An Overview of Chesapeake Bay Freshwater Streamflows and Water-Quality Loads and Trends

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Welcome. This site is your gateway to learning more about Chesapeake Bay freshwater streamflows and nontidal water-quality loads and trends.

Explore resources here, and find:

(1) Estimates of freshwater flows entering Chesapeake Bay.

(2) Water-quality load and trend results for nontidal rivers of the Chesapeake Bay watershed.

The health of the Chesapeake Bay is largely driven by changes in streamflows and the amount of pollution they contain. Runoff in the Chesapeake Bay watershed carries pollutants, such as nutrients and sediments, to rivers and streams that drain to the Bay. Scientists use estimated streamflow entering the Chesapeake Bay to assess the health of the Bay and make ecological forecasts.

Streamflow

Estimated streamflows entering the Chesapeake Bay are computed monthly and annually using streamflow measurements from the Susquehanna, Potomac, and James Rivers.

Water-Quality Loads and Trends

The Chesapeake Bay Nontidal Monitoring Program quantifies nutrient and sediment loads in the Chesapeake Bay's nontidal rivers and estimates changes over time (trends) in these nutrients and sediments.

Follow these links to find many resources describing Chesapeake Bay freshwater streamflows and nontidal water-quality loads and trends.

Click here to learn more about Chesapeake Bay freshwater streamflows

Click here to learn more about Chesapeake Bay nontidal water-quality loads and trends