Ryan, I also posted on a FB hiker group and was told the following:
“Yes, Day hiked it Sunday and backpacked it earlier in July. Plenty of water at the stream that’s half of a mile up from the trail from Limber Pine Campground. It was flowing just as good as it was in early July.”
Hope this helps and perhaps I’ll see you at the summit.
Hiked SB Peak on Sunday 8/13. As mentioned, small stream flowing above Limber Pines Bench. Filtered (Sawyer Squeeze) 2 liters of cool spring water on the way back down. Enjoy your hike!