Fall River is on and off. The fish seem to move around a lot, so places you might have seen them last week doesn’t mean they will be there today. It’s weird but I suspect a few things: Otters, fishing pressure and fish seeking out food.
I would love to see Fall River go to a C&R regulation as I know people are going there and whacking some of those big fish.

Afternoon hatches of BWO, Midges, Little Black Stones and a few Caddis are all on the menu.
Nymphs and Streamers are really solid bets, especially Zebra Midges, Tungsten Micro Mayflies, Tungsten Perdigons and Frenchies.