We're in a pretty severe drought in the eastern Ozarks. About 11-12" below normal, and recorded the driest spring on record. That said, g2d is correct. The Eleven Point will have plenty of water from Greer Access down. Never been to Arkansas on the river, but almost that far. You will see few people through the week, especially below Riverton.
Southwest of us, Arkansas has been getting some rain, and should be getting more. The Buffalo may have enough water when you're ready. Here's a link so you can check before you leave. If the Buff's too low, a few hours north and you can paddle the Eleven Point as an alternate plan.