SWPA SouthWest Power Administration has been running a fair amount of water with the current temperatures in the 90's. SWPA has been usually starting sometime around 3pm in the afternoon and running till 7 pm or later. Always check the USACE Little Rock app before heading out.
With the temperature's in the 90's and somewhat low flows during the heat of the day, try not to overplay the fish and quickly release them back to the river. The fishing has been best early mornings and later in the day in the evening. Try fishing the deep holes around the moss beds and the oxygenated shoals and plunge pools.
I've been running a nymph rig set between 3ft to 6ft deep depending on the depths of the river and drift fishing Pink San Juan worms, Duracell jigs, and Pheasant tails. If the water completely falls out I'll put a midge dropper below the pheasant tail or the Duracell jig. The bite has been good on the entire river. I think the SWPA will continue to run the current generation schedule while we have hot day time temperatures and power demand is high.