Dawn to dusk
30 mins before official sunrise to 30 mins aftet official sunset
It has been several years since I camped and fished there, however when we did with the boy scouts they would always let us fish the entire time we were in the park whether it was closed or not. You just have to follow the state fishing regulations and possession limits. But to be sure I would check with the ranger who works at the park daily.
Thanks! Your answer is awaiting moderation.