Water Level Trends 2025
The Great Lakes are experiencing a natural, seasonal decline in water levels, with predictions showing all lakes, except Lake Erie, falling below last year’s levels through July, and this winter’s pronounced evaporation is contributing to the decline. With lower water levels there may not be enough pier to get adequate depth. Extra pier sections and extra work setting boat lifts might be required.
Cana Island Causeway 2013
Cana Island Causeway 2019
Seasonal Decline:
The Great Lakes naturally experience a seasonal decline in water levels during the winter months, a trend that begins in the fall.
Factors Contributing to Decline:
- Evaporation: This winter’s pronounced evaporation, caused by cold air moving over relatively warm water, is a key factor in the decline.
- Drought: Drought conditions have accelerated the water level decline at some of the lakes.
- Warmer surface water temperatures: in the Great Lakes have contributed to lower water levels by increasing rates of evaporation and causing lake ice to form later than usual.
Current Situation:
Water levels in all five Great Lakes are currently below 2023-2024 levels.
Specific Lake Predictions:
- Lake Superior, Michigan, and Huron: Expected to decrease by 6 inches.
- Lake Ontario: Expected to drop by 8 inches.
- Lake Erie: Expected to stay close to long-term averages.
US Army Corps of Engineers Great Lakes Water Forecast
Long-Term Perspective:
While water levels are dropping, all the lakes are expected to remain well above record lows.
Winter Ice Cover:
The Great Lakes have lost an average of about 1.5 days of ice cover per year since 1995.
Winter Season Shrinking:
A study found that winters in the Great Lakes region have shrunk by two weeks since 1995.
US Army Corps of Engineers Great Lakes Water Data
Stay informed about changing water levels. Pier & Waterfront Solutions will help you manage low water level challenges.
