World Environmental and Water Resources Congress 2019
Progress on the Chesapeake Bay TMDL and Challenges in Meeting the 2025 Pollution-Reduction Loads
Publication: World Environmental and Water Resources Congress 2019: Watershed Management, Irrigation and Drainage, and Water Resources Planning and Management
ABSTRACT
In December 2010, EPA released the TMDL for the Chesapeake Bay. Specifically, the TMDL sets Bay watershed limits of 84.4 million kg/yr of nitrogen, and 5.7 million kg/yr of phosphorus, a 25% reduction in nitrogen and 24% reduction in phosphorus. Agriculture is the largest single source of nitrogen, phosphorus, and sediment loading to the bay. Each state was to reduce nitrogen, phosphorus, and sediment TMDL target reduction loads by 60% by 2017. West Virginia is the only state that has achieved their 2017 target load reductions for nitrogen, phosphorus, and sediment. Maryland, Pennsylvania, Virginia, and New York have not achieved their 2017 nitrogen load reductions for agriculture. Septic tank nitrogen loads have increased in Maryland and Virginia.
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REFERENCES
Chesapeake Bay Foundation. (2018a). “2017 Maryland Midpoint Assessment”. Available at http://www.cbf.org/how-we-save-the-bay/chesapeake-clean-water-blueprint/2017-maryland-idpoint.html
Chesapeake Bay Foundation. (2018b). “2017 Pennsylvania Midpoint Assessment”. Available at http://www.cbf.org/how-we-save-the-bay/chesapeake-clean-water-blueprint/2017-pennsylvania-midpoint.html
Chesapeake Bay Foundation. (2018c). “2017 Virginia Midpoint Assessment”. Available at http://www.cbf.org/how-we-save-the-bay/chesapeake-clean-water-blueprint/2017-virginia-midpoint.html
Chesapeake Bay Foundation. (2018d). “Current and Future Challenges”Available at http://www.cbf.org/how-we-save-the-bay/chesapeake-clean-water-blueprint/current-and-future-challenges.html
U.S. Environmental Protection Agency. (2011).” Chesapeake Bay TMDL”. EPA, Washington, DC. Available at http://www.epa.gov.reg3wapd/tmdl/chesapeakebay/tmd/exec.html.
U.S. Environmental Protection Agency. (2018a). “Chesapeake Bay TMDL: EPA Final Evaluation of 2016-2017 Milestone and Midpoint Progress and 2018-2019 Milestone commitments in the Chesapeake Bay Watershed”. EPA, Washington, DC. Available at https://www.epa.gov/chesapeake-bay-tmdl/epa-final-evaluation-2016-2017-milestone-and-midpoint-progress-and-2018-2019
U.S. Environmental Protection Agency. (2018b). “Chesapeake Bay TMDL: EPA Oversight of Watershed Implementation Plans (WIPS) and Milestones in the Chesapeake Bay Watershed”. EPA, Washington, DC. Available at https://www.epa.gov/chesapeake-bay-tmdl/epa-oversight-watershed-implementation-plans-wips-and-milestones-chesapeake-bay
Information & Authors
Information
Published In
World Environmental and Water Resources Congress 2019: Watershed Management, Irrigation and Drainage, and Water Resources Planning and Management
Pages: 63 - 70
Editors: Gregory F. Scott and William Hamilton, Ph.D.
ISBN (Online): 978-0-7844-8233-9
Copyright
© 2019 American Society of Civil Engineers.
History
Published online: May 16, 2019
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