There will be a planned outage of this website beginning 8:00 am CST on Monday, March 3 and lasting through Wednesday, March 5 as we migrate our network to EPA’s National Computer Center. During the move, this website will be unavailable. Please check the site on Thursday March 6, 2025 after 8 am CST as we hope to have all services restored by then. Il y aura une interruption programmée de ce site web à partir de 8h00 CST le lundi 3 mars et jusqu'au mercredi 5 mars, car nous transférons notre réseau vers le Centre National de l'Informatique de l'EPA. Pendant cette période, le site web sera indisponible. Veuillez vérifier le site le jeudi 6 mars 2025 après 8h00 CST, car nous espérons avoir rétabli tous les services d'ici là.

U.S. and Canada Report on Relevant and Available Groundwater Science to meet GLWQA Commitment

Posted: December 3, 2015
Staining of rock face due to groundwater seepage along Superior shoreline: Pictured Rocks National Lakeshore near Munising, Michigan. Photo credit: Craig Blacklock, National Park Service.

The 2012 Great Lakes Water Quality Agreement includes a commitment to publish a report on relevant and available groundwater science.  In response to this commitment, a draft report has been completed that documents groundwater science relevant to the Great Lakes Water Quality Agreement. The draft report is a product of extensive collaboration among experts in a variety of subject areas and summarizes current knowledge on groundwater in the Great Lakes region.

Canada and the United States are seeking comments on the draft report:

Comments were accepted using the Contact Us form until January 31, 2016.

This effort is being led by the Groundwater Annex Subcommittee.