Manitoba
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Infrastructure and Transportation

Lake Metigoshe

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Lakes Info.

Overview

The Forecasting and Flood Response Coordination Branch of Regulatory and Operational Services, Manitoba Infrastructure and Transportation, monitors and reports on lake levels throughout Manitoba. A provincial network of electronic and manual gauges is operated to supplement the federal network run by Water Survey of Canada. Manitoba Infrastructure and Transportation and Manitoba Conservation operate some additional manual gauges and provide weekly or monthly readings. Forecast of lake levels are also prepared every month or two depending on conditions.

The following products showing lake conditions and forecasts are available via this website:

  • Weekly updated plots for large lakes in Manitoba, showing daily levels for the past two years together with target levels and/or operating ranges. Occasionally these plots will show predicted levels for several months into the future based on normal weather conditions. Inflows and outflows are shown for controlled lakes.
  • Monthly updated tables showing recent levels for 35 lakes in Manitoba together with target levels, comparative data for past years and forecasted levels for one month into the future.
  • Daily recorded water levels for many lakes may be obtained from a Water Survey of Canada web site as noted under the "River Conditions" portion of this web site.

Monthly Lake Reports and Tables

Lake Levels

Structure Operations

Dam Year List of Operations
Shellmouth 2011 Shellmouth Operations 2011
Shellmouth 2012 Shellmouth Operations 2012
Shellmouth 2013 Shellmouth Operations 2013

Lake Forecasts

Flood Forecast Maps


Lake Pineimuta Flood Forecast Map

The map below is based on a lake level of 807.5 feet above sea level and a sustained wind of 60 km/hr. Note: Wind can cause water levels to rise and increase the extent of flooding. This map is based on historical information and does not show current conditions and should not be used to plan flood responses. The map also does not illustrate the wave uprush that individual properties may experience.

Lake Pineimuta

Dauphin Lake Flood Forecast Maps

The maps below are based on a lake level of 861.2 feet above sea level and a sustained wind of 60 km/hr. Note: Wind can cause water levels to rise and increase the extent of flooding. These maps are based on historical information and do not show current conditions and should not be used to plan flood responses. These maps also do not illustrate the wave uprush that individual properties may experience.

Dauphin Lake Overview Lawrence North Lawrence South Mossey River
Dauphin North Dauphin South Ste. Rose Ochre River
Wave Uprush

Waves heights and the amount of water uprush varies depending on various factors like the characteristics of the shoreline and on what vegetation or buildings may be near the water's edge. During high winds, dikes and individual properties will be impacted by wave action to varying degrees, depending on the local conditions. Some of the factors that change the way wind and waves affect properties and dikes include:

  • the slope of the shore
  • the distance from the water
  • obstructions that may buffer waves, such as roads and vegetation
  • the slope and height of flood protection dikes
  • the depth of standing water against the dikes

Wave uprush is not illustrated on the inundation maps because its effects vary so much and are specific to each property.

Waves will generally be higher and have more force if the beach is shorter and has a steeper slope. Waves at dikes or buildings will generally be lower and have less force if the dikes or buildings are located far from the normal lake edge, have a gently sloping beach or the waves are travelling over flooded vegetation or other obstructions. Homes with a gently sloping beach could experience waves about three feet high.

The impact of waves on dikes is dependent on the depth of standing water against the dike and the slope of the dike.

With a sustained 60 km/hr onshore wind:

  • Sandbag dikes close to the water's edge may experience waves about three feet high.
  • Sandbag dikes with water reaching the base of dike may experience waves about four feet high.
  • Sandbag dikes with water reaching part way up the dike are likely to experience waves about seven feet high.
  • Clay dikes are generally built with a gentler (5:1) slope when compared to the slope of sandbag dikes (1:2), reducing the strength of the wave and reducing wave height.

Dauphin Wave Uprush Diagram

Lake Winnipeg Flood Forecast Maps

The maps below are based on a forecasted lake level of 717 feet above sea level. Each region shows how a water level of with a 60 km/hour wind sustained for 12 hours may affect your area. Note: Wind can cause water levels to rise and increase the extent of flooding. All maps are based on historical information and do not show current conditions and should not be used to plan flood responses. The maps also do not illustrate the wave uprush that individual properties may experience.

Overview Alexander and Victoria Beach
Bifrost Gimli
St.Andrews St. Clements

Lake Manitoba Flood Forecast Maps

The maps below are based on a lake level of 817 above sea level and are separated into the South and North basins. Each region shows how a water level of 817 feet without wind and with a 60 km/hour wind may affect your area. Note: Wind can cause water levels to rise and increase the extent of flooding. All maps are based on historical information and do not show current conditions and should not be used to plan flood responses. The maps also do not illustrate the wave uprush that individual properties may experience.

Overview - General Flooded Area and Wind Setup Zones

South Basin (water level of 817 and sustained wind of 60km/hr)
Alonsa (South) Portage la Prairie Woodlands
Coldwell Sandy Bay First Nation
Lake Manitoba First Nation St. Laurent
Eriksdale Siglunes
Lakeview Westbourne
North Basin (water level of 817 and sustained wind of 60km/hr)
Overview Lawrence
Alonsa (North) Crane River First Nation
Ebb and Flow First Nation
Grahamdale Siglunes
Unorganized Territory Lake St. Martin

Wave Uprush

Waves heights and the amount of water uprush varies depending on various factors like the characteristics of the shoreline and on what vegetation or buildings may be near the water's edge. During high winds, dikes and individual properties will be impacted by wave action to varying degrees, depending on the local conditions. Some of the factors that change the way wind and waves affect properties and dikes include:

  • the slope of the shore
  • the distance from the water
  • obstructions that may buffer waves, such as roads and vegetation
  • the slope and height of flood protection dikes
  • the depth of standing water against the dikes

Wave uprush is not illustrated on the inundation maps because its effects vary so much and are specific to each property.

Waves will generally be higher and have more force if the beach is shorter and has a steeper slope. Waves at dikes or buildings will generally be lower and have less force if the dikes or buildings are located far from the normal lake edge, have a gently sloping beach or the waves are travelling over flooded vegetation or other obstructions. Homes with a gently sloping beach could experience waves about three feet high.

The impact of waves on dikes is dependent on the depth of standing water against the dike and the slope of the dike.

With a sustained 60 km/hr onshore wind:

  • Sandbag dikes close to the water's edge may experience waves about three feet high.
  • Sandbag dikes with water reaching the base of dike may experience waves about four feet high.
  • Sandbag dikes with water reaching part way up the dike are likely to experience waves about seven feet high.
  • Clay dikes are generally built with a gentler (5:1) slope when compared to the slope of sandbag dikes (1:2), reducing the strength of the wave and reducing wave height.

Lake Manitoba Wave Uprush Diagram

Wind Alerts - Current Condition and Forecast


Due to solid ice formation, please be advised that daily wind alerts have now been discontinued for all lakes.