In 2001 EPA requested that a Science Advisory Board (SAB) conduct an evaluation of the complex scientific and technical issues affecting the causes, location, magnitude, and duration of the hypoxic zone in the Northern Gulf of Mexico, as well as the priority and feasibility of management and control options in the Mississippi River Basin and Gulf to reduce it. The SAB Hypoxia Panel reviewed background reports and research efforts (including research discussed through the four science symposia) and sought public comments on the issue. The result of these efforts was the 2007 Science Advisory Board Report on Gulf Hypoxia.

• Hypoxia in the Northern Gulf of Mexico: An Update by the EPA Science Advisory Board (PDF)(333 pp, 5 MB, December 2007, EPA-SAB-08-003)