Following the right riverbank back to the launch I followed a small stream which turned out to be Horsehead Run which originates from Horsehead Spring.
There were a number of home and docks along the run, most of them pretty trashy looking. Some of the place had boats of all descriptions and most were in a state of disrepair and/or full of water.
See these two large power boats I was very glad I was there paddling on a brisk weekday. The air boat (right) would have been a particular drag to encounter as they are incredibly noisy.