Bricker, SB, CG Clement, DE Pirhalla, SP Orlando, and DRG Farrow. 1999. National Estuarine Eutrophication Assessment: Impacts of Nutrient Enrichment in the Nation’s Estuaries. NOAA, National Ocean Service, Special Projects Office, and National Centers for Coastal Ocean Science, Silver Spring, MD. 71 pp.

Kopp, BS, and HA Neckles. 2009. A protocol for monitoring nutrient enrichment in estuaries in coastal parks of the National Park Service Northeast Region. Natural Resources Report NPS/NCBN/NRR—2009/110. National Park Service, Fort Collins, Colorado.
US EPA. 2001. National Coastal Assessment: Field Operations Manual. US Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Gulf Ecology Division, Gulf Breeze, FL. EPA 620/R-01/003.

US EPA: 2003. Ambient water quality criteria for dissolved oxygen, water clarity, and chlorophyll a for the Chesapeake Bay and its tidal tributaries, EPA-903/R-03/002, US Environmental Protection Agency, Region III Chesapeake Bay Program Office, Annapolis, MD; Region III Water Protection Div., Philadelphia, PA, and Office Water, Office of Science and Technology, Washington, DC