Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Explore our planet and learn more about our work through photographs and imagery from scientists and support staff.
This map displays the 10-year trend for total nitrogen, as well as the total change in flow-normalized loads per acre for total nitrogen across the Chesapeake Bay Watershed from 2014 to 2023.
This map displays the 10-year trend for total nitrogen, as well as the total change in flow-normalized loads per acre for total nitrogen across the Chesapeake Bay Watershed from 2014 to 2023.
This map displays the 10-year trend for suspended sediment, as well as the total change in flow-normalized loads per acre for suspended sediment across the Chesapeake Bay Watershed from 2014 to 2023.
This map displays the 10-year trend for suspended sediment, as well as the total change in flow-normalized loads per acre for suspended sediment across the Chesapeake Bay Watershed from 2014 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 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 10-year trend for total nitrogen, as well as the percent total change in flow-normalized loads for total nitrogen across the Chesapeake Bay Watershed from 2014 to 2023.
This map displays the 10-year trend for total nitrogen, as well as the percent total change in flow-normalized loads for total nitrogen across the Chesapeake Bay Watershed from 2014 to 2023.
This map displays the load of total nitrogen 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 nitrogen 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 orthophosphate 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 orthophosphate 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 suspended sediment 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 suspended sediment 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 phosphorus, as well as the percent total change in flow-normalized loads for total phosphorus across the Chesapeake Bay Watershed from 1985 to 2023.
This map displays the long term trend for total phosphorus, as well as the percent total change in flow-normalized loads for total phosphorus across the Chesapeake Bay Watershed from 1985 to 2023.
This map displays the long term trend for suspended sediment, as well as the percent total change in flow-normalized loads for suspended sediment across the Chesapeake Bay Watershed from 1985 to 2023.
This map displays the long term trend for suspended sediment, as well as the percent total change in flow-normalized loads for suspended sediment across the Chesapeake Bay Watershed from 1985 to 2023.
This map displays the long-term trend for total nitrogen, as well as the total change in flow-normalized per-acre loads for total nitrogen across the Chesapeake Bay Watershed from 1985 to 2023.
This map displays the long-term trend for total nitrogen, as well as the total change in flow-normalized per-acre loads for total nitrogen across the Chesapeake Bay Watershed from 1985 to 2023.
This map displays the average 10-year trends and per acre loads, also known as yields, of suspended sediment across the Chesapeake Bay Watershed from 2014 to 2023.
This map displays the average 10-year trends and per acre loads, also known as yields, of suspended sediment 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 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.
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.
This map displays the average 5-year per acre loads, also known as yields, of total 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 total nitrogen across the Chesapeake Bay Watershed from 2019 to 2023.
This map displays the 10-year trend for nitrate + nitrate (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 2014 to 2023.
This map displays the 10-year trend for nitrate + nitrate (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 2014 to 2023.
This map displays the average 10-year per acre loads, also known as yields, of total nitrogen 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 nitrogen across the Chesapeake Bay Watershed from 2014 to 2023.
This map displays the average 10-year trends and per acre loads, also known as yields, of total nitrogen across the Chesapeake Bay Watershed from 2014 to 2023.
This map displays the average 10-year trends and per acre loads, also known as yields, of total nitrogen across the Chesapeake Bay Watershed from 2014 to 2023.
This map displays the average 10-year trends and per acre loads, also known as yields, of nitrate + nitrite across the Chesapeake Bay Watershed from 2014 to 2023.
This map displays the average 10-year trends and per acre loads, also known as yields, of nitrate + nitrite across the Chesapeake Bay Watershed from 2014 to 2023.
This map displays the average 10-year trends and 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 trends and 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 trends and 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 trends and per acre loads, also known as yields, of orthophosphate across the Chesapeake Bay Watershed from 2014 to 2023.
USGS water expert Jeremy White measures how high and fast floodwaters are moving at Piney Creek near Raleigh, WV. He's using special water measurement equipment (a hydroacoustic doppler profiler) to collect this data.
USGS water expert Jeremy White measures how high and fast floodwaters are moving at Piney Creek near Raleigh, WV. He's using special water measurement equipment (a hydroacoustic doppler profiler) to collect this data.