I think this is so cool!
“On Saturday, January 19, 2013, The Nature Conservancy of Oklahoma captured unique footage of the return of water to the Canadian River at the Four Canyon Preserve in Ellis County, OK.
The strange bubbling sound audible during portions of the video was generated by air trapped in the sandy river bed. Thousands of little ‘geysers’ and sand fountains appeared along the leading edge of the water.
The water advanced about 500 yards downstream overnight before freezing. We arrived the next morning just as things were thawing out and beginning to move again.
This is apparently the result of an upstream rain event on January 10. The river at the preserve had been dry since May 2012 at Four Corner Reserve.”