[TXnMA]

"Run the water on a fresh pad and watch a miniature grand canyon form before your eyes. It happens every time perfectly."

On a uniformly-inundated surface with no constraint on the direction(s) of drainage? Bravo Sierra.

If you are referring to the Flood, you have it backward. Water didn't run "on", it ran "OFF".

Provide a link to a video of that experiment.

Never happened.

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If the Flood covered the whole earth, and then receded, Why is the Grand Canyon essentially unique?

[editor-surveyor]

I’ll provide U with consideration for your ignorance, but nothing else.

What ran was a huge basin of trapped water from the “flood” released by some large siesmic activity. Sorry that your cognition is so limited - Shame!