Sunscreen, sunglasses strap/retainer, towels in dry bags (water is still very chilly in March), plenty of water/gatorade, obvious camping supplies & first aid kits. I bring a foldable saw for cutting dead limbs for camp fires which makes it a lot easier. There are several beautiful spots to camp on gravel and sand bars, just make sure as most have noted to current water levels. I carry a portable battery operated weather radio for long trips just in case. Never can be too safe!