Creek on the Red River are affecting Netley Creek water levels. Ice conditions will be monitored closely.
Water Levels along the Red River
|
Station Location |
Elevation (ft.)1 |
Change from Yesterday |
Projected Crest Elevation (ft.) |
Project Crest Date |
|
Fargo |
38.56 |
-0.15 |
39.5-40 |
April 10-11 |
|
Drayton |
38.31 |
+0.65 |
|
|
|
Grand Forks |
44.54 |
+1.46 |
|
April 13-14 |
|
Emerson |
783.43 |
+0.60 |
791-792.3 |
April 23-26 |
|
Letellier |
780.00 |
+0.34 |
786-786.5 |
April 23-26 |
|
St. Jean Baptiste |
775.68 |
+0.52 |
783-784.1 |
April 24-29 |
|
Morris |
772.42 |
+0.59 |
782-783.2 |
April 20-May 5 |
|
Ste. Agathe |
765.33 |
+0.79 |
775-776.2 |
April 26-May 6 |
|
St. Adolphe |
761.64 |
+1.34 |
771-772.4 |
April 27-May 7 |
|
Above Floodway |
758.52 |
+1.83 |
767-768.6 |
April 29-May 05 |
|
James Ave in Winnipeg |
20.26(reported in feet above winter ice level) |
-0.35 |
21-24 |
April 29-May 05 |
|
Selkirk (at dock) |
723.23 |
-2.17 |
|
|
|
Breezy Point |
719.16 |
-0.49 |
|
|
1Elevations read at approximately 9 a.m., April 10, 2011
Assiniboine River
Tributaries in the Assiniboine River basin are responding to recent precipitation with an approximate 0.15 m (0.5 ft.) rise observed at both Brandon and Holland since yesterday. The Assiniboine River remains within banks at all locations at this time.
Shellmouth Reservoir inflow is 700 cfs and outflow is 400 cfs with a reservoir elevation of 421.8 m (1,384 ft.).
Flows in the Portage Diversion channel are 4,488 cfs and flows on the Assiniboine River downstream of the diversion are 3,036 cfs.
Pembina River
Significant run-off has started in the Pembina River system with a rise of 1.9 m (6.1 ft.) at Neche, N.D. and arise of 0.6 m (1.9 ft.) in Walhalla, N.D. River levels are reaching bank-full conditions at several locations in Manitoba. Water levels have risen on the Pembina River downstream of Rock Lake by 0.15 m (0.5 ft.) since yesterday and are above bank-full levels. The outlet structure at Pelican Lake is closed.
Souris River
Water levels on the Souris River at Melita have risen by 0.2 m (0.5 ft.) since yesterday and is overbank. Water levels have increased by over 0.5 m (1.5 ft.) at Souris since yesterday.
Weather conditions and their impacts on the Souris River basin will be monitored closely over the next few days.
Interlake Region
The Fisher River remains relatively stable, rising by less than 0.15 m (0.5 ft.) since yesterday.
The Icelandic River has increased 0.6 to 0.8 m (two to 2.5 ft.) since yesterday, however, water levels are still low.
Other Major Waterways
Run-off on the Brokenhead and La Salle Rivers is well underway and flows are increasing.
The Saskatchewan River has seen minimal rises of less than 0.06 m (0.2 ft.) in the last 24 hours.
Water levels on the Whitemud River system have remained relatively stable, with an increase of 0.5 m (1.75 ft.) at Westbourne since yesterday.
Water levels on the Roseau River have increased by approximately 0.15 m (0.5 ft.) since yesterday.
Water Levels at other Major Waterways and Water Bodies
|
Station Location |
Elevation (ft.) |
Change from Yesterday |
|
Pembina River at Pelican Lake |
Not available |
|
|
Pembina River at La Rivière |
1,290.60 |
level |
|
Whitemud River at Keyes |
947.95 |
+1.28 |
|
Lake Manitoba at Westbourne |
813.05 |
+0.06 |
|
Shoal Lakes2 |
859.50 |
monitored weekly at this time |
|
Lake Winnipeg at Gimli |
714.70 |
-0.02 |
1Elevations read at approximately 8 a.m., April 10, 2011
2Elevations read on April 7, 2011
For more information, see www.manitoba.ca/floodingand find the most up-to-date highway information at www.gov.mb.ca/mit/roadinfo.
- 30 -
Après la publication de chaque rapport sur les inondations, les renseignements sont mis à jour en français dès que possible.
Pour les consulter, allez à: www.gov.mb.ca/waterstewardship/floodinfo/forecasts_reports.htmlpuis cliquez sur
« Daily Flood Reports ».