Skip common site navigation and headers
EPA ReVA logo as header
Begin Hierarchical Links Guided Tour > Cumulative Impacts End Hierarchical Links

 

Cumulative Impacts

Although the impacts of each individual stressor are important to consider, the geographic areas most at risk are those which are subject to multiple stresses. Although we can't yet quantify the cumulative impacts of multiple stresses across a region, we can identify areas where the possibility of cumulative impacts is high.

This map shows all four stressors from the previous page (nitrogen, sediment, aquatic exotic species, nitrate deposition). The individual stressor information has been combined using an integration method that counts the number of times that a watershed is among the worst 20% (the Worst Quintiles integration method). All stressors are equally weighted.

Worst Quintiles of 4 stressors

 
Begin Site Footer Stats/Graphs Powered by Insightful