Please join us on Thursday, January 23 from 10:30 a.m. -12:00 p.m. eastern / 9:30 a.m. -11:00 a.m. central for a webinar that will provide updates on work under the Nutrients Annex of the Great Lakes Water Quality Agreement. During this webinar we will summarize current conditions in Lake Erie, and you will hear about […]
Posted: December 18, 2024Nutrients (Annex 4)
This is an archive of all information related to Nutrients (Annex 4).
5-Year Binational Adaptive Management Evaluation for Lake Erie (2017-2021): Measuring the Ecosystem Response to Nutrients
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 […]
Posted: September 23, 2024Binational Lake Erie Nutrient Adaptive Management Framework
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 […]
Posted: September 23, 2024United States and Canada agree to retain existing binational phosphorus targets for Lake Ontario
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 […]
Posted: February 12, 2024Great Lakes Water Quality Agreement Nutrients Annex Webinar: 2023 Lake Erie Update
Please join us on Wednesday, December 13th from 10:30-12:00 pm eastern / 9:30-11:00 pm central for a webinar that will provide updates on work under the Nutrients Annex of the Great Lakes Water Quality Agreement (GLWQA). This webinar will summarize ongoing efforts to manage excess phosphorus loads that are leading to toxic and nuisance algal […]
Posted: November 27, 2023Nutrients Annex Subcommittee Recommends Retaining Lake Ontario Phosphorus Targets
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 […]
Posted: July 11, 2023Great Lakes Water Quality Agreement Nutrients Annex Webinar: Update on Nutrient Reduction Efforts in Lake Erie
Please join us on Friday, November 15th from 1:00-3:00pm EST / 12:00-2:00pm CST for a webinar that will provide a brief overview of information and updates on work under the Nutrients Annex of the Great Lakes Water Quality Agreement (GLWQA). This webinar will present ongoing efforts to manage excess phosphorus loads leading to toxic and […]
Posted: October 30, 2019Lake Erie Binational Phosphorus Reduction Strategy
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.
Posted: June 14, 2019Domestic Action Plans to Achieve Phosphorus Reductions in Lake Erie
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 […]
Posted: March 7, 2018