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

 

Current Vulnerability

Information about the geographic distribution of cumulative impacts and resources can be used to identify areas that are most vulnerable to environmental degradation. For example, areas with high levels of stress and with high aquatic species diversity might be considered to have the most vulnerable aquatic populations. Areas with high levels of stress but low numbers of species are already degraded.

This map shows the distribution of aquatic native species in relative terms; i.e. the 25% of watersheds with lowest species counts up to the 25% with highest counts. This map adds the normalized values of the stressors and breaks them into four equal bins with the ones with the most stressors in the right most column (column 4). The single resource uses the normalized value and breaks it into 4 equal bins.

Stressor-Resource Overlay
 
Begin Site Footer Stats/Graphs Powered by Insightful