(Per US Army Corps): USACE Surveys performed a survey on 15 November of the Delaware River, Edgewater Range and identified a potential obstruction to navigation.
The mass of the object appears to stick up to 38.2’ MLLW, but there are smaller areas that reach up to 31.3’ MLLW. The position of the object is:

Latitude: 40 04.39824 N
Longitude: 074 54.11119 W
Depth: 31.3’ MLLW