FULL USGS VIDEO HERE:
I gave a talk at the PAGES 2017 meeting about this:
Why do natural and man-made dams quickly collapse when the water level exceeds the height of the barrier, rather than just allowing the water to gradually overflow?
In this dam-breach experiment, a 1-m deep overtopping pond triggers a small flood by gradually eroding the compacted-sand barrier. By USGS, Oregon (2012-06-13).The lake behind the barrier is 23.7 m2 in area (not 10 as wrongly printed in the video).
Logan, M., and Iverson, R.M., 2007, revised 2013, Video documentation of experiments at the USGS debris-flow flume 1992–2006 (amended to include 2007–2013): U.S. Geological Survey Open-File Report 2007–1315 v. 1.3., http://pubs.usgs.gov/of/2007/1315/.
Walder, J.S., Iverson, R.M., Godt, J.W., Logan, M., Solovitz, S.A., 2015. Controls on the breach geometry and flood hydrograph during overtopping of noncohesive earthen dams: DAM-BREACH HYDRAULICS AND HYDROGRAPHS. Water Resour. Res. n/a–n/a. doi:10.1002/2014WR016620
Garcia-Castellanos, D., J. O’Connor, 2018. Outburst floods provide erodability estimates consistent with long-term landscape evolution. Scientific Reports. 8:10573. Doi:10.1038/s41598-018-28981-y [open access] https://www.nature.com/articles/s41598-018-28981-y
Video Ownership: USGS, published under FOIA: