What I'm trying to do is to counter the simplistic view of a global flood. Somehow its OK for TE to have complex historical views of how things formed, with variations for each site, but YECs must reduce their view of the flood to unrealistic conformity over the whole planet.
A modern local flood from a single river source is a complicated thing. It has areas of high turbulence, and low turbulence. These areas may change over time -- in other words a place that was roaring away at one time may be quiescent at others.
The force, direction, temperature, density, dissolved solids, depth of water, on and on, of the water and the currents in the water in a larger event can be expected to have a greater degree of variation for a larger area.
To put down continent size deposits, such as some of the huge Paleozoic and Mesozoic sedimentary formations, requires incredibly huge volumes of water over a very large area.
It is to be expected that the force, turbulence, erosion or deposition of solids, on and on, will vary both over the scope of the area, and over time for a given location. This is not a secondary corrolary - it is a direct prediction of a large scale flood.
Using the YEC model, when one looks at the grand canyon, for example, we see layers representing different conditions and time, etc., and then we see a cutting event. Given the sharpness of the walls, it appears the cutting event is consistent with a rapid water flow while the sediments were still relatively soft. One reasonable explanation is that of a trapped inland see which found a path to the ocean and drained during the time fairly soon after the main flood.
For one possible more detailed model of the formation of the canyon, please see
http://icr.org/research/index/researchp_sa_r02/