Great Lakes Water Levels
Water levels on the Great Lakes are dynamic. They change in the shorter timeframe of seconds to days due primarily to wind patterns and waves and in the longer timeframe of months to years due to precipitation in the basin, evaporation, and flow through the rivers that connect the lakes. These resources can help people understand the variability of lake levels and how communities can become more resilient to extreme water levels.
All of Wisconsin’s coastal communities are vulnerable to flooding. The resources featured in this topic are organized by the four phases of emergency management – preparedness, response, recovery and mitigation. Utilizing these resources can help local officials and property owners become more resilient to flooding hazards.
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.
Wisconsin’s Great Lakes beaches are playgrounds for summer fun. These resources help local officials make informed decisions about beach management and help beach visitors stay safe..
Green Bay is recognized as the largest large freshwater estuary in the world. Its waters are nutrient rich and high in biological productivity, making it an important area for many fish species and migratory birds. The resources featured in this topic provide a better understanding of the Green Bay ecosystem.
Nearshore Freshwater Habitats
Nearshore freshwater habitats are an important component of the complex and dynamic Great Lakes Basin and are vital to the success of Wisconsin’s coastal communities. These areas are a key priority for restoration and protection because they are the source of drinking water for most coastal communities, are the areas of the lakes where most human recreation (e.g., swimming, boating, and fishing) and education opportunities occur, and are the critical ecological link between watersheds and the open waters of the Great Lakes.