A model is presented for the erosional effects in the mid and late Flood that are due to large- and small-scale vertical tectonics of the crust coupled with Flood water movement. Other Flood models are briefly discussed without commenting on their merits or problems. Instead of a problem, all these models indicate a healthy state of Flood geology, according to the principle of multiple working hypotheses. The model is a further development of the Whitcomb-Morris concept using the terminology of Tas Walker. Evidence for great upward vertical tectonics of continents and subsidence of the ocean basins is presented. During this great event, massive evidence of sheet erosion of the continents is ubiquitous in the form of erosional remnants, erosion surfaces, and the long distance transport of resistant clasts. The model is able to explain a number of mysterious phenomena in geomorphology, such as high-elevation erosional remnants, large-scale erosion surfaces, distally-deposited coarse gravel, continental margins, water gaps, pediments, and submarine canyons. The model has significant implications for other models and concepts concerning the Flood.