There is canoe trail, in the interior lagoons of Presque Isle State Park PA. No gas engines are allowed, travel is bidirectional, like a bike path most travelers make a two way trip on the same path.
While I was paddling there this summer, I noticed that the water plants a few feet under the surface all pointed in the same direction, indicating a current. This was consistent for multiple visits this summer. The current is nearly insignificant from a paddling perspective but it does impact the plant life.
The canoe trail is indicated in the map below by a red line. As I recall the current was flowing from west to east (left to right). These lagoons are interconnected, on a peninsula, communicating with sheltered bays, inside of a sheltered bay. There are no elevated locations that might be the source of artesian wells.
What causes the current in the interior lagoons of Presque Isle State Park PA?
Details about the area: