Yeah - it was pretty cool!
For those who don't recognize where the photo is... It is the Split Rock swimming hole. Photographed from the bridge, looking to the northwest.
The waterfall location is the lower right corner, and you can see the west side of the "channel" or rock. If you look just left of the small green tree, you can see the small boulder that sits atop the formation.
Here are some more:
From the bridge, looking north
#1 Wave cresting over rock(bridge location is the in dark background)
#2 Same wave continuing to crest over rock. It was so impressive to see the water rushing through, with waves crashing over this rock(the one shown in the original posts photo, located on the west side of the channel, where people sunbathe and picnic)
West Side of bridge, show the water level rose enough to cover parts of meadow and flood into this section