Representatives from the United States Environmental Protection Agency and Environment and Climate Change Canada presented on the ongoing efforts to manage excess phosphorus loads leading to toxic and nuisance algal blooms and hypoxia in Lake Erie. The webinar provided a brief overview of information and updates on work under the Nutrients Annex of the Great Lakes Water Quality Agreement (GLWQA) and included presentations by experts from the Nutrients Annex Subcommittee.
The United States and Canada adopted phosphorus load reduction targets to combat Lake Erie algal blooms.
The Governments of Canada and the United States are pleased to release the 2019 State of the Great Lakes Highlights Report, which provides an overview of the status and trends of the Great Lakes ecosystem. Overall, Great Lakes water quality is assessed as “fair and unchanging.” While progress to restore and protect the Great Lakes has occurred, including the reduction of toxic chemicals, challenges cited in the report include invasive species and excess nutrients that contribute to toxic and nuisance algae.
Click below to download a summary file of the tributary data on ErieStat.
Tributary monitoring data was used by the USGS, NCWQR, USEPA and ECCC to calculate spring and annual phosphorus loads. Annual loads were estimated at the river mouth using tributary monitoring and municipal discharge data from NCWQR, OEPA, MDEQ, USEPA, USGS, ECCC, and OMECC.
Ohio outlines actions to reduce phosphorus in Lake Erie.
Michigan outlines actions to reduce phosphorus loading to Lake Erie.
This document outlines federal and state efforts to achieve the binational phosphorus load reduction targets adopted in 2016 under the Great Lakes Water Quality Agreement.
The United States Environmental Protection Agency's Lake Erie webpage provides history, resources, and Lakewide Action and Management Plans (LAMPs).
The U.S. Environmental Protection Agency (U.S. EPA) has a page dedicated to cyanobacterial HABs, including information on health effects, causes and prevention, and state-specific resources.