The water area of the Five Mile River beginning at a point on the southeast shore of Butler Island at latitude 41°03′27.5″ N., longitude 73°26′52″ W.; thence following the shoreline northerly along the westerly side of Five Mile River to the highway bridge at Route 136 (White Bridge); thence easterly along the southerly side of the highway bridge to the easterly side of Five Mile River; thence following the shoreline southerly along the easterly side of Five Mile River to a point on the southwest shore at Rowayton at latitude 41°03′30″ N., longitude 73°26′47″ W., thence 242° to the point of beginning, except those areas within the designated project channel as shown by dotted lines on the Five Mile River on Chart No. 12368 (formerly C and GS Chart No. 221) issued by National Oceanic and Atmospheric Administration, U.S. Department of Commerce.