The Fall River is fishing well, but it is busy most days from 9 to 3 or 4, of course it is mostly stocked trout but they are happily feeding on hatches of midges, BWO’s, PMD’s, Caddis, plus terrestrials like Ants and Beetles and even Grasshoppers. 
Eggs, Rainbow Warrior Jig, Yellow Napolean’s, Mini Gulp, Micro Leeches and Squirrel Jig’s will create plenty of opportunity for you from sunup to sun down. At sundown add an Orange Soft Hackle and Rusty Spinners. Consider an early morning or after dinner trip too. And a reminder that access to the hatchery closes after 7 PM. I believe it opens at 7 AM but it might be 8. Double check the sign at entry.