Not really complicated. If the water body is a SMALL impoundment (pond) and a known STOCKED trout stream enters and leaves it figure the impoundment is closed as it is merely a dammed part of the same river. If it is a larger water body and is NOT listed in the Anglers guide as a stocked trout lake it is open.

If you feel it is a "grey" area, ask Encon for a clarification , or stay away till opening day (pun intended ).