Canyon carved in just three days in Texas flood: Insight into ancient flood events on Earth and Mars

ScienceDaily (2010-06-20) -- In the summer of 2002, a week of heavy rains in Central Texas caused Canyon Lake -- the reservoir of the Canyon Dam -- to flood over its spillway and down the Guadalupe River Valley in a planned diversion to save the dam from catastrophic failure. The flood excavated a 2.2-kilometer-long, 7-meter-deep canyon in the bedrock. According to a new analysis, that canyon formed in just three days.