Season and regulations
Heron Lake is open all year under New Mexico's cold-water rules: the trout and salmon limit is 5 per day and 10 in possession in any combination, with no more than 2 lake trout and 2 cutthroat included. The lake-specific rules restrict boats to trolling speeds, close Heron Lake and Willow Creek to kokanee fishing and possession from October 1 through November 10, and open the Special Kokanee Salmon Snagging Season from November 11 through December 31, when kokanee are the only species that may be snagged and the limit is 12 per day, 24 in possession.
A New Mexico fishing license is required and the state park charges day-use and camping fees. Check the current New Mexico Department of Game and Fish Fishing Rules and Information booklet before your trip.