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EPA’s Research Vessel Lake Guardian Begins Summer Survey of Great Lakes

During the survey, scientists on the R/V Lake Guardian will collect samples of water and aquatic organisms such as plankton, zooplankton, and benthic invertebrates to assess water quality in the Great Lakes.

August 1, 2025

EPA’s 2025 Lake Michigan Benthic Survey Underway

Scientist aboard EPA’s largest research vessel, the R/V Lake Guardian, are collecting benthic samples in Lake Michigan to monitor the abundance and spread of invasive quagga mussels.

July 18, 2025

EPA’s Lake Guardian 2021 Summer Water Quality and Biology Survey Underway

From Sept. 3-17, scientists aboard the EPA Research Vessel Lake Guardian will conduct the 2021 EPA Great Lakes Summer Water Quality Monitoring Program and Biology Monitoring Program surveys on Lake Michigan, Lake Huron and Lake Superior.

September 3, 2021