On August 29, a 3-ton ground shaker shook a 6-foot high model levee in the
Delta as hard as the 1989 Loma Prieta Quake would have done, and the levee rolled and tossed but settled back into place, surviving intact.
Researchers noted that the model was dry on both sides, unlike most Delta levees, and that the levee might sink in the coming days. However, the earthquake simulation, designed and conducted by engineering researchers from UCLA, showed that peat soils in the Delta are much more resilient than many people thought.