Scott W. Phillips Scott W. Ator Douglas L. Moyer James S. Webber Rachel Felver Jennifer L. Keisman Lee A. McDonnell Rebecca Murphy Emily M. Trentacoste Qian Zhang William C. Dennison Sky Swanson Brianne Walsh Jane Hawkey Dylan Taillie Kenneth Hyer 2021 <p>The Chesapeake Bay Program maintains an extensive nontidal monitoring network, measuring nitrogen and phosphorus (nutrients) at more than 100 locations on rivers and streams in the watershed. Data from these locations are used by United States Geological Survey to assess the ecosystem’s response to nutrient-reduction efforts. This fact sheet summarizes recent trends in nitrogen and phosphorus in nontidal tributaries and identifies some of the complex factors that affect local water quality, and ultimately, the Chesapeake Bay.</p> application/pdf 10.3133/fs20203069 en U.S. Geological Survey Nutrient trends and drivers in the Chesapeake Bay Watershed reports