EPA: How's My Waterway? is an interactive mapping tool "designed to provide the general public with information about the condition of their local waters based on data that states, federal, tribal, local agencies and others have provided to EPA."
USGS: Science in Your Waterway "The purpose of this site is to help you find scientific information organized on a watershed basis. This information, coupled with observations and measurements made by the watershed groups, provides a powerful foundation for characterizing, assessing, analyzing, and maintaining the status and health of a watershed."
Department of Environment, Great Lakes, and Energy (EGLE): Water Resources Division
Have you heard about harmful algal blooms? Learn the basics about the eutrophication that causes harmful algal blooms (NOAA) and the reasons eutrophication is important in the Great Lakes Basin (GLISA).