​Notice is hereby given of the establishment of a temporary security zone on the waters of the Potomac and Anacostia Rivers, and adjacent waters, in Washington, DC, under the Ports and Waterways Safety Act (PWSA) 46 United States Code (U.S.C.) 70116, which allows the Coast Guard to take actions, including the establishment of security and safety zones, to prevent or respond to acts of terrorism against individuals, vessels or public or commercial structures. SEE ATTACHMENT FOR MORE INFORMATION