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  Current Lake Superior Conditions
What's New | Great Lakes Observations Explorer | Weather | Water Levels | Water Temperatures
Beaches | Boating Safety/Security Advisories | Fishing Conditions
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What's New
Lake Superior level still above average
Duluth News Tribune (9/2)
Lake Superior remained at about the same level in August, a month the lake usually rises about one-half inch, according to the International Lake Superior Board of Control.

Proposed hog megafarm causes stir in northern Wisconsin
Darien N ews (7/28)
A proposed hog "megafarm" in northern Wisconsin is raising concerns among some residents that millions of gallons of pig manure will eventually wash off the land and pollute Lake Superior.

What European demand for caviar means for a Great Lakes fish
Michigan Radio (7/28)
Scientists say a key fish in Lake Superior’s food web is now in trouble due to mild winters and an appetite for caviar in Europe.

Sitting next to vast Lake Superior, Duluth tells everyone to limit water use
Star Tribune (7/15)
Nestled on the hilly shoreline of one of the world’s largest freshwater lakes, the city of Duluth is asking residents and businesses to conserve water until Thursday night.

Lake Superior pressured by climate change, invasive species
Circle of Blue (7/10)
Warming water temperatures and destructive, non-native species threaten the world’s largest lake by surface area.

Lake Superior 3.5 degrees warmer than last year
WDIO (7/7)
Weather officials say water temperatures in the Great Lakes are higher than at the same time a year ago.

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Great Lakes Observations Explorer

Great Lakes Observations ExplorerClick to view real-time and historic lake conditions; water levels, wave heights, air and water temperatures and more from the station or buoy of your choice.

Developed by the Great Lakes Observing System (GLOS), a regional node of the U.S. Integrated Ocean Observing System (IOOS) initiative.


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Lake Superior Experimental Marine Forecasts
National Weather Service

Lake Superior Marine Weather
National Weather Service

Lake Superior Open Water Text Forecast
National Weather Service

Surface Weather Forecast
The Weather Underground
Enter a city, state, zip code or station code for the current National Weather Service forecast
Examples: "Albany", "NY", "Albany, NY", "12233", or "ALB"

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Real-Time Water Levels

These maps were prepared in partnership with the National Oceanic & Atmospheric Administration (NOAA) and its Center for Operational Oceanographic Products and Services (CO-OPS).

NOAA Logo - Link to NOAA Website
Coordinating Committee Logo - Link to CC Website

Lake Superior | St. Marys River | Lake Michigan | Lake Huron | St. Clair River
Lake St. Clair | Detroit River | Lake Erie | Niagara River | Lake Ontario | St. Lawrence

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Water Temperatures
Lake Superior Surface Water Temperatures
Michigan Sea Grant
Contour maps of surface water temps. This site uses satellite imagery from the Great Lakes CoastWatch Node to "build" a composite map of surface temps.

Lake Superior Temperature Profiles
NOAA Great Lakes Environmental Research Laboratory (GLERL)

Lake Superior Temperature Transects
NOAA Great Lakes Environmental Research Laboratory (GLERL)

Lake Superior Water Temperatures
NOAA Great Lakes Environmental Research Laboratory (GLERL)

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Beach Health
Wisconsin Great Lakes Beaches
Beach Health allows access to information on Great Lakes beaches in Wisconsin.

Great Lakes BeachCast
Great Lakes Information Network
An Internet gateway to information on Great Lakes beach conditions, including health advisories, weather, monitoring data and more.

Michigan Department of Environmental Quality – Online Beach Monitoring System
Michigan Department of Environmental Quality
To search for a beach or other location, enter any part of the beach name or waterbody name into the search box on the top of this page and click "GO".

Minnesota Lake Superior Beach Monitoring Program
Minnesota Pollution Control Agency
Information about swimming beach monitoring efforts, beach advisories, and fecal coliform and E. coli test results. Information updated daily in PDF format.

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Boating Safety/Security Advisories
Information for U.S. and Canadian Cross-Border Boaters
U.S. Coast Guard Ninth District
Information and requirements for U.S. and Canadian recreational boaters planning cross-border travel on the Great Lakes.

Ninth Coast Guard District Public Information Site
U.S. Coast Guard Ninth District
News on active Coast Guard searches and rescues.

Requirements for Foreign Recreational Boaters In Canadian Waters
Canadian Coast Guard, Office of Boating Safety
Information on boating safety and environmental protection regulations in Canadian Waters.

What American Boaters Need to Know When Entering Canada
U.S. Coast Guard, Office of Boating Safety
Important contact information and guidelines for boaters entering Canadian Waters.

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Fishing Conditions
Michigan Recreational Fishing Report
Michigan Department of Natural Resources (DNR)
Comprehensive Michigan fishing report covering Lake Michigan, Lake Superior, Lake Huron, Lake St. Clair, and Lake Erie fisheries.

Let's Fish Ontario!
Ontario Ministry of Natural Resources
Ontario fishing information and resources.

Minnesota North Shore Fishing Report (DNR)
Minnesota Department of Natural Resources
Weekly fishing report covering angling from Duluth to Hovland.

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Lock & Port Updates
Great Lakes St. Lawrence Seaway System : Customer Advisories
Great Lakes St. Lawrence Seaway System
Updates and advisories for Great Lakes locks and canals.

Soo Locks PORTS Data Products
Center for Oceanographic Operational Products and Services (NOAA)
The Physical Oceanographic Real-Time System (PORTS®) is a program of the National Ocean Service that provides ship masters and pilots with accurate real-time information required to avoid groundings and collisions.

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Ice Conditions
Western Great Lakes Ice Analysis
NOAA National Ice Center

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Related Resources
GLIN: Agencies and Organizations, Weather
GLIN: Climate Change in the Great Lakes Region
GLIN: Great Lakes-St. Lawrence Hydrology
GLIN: Great Lakes-St. Lawrence Water Flows
GLIN: Great Lakes-St. Lawrence Water Levels

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Great Lakes Information Network
Updated: July 28, 2016
Selected Photos: Copyright ©John and Ann Mahan
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