Chesapeake Bay Activities

Data and Tools

The data resources page contains USGS information for key national data sets and more specific information for the Chesapeake Bay watershed.

Estimated streamflow entering the Chesapeake Bay is computed on a monthly and annual basis ...learn more.

Water-Quality Loads and Trends at Nontidal Monitoring Stations in the Chesapeake Bay Watershed

Chesapeake Bay Activities Data Resources

Filter Total Items: 17
Date published: August 4, 2020

Loads and trends in the Chesapeake Bay nontidal monitoring network: results through Water Year 2018

The mapper provides the primary findings for nitrogen, phosphorus and suspended-sediment trends, and gives the user tools to further examine the results for river basins and individual sites. Data used in the mapper, and the methods used to compute trends and loads, can be also accessed from the tool.

Date published: January 4, 2020

A table of annual nutrient and suspended sediment loads at the Chesapeake Bay Nontidal Network Stations:1985 to 2016.

A Table of annual nutrient and suspended sediment loads at the Chesapeake Bay Nontidal Network Stations:1985 to 2016.

Date published: January 4, 2020

A table of average yields for the Chesapeake Bay Nontidal Network Monitoring stations for water years 2007 to 2016.

A table of average yields for the Chesapeake Bay Nontidal Network Monitoring stations for water years 2007 to 2016.

Date published: January 4, 2020

A table of monthly nutrient and suspended sediment loads at the Chesapeake Bay Nontidal Network Stations:1985 to 2016.

A Table of monthly nutrient and suspended sediment loads at the Chesapeake Bay Nontidal Network Stations:1985 to 2016.

Date published: January 4, 2020

PART 2: A table of trends in flow-normalized load from the Chesapeake Bay Nontidal Monitoring stations.

A table of trends in flow-normalized load from the Chesapeake Bay Nontidal Monitoring stations.

Date published: January 4, 2020

PART 1: A table of trends in flow-normalized load from the Chesapeake Bay Nontidal Monitoring stations.

A table of trends in flow-normalized load from the Chesapeake Bay Nontidal Monitoring stations.

Date published: July 9, 2019

Freshwater Flow into Chesapeake Bay

The USGS provides estimates of the monthly and annual amounts of freshwater flow into the Bay so scientists and managers can better understand effects on ecosystem conditions.

Date published: July 8, 2019

Chesapeake Bay Period-of-Record Summary Statistics

Chesapeake Bay streamflow period-of-record summary statistics are listed in tabular form.

Date published: July 8, 2019

Chesapeake Bay Monthly and Annual Streamflow Ranked by Month and Year

Chesapeake Bay monthly mean streamflow estimates for the period-of-record are ranked by month (1 = highest ranking). Chesapeake Bay water-year annual streamflow estimates for the period-of-record are ranked (1 = highest ranking). 

Date published: July 8, 2019

Chesapeake Bay Period-of-Record Annual Mean Streamflow By Cross Section: Susquehanna River and Potomac River

This table lists estimated annual mean streamflow entering the Chesapeake Bay over the period-of-record, by river cross section. Units are cubic feet per second.

Date published: July 8, 2019

Chesapeake Bay Period-of-Record Annual Mean Streamflow By Cross Section: James River

This table lists estimated annual mean streamflow entering the Chesapeake Bay over the period-of-record, by river cross section. Units are cubic feet per second.

Date published: July 8, 2019

Chesapeake Bay Period-of-Record Monthly Mean Streamflow By Cross Section: Susquehanna River

Chesapeake Bay streamflow period-of-record supporting data are listed in tabular form.