The Coast Guard will enforce a security zone along the Potomac and Anacostia Rivers and adjacent waters at Washington, DC to protect government officials, mitigate potential terrorist acts, and enhance public and maritime safety and security in the days leading up to and after the 60th Presidential Inauguration. During the enforcement period, entry into or remaining within the security zone is prohibited unless authorized by the Captain of the Port or his designated representative.
Source: Federal Register USCG
Link: Security Zone; Potomac River and Anacostia River, and Adjacent Waters; Washington, DC