With the exception of a mile of river below Porcupine Dam, all of the Little Bear River above Hyrum Dam is through private property. This does not mean it is not accessible, it just means you need to know some landowners. Some will let you fish and some won't.
This is a great little stream to fish, because it doesn't get much pressure and the fish are not lure wise. There are some good fish in there too.
There is a good population of browns in the section of public ground below the dam. The water level will be quite low during winter though as they shut the gates after irrigation season. Right now there is a pretty good stream. I don't know just when they will shut it down.