The [trout] season is changing
Over the past decade or so, fishing regulations have evolved. The “closed season” for trout is no longer as ironclad as it used to be, though there are regulations that need to be paid attention to as we move into the latter portion of the year. Some waters are closed. Some remain open. Some, well, I can’t really tell sometimes.
Regardless, a game warden may not be all that sympathetic when you claim ignorance. Here are a few links to the Vermont and New Hampshire regulations so you can brush up on your understanding of them and any special rules that may apply to your favorite haunt.
They also have a handy Online Tool