[_ Old Earth _] Which strata were laid down by the deluge?

[jwu]

not nessiarily , maybe the lakes di not overflow till years later, after the rock soilifyed, the ridge could have been just harder rock for whatever reason..or maybe the lakes overflowed the ridge was creted later either could be true.

Then the colorado river shouldn't be where it is today; its presence falsifies your hypothesis. Once another spillway exists, there is no reason why a second "more difficult" one should form.

a sand box is a lowsy example but wheter is be loose sand and a little bit of water or rock and alot of water the concept still remians.

Not at all - the notion of "short time, lots of water" is falsified by the meandering, the vertical walls and the composition. No matter how much water you use, you're not going to cut through granite and basalt in a short time.

water can erode rock really quickly

As mentioned above, not all types of stone. Sandstone, perhaps, but not granite.

Granite has a hardness of 5.5 - 7 on the Moh scale. 5.5 is about equal to the hardness of a knife blade, 7 equals hardened steel. No matter how much water you use, eroding granite of such hardness takes a very long time.