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The National Fish Habitat Partnership compiled freshwater datasets available at the national scale to develop habitat vulnerability scores across the United States. Datasets included anthropogenic disturbances and accounted for natural variation at different spatial scales. Chesapeake Bay watershed scores depict the current risk of habitat degradation and do not represent regional or local data sets for specific watersheds or geographies. The most limiting disturbances for Chesapeake Bay habitats were found to be agriculture, urbanization, mining and nutrients. The areas shown on this map indicate a high risk or very high risk of habitat degradation within the watershed. |