The following report provides the latest water levels for each of the Great Lakes. This data is sourced from the coordinated Great Lakes water level monitoring network.

The Army Corps of Engineers has released its latest update on Great Lakes water levels, providing a detailed look at current conditions and projections. Here are the key takeaways from this week’s report:

Weather Conditions

The region experienced a cold snap last week, with temperatures climbing back to seasonal averages by mid-week. Despite minimal snowfall, the coming days are forecasted to be warmer, with highs nearing 40°F in southern Michigan. Rocky Mountain high-pressure systems are expected to maintain cooler weather across the northern parts of the Great Lakes region.

Current Lake Levels

As of January 31, 2025:

Lakes Superior and Michigan-Huron: Currently below their monthly averages by 3 and 9 inches, respectively. These levels are also below January 2024 readings by 5 and 11 inches.
Lake St. Clair: Levels are up 5 inches from the chart datum but remain 4 inches below last year’s January levels.
Lake Erie: Water levels are above long-term averages by 2 inches, showing a 14-inch decline from last year’s January levels.
Lake Ontario: Levels are near their long-term average, standing 9 inches below last year’s January levels.

Projections for the next month suggest slight declines for Lakes Superior and Michigan-Huron, while Lake Erie and Ontario are expected to rise modestly.

Channel Flows and Outflows

Outflows through key waterways, including the St. Clair and Detroit Rivers, are expected to remain at or above average for January. Lake Ontario’s outflow through the St. Lawrence River is also projected to maintain slightly above-average rates.

Alerts for Mariners

The report advises mariners and those engaged in winter waterway activities to stay informed of water level conditions. Fluctuations caused by weather can impact surface conditions across the lakes.

Forecast Highlights

By March 3, 2025, levels on Lakes Superior and Michigan-Huron are expected to decline by 2 and 1 inches, respectively.
Lake Erie and Lake Ontario are projected to rise by 4 and 2 inches, respectively.

For more detailed information, visit the Detroit District Great Lakes Homepage or the Great Lakes Information Network.