Cyanobacterial Harmful Algal Blooms in Water

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.

Pennsylvania outlines actions to reduce phosphorus in Lake Erie.

Ohio outlines actions to reduce phosphorus in Lake Erie.

Indiana outlines actions to reduce phosphorus in Lake Erie. The button below provides the Action Plan, but for additional information on the plan development process, Indiana"s DAP website outlines these details.

The Great Lakes Water Quality Agreement (GLWQA), signed by Canada and the United States, is a commitment to protect the waters of the Great Lakes. It was most recently updated in 2012. Annex 4 was formed to manage phosphorus concentrations and loadings (and other nutrients if warranted) in the Great Lakes.

The United States and Canada adopted phosphorus load reduction targets to combat Lake Erie algal blooms. 

The Great Lakes St. Lawrence Governors & Premiers Aquatic Invasive Species Task Force works to stop the introduction and spread of aquatic invasive species (AIS) into the Great Lakes and St. Lawrence River Basin. Since its inception, the Task Force has coordinated state and provincial efforts to combat AIS through strategic regional action.