Analysis of the condition of riparian buffer* vegetation at the sub-watershed level.

Source: The Chesapeake Conservancy.

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Sub-watershed (HU12) boundaries.

Source: Reach data (1:24,000 scale). Watershed Boundary Dataset (WBD). U.S. Geological Survey.

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James River and tributary waters stream data.

Source:  Stream data (1:100,000 scale); National Hydrography Dataset (NHD). U.S. Geological Survey.

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*A riparian buffer is a vegetative buffer strip, located along streams, that helps mitigate the impacts (such as runoff) from surrounding land uses.

Map produced by the Cheapeake Conservancy and National Geographic Maps