Once you get below the Wilson Bridge, the river broadens nicely. On your port side is Smoot's cove, the location for National Harbor. Many boaters are tempted to aim directly at National Harbor from the bridge. They soon find a discontinued spoil area where they will find themselves firmly aground. To navigate into National Harbor, one must go past buoy 90 and then pick up the channel markers provided by National Harbor.
On your starboard side as you are heading down river, there is once again a large tidal mud flat located in front of Hunting Towers and Porto Vecchio. More than one boater has been fooled by the sight of docks in front of Porto Vecchio and thought there to be deep water. Unless you are in a canoe or kayak you cannot get close to the docks.
Slightly further downriver on your starboard side is Belle Haven Marina. The best way to approach the Marina is to go to buoy 87 and then steer a compass heading of 320 into the Marina. Follow this heading until you past two private markers on your starboard side.