Here's a graphic I made up that illustrates my concerns... (and I apologize for the size of this). The models are projecting the storm to arrive with a fairly steep "entry angle" - maybe driving due NW into the coast. That would forces many of the tributaries backward... causing major flooding.
This graphic is based on the latest European model run since it has been "most right' so far. If that turns out to be correct, then all waterways between Washington and Richmond will be impacted, though the area near King George, VA and SE from there could be the hardest hit.
But use this graphic as a guide -- as I say, the exact track is still unknown, plus it's going to be a large storm: Delaware Bay could very well get this instead with only a modest change in either the approach angle OR the timing of the NW turn... a difference in a couple of hours would change the landfall by 150 miles.
We’re in Chesapeake VA just to the west of the red arrow in the graphic. However, it appears the path has changed and this thing is slowly making its way around us, projected to make landfall further north around New Jersey. I’m grateful to God for that and pray for protection on those where it does make landfall