Great Lakes Restoration Initiative


The Great Lakes Restoration Initiative (GLRI) was established in 2009 to accelerate efforts to protect and restore the Great Lakes. The USGS is collaborating with partners to provide science to meet GLRI Action Plan goals and inform resource management decisions.


Great Lakes Restoration Initiative

Great Lakes Restoration Initiative

Learn more about the GLRI and partners involved:

Science: The Great Lakes Mapper (SiGL)

Science: The Great Lakes Mapper (SiGL)

See where science is being conducted in The Great Lakes

SiGL Mapper

Additional Information Links

View the links below to learn additional information about the Great Lakes Restoration Initiative


GLRI Action Plan 2


U.S. Fish and Wildlife Service and GLRI

NOAA and the Great Lakes


Date published: March 6, 2019

Newly Hatched Invasive Grass Carp Found in Maumee River, Ohio

A genetic analysis conducted by the U.S. Geological Survey recently confirmed that  larval, or newly hatched, fish collected from the Maumee River during the summer of 2018 are grass carp, one species of invasive Asian carps that threaten the Great Lakes. The Maumee River is a tributary to Lake Erie.

Date published: October 9, 2018

Students visit GLSC Chesterton lab to learn about microbiology applications

Students from Indiana University Northwest visited the Lake Michigan Ecological Research Station (GLSC, Chesterton, Indiana).

Date published: March 9, 2018

Tree Swallow GLRI Story Map

This Story Maps accompanies 4 peer-reviewed publications to provide a convenient and useful tool to access the information contained within these four peer-reviewed publications.  The tree swallow data are easily visualized on a landscape scale, or more detail can be obtained by drilling down.  These data are being used by States and EPA in their Beneficial Use Impairment (BUI) assessments. ...


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Year Published: 2019

Resurgence of cisco (Coregonus artedi) population levels in Lake Michigan

In recent decades, many factors that were linked with the decline of Great Lakes cisco (Coregonus artedi) populations have subsided. The goal of this study was to investigate where cisco exist in Lake Michigan and evaluate evidence for recovery including when, where, and to what extent it is occurring. We evaluated datasets from several...

Claramunt, Randall M.; Smith, Jason; Donner, Kevin; Povolo, Annalise; Herbert, Matthew E.; Galarowicz, Tracy; Claramunt, Tracy L.; DeBoe, Scott; Stott, Wendylee; Jonas, Jory L.

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Year Published: 2019

Conducting and interpreting fish telemetry studies: Considerations for researchers and resource managers

Telemetry is an increasingly common tool for studying the ecology of wild fish, with great potential to provide valuable information for management and conservation. For researchers to conduct a robust telemetry study, many essential considerations exist related to selecting the appropriate tag type, fish capture and tagging methods, tracking...

Brownscombe, Jacob W; Ledee, Elodie; Raby, Graham D.; Struthers, Daniel P; Gutowsky, Lee F G; Nguyen, Vivian M.; Young, Nathan; Stokesbury, Michael J W; Holbrook, Christopher; Brenden, Travis O.; Vandergoot, Christopher; Murchie, Karen J; Whoriskey, Kim; Mills-Flemming, Joanna; Kessel, Steven T.; Krueger, Charles C.; Cooke, Steven J.

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Year Published: 2019

Climate, streamflow, and lake-level trends in the Great Lakes Basin of the United States and Canada, water years 1960–2015

Water levels in the Great Lakes fluctuate substantially because of complex interactions among inputs (precipitation and streamflow), outputs (evaporation and outflow), and other factors. This report by the U.S. Geological Survey in cooperation with the Great Lakes Restoration Initiative was completed to describe trends in climate, streamflow, lake...

Norton, Parker A.; Driscoll, Daniel G.; Carter, Janet M.
Norton, P.A., Driscoll, D.G., and Carter, J.M., 2019, Climate, streamflow, and lake-level trends in the Great Lakes Basin of the United States and Canada, water years 1960–2015: Scientific Investigations Report 2019–5003, 47 p.,