Images

Fish collection streams (n= 1,196) for 57 species within the Chesapeake Bay watershed (black outline). Grey circles indicate the presence of observed DELT, and white circles indicate its absence, in at least one individual fish at each stream. Major land use and land cover were obtained from the Chesapeake Bay Program (2023).

Various species of field-collected freshwater fish displaying DELT, including A) an eroded fin, B) melanistic areas, C) parasitic leeches (black arrow) and black spots (trematode, white arrows), D) a cyst (on gill), and E) tumors.

Maps showing the predicted year of submergence for parts of the Eastern Neck Island National Wildlife Refuge, as predicted by three different models under the same RSLR scenario.

Conceptual diagram of the measurement and modeling approaches used in this study. ΣPFAS (ng/L), summed concentration of PFAS in nanograms per liter.

Map showing predicted environmental concentrations (PEC) of PFAS in Potomac River watershed streams, where PFAS is represented as the summed concentration of eight PFAS found in wastewater treatment plant discharges, in nanograms per liter (ng/L).

This map displays the 10-year trend for total phosphorus, as well as the percent total change in flow-normalized loads for total phosphorus across the Chesapeake Bay Watershed from 2014 to 2023. 

This map displays the average 10-year per acre loads, also known as yields, of total phosphorus across the Chesapeake Bay Watershed from 2014 to 2023. 

This map displays the average 10-year per acre loads, also known as yields, of orthophosphate across the Chesapeake Bay Watershed from 2014 to 2023. 

This map displays the average 10-year per acre loads, also known as yields, of suspended sediment across the Chesapeake Bay Watershed from 2014 to 2023. 

This map displays the average 5-year per acre loads of total phosphorus across the Chesapeake Bay Watershed from 2019 to 2023. 

Learn more about Chesapeake Bay Water-Quality Loads and Trends and the USGS Nontidal Network.

This map displays the average 5-year per acre loads, also known as yields, of orthophosphate, also known as total inorganic nitrogen, across the Chesapeake Bay Watershed from 2019 to 2023. 

This map displays the average 5-year per acre loads, also known as yields, of nitrate + nitrite, also known as total inorganic nitrogen, across the Chesapeake Bay Watershed from 2019 to 2023. 

This map displays the load of nitrate + nitrite across the Chesapeake Bay Watershed in 2023. 

Learn more about Chesapeake Bay Water-Quality Loads and Trends and the USGS Nontidal Network.

This map displays the load of total phosphorus across the Chesapeake Bay Watershed in 2023. 

Learn more about Chesapeake Bay Water-Quality Loads and Trends and the USGS Nontidal Network.

This map displays the long term trend for total nitrogen, as well as the percent total change in flow-normalized loads for total nitrogen across the Chesapeake Bay Watershed from 1985 to 2023. 

This map displays the long term trend for orthophosphate, as well as the percent total change in flow-normalized loads for orthophosphate across the Chesapeake Bay Watershed from 1985 to 2023. 

This map displays the long-term trend for nitrate + nitrite, also known as inorganic nitrogen, as well as the percent total change in flow-normalized loads for nitrate + nitrite across the Chesapeake Bay Watershed from 1985 to 2023. 

This map displays the 10-year trend for orthophosphate, as well as the percent total change in flow-normalized loads for orthophosphate across the Chesapeake Bay Watershed from 2014 to 2023. 

This map displays the 10-year trend for total phosphorus, as well as the total change in flow-normalized loads per acre for total phosphorus across the Chesapeake Bay Watershed from 2014 to 2023. 

This map displays the average 10-year per acre loads, also known as yields, of nitrate + nitrite, also known as inorganic nitrogen, across the Chesapeake Bay Watershed from 2014 to 2023. 

This map displays the long-term trend for orthophosphate, as well as the total change in flow-normalized per-acre loads for orthophosphate across the Chesapeake Bay Watershed from 1985 to 2023.