The Lake Guardian is a research vessel at the center of one of the longest-running lake monitoring programs. Scientists aboard the ship search for clues about the overall health of the Great Lakes, gathering observations that help track changes over time.
The data collected during these cruises is considered critical for both researchers and resource managers. It provides a continuous record that supports decisions about the lakes' management and helps scientists understand the factors affecting this major freshwater system.
Because the program has run for so long, its measurements offer a rare long-term view of the Great Lakes' condition. The findings from the Lake Guardian help connect short-term observations to broader environmental trends.