Phosphorus Control Results

Click the area of interest

Lake Dashboard

State of the Lake

Elevated phosphorus concentrations in Lake Erie cause different problems in each of the three basins: HABs in the warm and shallow western basin, hypoxic (or low oxygen) conditions in the central basin, and nuisance algae along the eastern basin shore.

Harmful Algal Blooms

A bloom severity index has been developed by the governments to evaluate the amount of algal biomass over the peak 30 days of each year’s algal bloom

Progress Toward GLWQA Commitments

The Great Lakes Water Quality Agreement (GLWQA) was revised in 2012 and included provisions to limit the phosphorus entering Lake Erie’s western and central basins. The U.S. and Canada have been making progress toward these commitments by establishing targets and identifying strategies to meet the targets.

Tributary Dashboard

Spring Phosphorus Targets

The Maumee River and 7 additional tributaries are targeted for a 40% reduction of spring (March - July) phosphorus loads to prevent nearshore algal blooms.

Annual Phosphorus Targets

The Detroit River and 9 additional tributaries are targeted for a 40% reduction of annual phosphorus loads to prevent hypoxia.

Lake Loading

The proposed 40% reductions from these tributaries will significantly reduce the annual total phosphorus load to the lake.

Land Dashboard

This dashboard remains under construction as the ErieStat team continues its collaboration with governments and other partners. What happens on the land affects the water, so our team is working to present a big picture view of progress toward keeping phosphorus on the land and out of tributary rivers and Lake Erie.