US Army Corps of Engineers
Baltimore District

Regulatory Sourcebook

Official source for permitting policies, guidelines, regulations and procedures of the Baltimore District Regulatory Branch.  

Jurisdictional Waters

Waters of the United States include, but are not limited to waters which are currently used, or were used in the past, or may be susceptible to use in interstate or foreign commerce, including all waters which are subject to the ebb and flow of the tide; all interstate waters including interstate wetlands; all other waters such as intrastate lakes, rivers, streams (including intermittent streams), mudflats, sand flats, wetlands, sloughs, prairie potholes, wet meadows, playa lakes, or natural ponds, the use, degradation or destruction of which could affect interstate or foreign commerce including any such waters; all impoundments of waters otherwise defined as waters of the United States under the definition; tributaries of waters identified above; and the territorial seas.