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  Forecasted Great Lakes-St. Lawrence Water Levels
What's New | General Resources | Related Resources
Levels Section: Current | Forecasted | Historical
Levels & Hydrology Section: Home | Levels | Hydrology | Flows

What's New
Six-month water level predictions illustrate Great Lakes complexity
Great Lakes Echo (11/25)
Recently released Great Lakes water level predictions have Superior, Michigan and Huron on the same page. But Erie and Ontario flow to the beat of a different drum.

Milder temperatures, less snow expected in Great Lakes region this winter
The Oakland Press (11/20)
Water levels in the Great Lakes should remain mostly above average over the next six months as a powerful El Nino gives the region a break after two bitterly cold winters, but it’s unclear whether there will be long-term effects, federal scientists said.

El Niño Could Cause Drastic Ice Changes on the Great Lakes This Winter
The Weather Channel (9/3)
The latest El Niño forecasts could have huge implications on the extent of ice across the Great Lakes this winter.

Forecast calls for drought to persist in much of U.S.
Livingston Daily (2/22)
The nation's worst drought in decades is expected to persist and likely intensify across much of the drought-stricken parts of the Plains, Southwest and Rockies over the next several months, federal scientists announced Thursday.

Report: Great Lakes water levels may flirt with record lows
Detroit Free Press (9/6)
Water levels on Lakes Huron and Michigan could drop to record lows a few months from now should the region be hit with extreme dryness, according to a report by the U.S. Army Corps of Engineers.

Climate change could affect Lake Superior economy
WDIO-TV - Duluth, MN (7/24)
Over the years, data has indicated that the temperature of Lake Superior is rising and water levels are lowering. Now a new study shows this could be a trend that negatively affects the area economy.

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General Resources
Great Lakes Water Levels
NOAA, Great Lakes Environmental Research Laboratory (GLERL)
Includes historical hydrographs illustrating monthly water levels 1860-present, as well as information about the current situation and the year's outlook.

Great Lakes Water Levels Forecast
Department of Fisheries and Oceans (DFO), Canadian Hydrographic Service
Monthly forecasts of the probable range of levels for the coming six months. Period of record is 1918-1995; elevations referenced to IGLD (1985).

Great Lakes, Connecting Channels and St. Lawrence River Water Levels and Depths
U.S. Army Corps of Engineers (USACE), Detroit District
Prepared twice a month, this forecast shows expected lakewide averages for each of the Great Lakes and Lake St. Clair, and expected levels at stations along the St. Marys, St. Clair, Detroit and St. Lawrence rivers. Period of record is 1900-1990; elevations are referenced to IGLD (1985).

Monthly Bulletin of Water Levels for the Great Lakes
U.S. Army Corps of Engineers (USACE), Detroit District
Monthly forecasts of the probable range of levels for the coming six months. Period of record is 1918-1995; elevations referenced to IGLD (1985).

St. Lawrence River Level Bulletin
U.S. Army Corps of Engineers (USACE), Buffalo District
Consists of graphs showing past, present and predicted monthly average water levels at six locations along the St. Lawrence River.

Weekly Forecast of Great Lakes Water Levels
U.S. Army Corps of Engineers (USACE), Detroit District
This update reports the current lakewide average levels for a specific day, compares these to historical levels and chart datum, as well as forecasts the level for one month into the future.

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Related Resources
GLIN: Great Lakes-St. Lawrence Water Flows

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CC Data This page was created under the guidance of the binational Coordinating Committee on Great Lakes Basic Hydraulic and Hydrologic Data. This symbol is used throughout the GLIN hydrology section to indicate data or references prepared under the auspices of the Coordinating Committee.


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Updated: December 11, 2017
Selected Photos: Copyright ©John and Ann Mahan
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