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Notice regarding image quality

Coastwatch users:
Due to technical issues, this site is no longer able to produce updated surface water temperature contour maps. Please check back in July for more information about future resources.
Daily maps of observed surface temperatures can be found at these NOAA links:
Lake Superior:
Lake Michigan & Lake Huron:
Lake Erie:
Lake Ontario:

Lake Erie
[Full Lake View]

Lake St. Clair
[Full Lake View]

Lake Erie Regions
[Western Region] [Central Region] [Eastern Region]

Lake Erie Port Images
[Monroe/Toledo] [Sandusky] [Black River] [Cleveland East] [Ashtabula] [Erie] [Evangola]

Regional and Port Image Map

Select a label to view region or port map.

Western Region Central Region Eastern Region Monroe/Toledo Port Area Lake St. Clair Sandusky Port Area Black River Port Area Cleveland East Port Area Ashtabula Port Area Erie Port Area Angola Port Area
Most questions can be answered by your Sea Grant Agent or on our CoastWatch Help Pages. Please send comments or bug reports to Please include the name of the location or file that's giving you trouble, as well as the type of software you are running. This is a cooperative project between the NOAA CoastWatch Great Lakes Regional Node located at the NOAA Great Lakes Environmental Research Laboratory in Ann Arbor and the Sea Grant Network.
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