Nutrients Documents

Under the 2012 Great Lakes Water Quality Agreement, Canada and the United States use an Adaptive Management approach for addressing eutrophication issues in Lake Erie. The Annex 4 (Nutrients) Subcommittee’s Adaptive Management Task Team conducted an evaluation to assess changes in phosphorus loads and progress towards achieving the related Lake Ecosystem Objectives outlined under Annex […]

Through the Great Lakes Water Quality Agreement (Agreement), Annex 4 (Nutrients), Canada and the United States (the Parties) have committed to coordinate binational actions to manage phosphorus loadings to the Great Lakes to combat harmful and nuisance algal blooms and hypoxia. The Parties adopted phosphorus load reduction targets in 2016 to reduce inputs to the […]

To help manage nutrient loads and mitigate the impacts of harmful and nuisance algae in the Great Lakes, the United States and Canada committed, through the 2012 Great Lakes Water Quality Agreement (GLWQA), to review (and revise if appropriate) the binational phosphorus targets for each of the Great Lakes. The United States and Canada have […]

To help manage nutrient loads and mitigate the impacts of harmful and nuisance algae in Lake Ontario, the United States and Canada committed, through the 2012 Great Lakes Water Quality Agreement (GLWQA), to review (and revise if appropriate) the binational phosphorus targets for Lake Ontario. Based on the findings of a recent assessment, the GLWQA […]

The Great Lakes Water Quality Agreement commits Canada and the United States to prepare and issue a Binational Strategy for Phosphorus Reduction in Lake Erie. This Strategy includes: The Strategy [PDF] (1.05 MB) was developed by the Nutrients Annex Subcommittee.

To combat the growing threat of toxic and nuisance algal development in Lake Erie, the United States and Canada committed, through the 2012 Great Lakes Water Quality Agreement, to establish binational phosphorus load reduction targets for Lake Erie by February, 2016, and to develop domestic action plans by 2018 that will outline strategies for meeting […]

To combat the growing threat of toxic and nuisance algal development in Lake Erie, the United States and Canada committed, through the 2012 Great Lakes Water Quality Agreement, to establish binational phosphorus load reduction targets for Lake Erie by February, 2016, and to develop, by 2018, domestic action plans that will outline strategies for meeting […]

To combat the growing threat of toxic and nuisance algal development in Lake Erie, the United States and Canada committed, through the 2012 Great Lakes Water Quality Agreement, to establish binational phosphorus load reduction targets for Lake Erie by February, 2016. In response to this commitment, following a robust binational science-based process and extensive public […]

To combat the growing threat of toxic and nuisance algal development in Lake Erie, the United States and Canada have committed, through the 2012 Great Lakes Water Quality Agreement, to develop revised binational phosphorus load reduction targets for Lake Erie by February, 2016. In response to this commitment, in 2013, federal agencies, state and provincial […]