Likely less than 100 cfs ... Likely way too low to boat. (Please use "Reports" to help define/refine ranges!)
Most likely very low. Must be confirmed by visual inspection.
Shortly after the shooting range, water picks up speed, with a few boulder bed rapids to boof or avoid. You'll start to see branches hanging low (almost into the water) on river left.
The river splits to the right (maybe 1/5 of the flow going to the right) just before a rock outcropping on the right. This constricts the flow and has about 10' of gradient over 30', creating the first wave/hole (depending on the level) where you should see a smiley face shaped foam pile (from surfers view) and possibly 6-9 pyramid waves after the foam pile (depending on flows). It's surfable at many flows, but a medium flow seems to be best for this wave.
You can catch the Oyster Wave on the fly if you paddle hard upstream and catch the tallest section of the foam pile. Eddy service from both sides allow you to re-attain the surf as many times as you want, making this a popular location when the creek is running! A great wide trough allows you to work back and forth, spin, loop (only seen the loop done here once!) and get really good play if you watch out for 'the Brown Pearl'!
The Brown Pearl is a section of the Oyster Wave about 3/4 to the rock outcropping on surfers left. You'll notice the river wants to pearl over and push your bow down. Knowing it's there and working with it, your fine, but if you aren't paying attention it will end your surf session and give the next boater in line their turn at the wave!
If you do get pushed out, you can surf the first few pyramid waves (at the right levels), but they aren't near as fun. You're better off getting back in line for your next go at the Oyster. Both eddy's are very long, so unless you come out of your boat, you should be able to get back to one or the other. The easiest side to drop into the wave is river left, as it's a straight forward few paddle strokes to drop into the wave in control and surf until your content. Tree roots sticking out and rocks to hold onto help you keep your place in line.
The river right eddy can also get you into the wave, but you will have to paddle hard and not get pushed out by the Pearl in the wave (which would be about 1/4 of the way in when you drop in from river right), and which will be between the drop in and the best surf section of the wave (the river left side of the wave to the Brown Pearl).