Pathological Overfitness: The Texas 'Insta-Gorge' Before and After

This flood is getting so much press (e.g., http://www.scientificamerican.com/article.cfm?id=canyon-lake-flood) that I thought that some photos were in order. It was certainly a screamer...and interesting that it spilled into what looks like a minor drainage course in a classic case of pathological overfitness. At first glance, looks like we can learn a bit more about bedrock canyon morphology, etc. Wonder if any real potholes were created in this single event? Does appear that there was some inner-gorge morphology carved out.

Pretty sweet.