i wondered more about if you walk up to your truck NH side with fish caught on a boarder pond you wouldn't have a nh license and also on the wrong side of the lake .
I think this is pretty clear, as long as you're on one of these bodies of water.
Fishing licenses issued to any person by either this State or New Hampshire shall be recognized when used on any lake or pond which is partly in both States of Maine and New Hampshire.Waters Affected by this SectionBalch and Stump Ponds, Acton, Maine and Wakefield, New Hampshire.
Great East Lake, Acton, Maine and Wakefield, New Hampshire.
Horn Pond, Acton, Maine and Wakefield, New Hampshire. Signs posted at the downstream extent of the Great East Dam Outlet Canal denote the boundary between Horn Pond and the Salmon Falls River.
Kimball Pond, Lower, Fryeburg, Maine and Chatham, New Hampshire.
Milton Pond, Lebanon, Maine and Milton, New Hampshire.
Northeast Pond, Acton and Lebanon, Maine and Milton New Hampshire.
Province Lake, Parsonfield, Maine and Effingham/Wakefield, New Hampshire.
Salmon Falls River, Acton, Lebanon, Berwick, and South Berwick, Maine, and Milton, Rochester, Somersworth, and Rollinsford, New Hampshire. Included is the upper reach of the Salmon Falls River beginning at the outlet dam of Great East Lake, also known as State Line Canal, to a point downstream marked by signage indicating the northern terminus of Horn Pond.
Spaulding Pond, Lebanon, Maine and Milton, New Hampshire.
Townhouse Pond, Lebanon, Maine and Milton, New Hampshire.
Umbagog Lake, Upton, Maine and Errol/ Cambridge, New Hampshire. Waters of Umbagog Lake include the waters of the Androscoggin River downstream to the Errol Dam, the waters of the Magalloway River upstream to coordinates 44.795602°-071.062732° to 44.795602°- 071.061793° using WGS84 map datum, and the waters of the Rapid River upstream to the red markers at Cedar Stump in the State of Maine.