Well, not to argue but when I was there taking these pictures in 2006 it absolutely was on the James river. I don't know what else to say.
The pics are the foundations of what the map refers to as the "4th statehouse" & you can see the James River & it's ferry in the background. The foundations are literally right on the bank of the river as is the reconstructred stockade for the fort. The archaelogicalo dig in thr ruins of the governors house is only about 25 yards from the bank as well so this is the correct site for the Jamestown colony.
Allan Quatermain: “Automatic rifles. Who in God's name has automatic rifles”?
Elderly Hunter: “That's dashed unsporting. Probably Belgium.”