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New AI-supported, high-resolution Chesapeake Bay Watershed stream maps reveal additional waterways and will help prioritize restoration projects 

Jun 26, 2025 • By Sarah Hansen, M.S. '15

A dataset unveiled today more than doubles the documented stream miles in the Chesapeake Bay Watershed. The stream map project lays a robust foundation for sustainable management of one of North America’s most critical ecosystems, which spans six states and supports millions of residents and iconic wildlife. The new, high-resolution dataset offers the clearest picture yet of how water moves through both pristine landscapes and altered terrain throughout the watershed. 

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