Images

Technicians Laura Yates and Erik Kaseloo complete field activities for a spring habitat assessment at at U.S. Geological Survey streamgage station 0164579245, The Glade, near Pegasus Lane at Reston, VA, on April 24, 2025.

Spring 2025 Photo Contest Winner:  Taylor Camper, Honorable Mention category

Two USGS hydrologic technicians taking GPS levels at the Ramsgate Conveyance Channel near Great Bridge, Virginia.

Data for this site can be found at USGS Water Data for the Nation.

Two USGS hydrologic technicians taking GPS levels at the Ramsgate Conveyance Channel near Great Bridge, Virginia.

Data for this site can be found at USGS Water Data for the Nation.

Two USGS hydrologic technicians taking GPS levels at the Ramsgate Conveyance Channel near Great Bridge, Virginia.

Data for this site can be found at USGS Water Data for the Nation.

Two USGS hydrologic technicians taking GPS levels at the Ramsgate Conveyance Channel near Great Bridge, Virginia.

Data for this site can be found at USGS Water Data for the Nation.

Total Sediment Load

Total sediment load is the amount of sediment transported by a waterway past a given point over a given amount of time. Total sediment load has two components: suspended sediment and bedload.

Water is a major way that sediment is transported from one area to another.

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 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 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 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. 

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