Ports, Harbors & Marinas

Commercial shipping in Wisconsin requires well-maintained ports and harbors, while recreational boating relies on access to marinas and other landings. These resources help guide decision-making about the marine infrastructure that supports shipping and boating.


GLOS Boater's View

This interactive map provides recreational boaters with information on lake and river conditions to help them determine if it is a good day for boating. It also provides the locations of marinas and boat launches.
Great Lakes Observing System

View the map... 


Nautical Charts

Nautical charts for the Great Lakes are available in many digital formats from the NOAA Office of Coast Survey. Learn about nautical cartography and how nautical charts are updated.


Sea Cave Watch

This tool provides photos and data about conditions at the sea caves on the mainland of the Apostle Islands National Lakeshore. It is intended to help kayakers make informed decisions about visiting the caves.
Department of Civil and Environmental Engineering, UW-Madison

View the tool... 


Economic Valuation of Port Infrastructure

This case study in the Great Lakes Coastal Resilience Planning Guide helps communities appraise the current value of their navigational and port infrastructure, allowing them to project the potential costs of maintaining or replacing these resources in the face of changing water levels and storm conditions caused by climate variation.
Association of State Floodplain Managers as part of the NOAA Digital Coast Partnership

View the case study... 
University of Wisconsin Sea Grant Institute, 1975 Willow Drive FL 2, Madison, WI 53706-1177 ph 608-262-0905
If you have trouble accessing this page or wish to request a reasonable accommodation because of a disability contact us.