There isn't a specific lake in Pennsylvania that is precisely at 38 degrees North latitude.

Here's why:

* Pennsylvania's Latitude: Pennsylvania's latitude ranges from approximately 40.5° N to 42° N.

* 38° N: 38° N latitude falls well below the southernmost point of Pennsylvania.

If you are looking for a lake in a nearby state, you could be thinking of Lake Erie, which lies to the north of Pennsylvania.

Let me know if you have any other questions.