In the six hundredth year of Noah's life, on the seventeenth day of the second month-on that day all the springs of the great deep burst forth, and the floodgates of the heavens were opened. And rain fell on the earth forty days and forty nights. Genesis 7:11-12
The waters flooded the earth for a hundred and fifty days. Genesis 7:24
I've read Genesis many times. The only parts that some people don't believe is the first 11 chapters. The rest is accepted as factual and historic. The first 11 chapters are only suspect because of the belief that the world is millions of years old.
However, the world is only thought to be millions of years old if you accept the fossil record as a record of millions of years of evolution. Creationist believe that the fossil record is a record of a worldwide flood.
Floods do a lot of damage. A worldwide flood would bury all the animals not on the ark. At the time of the flood, the Bible says that the fountains of the deep burst open. This means that water and mud spewed forcefully out of the ground. Creationists believe that this action is what caused the mid-Atlantic ridge and the shapes of the continents. The water whooshing back and forth with the tides for a year would create layers of sediment of different densities.
Try this, get a mayonnaise jar and fill it with teaspoons full of dirt from various places in your town till it's almost half full. Then fill it to the top with water. Put the lid on and shake it up good and set it somewhere for a while. Gradually, the different densities of dirt will settle into layers. This is why the sides of a canyon show layers. Animals that just die will rot or be eaten. An animal needs to be covered quickly to fossilize; the minerals replacing the live bone matter. Therefore, the fossil record really is a record of a massive world wide flood.
I'm not concerned that the ark hasn't been found. Maybe Noah used it to build houses or for fire wood. Everything was buried under a bunch of mud. It would have been hard to go look for building materials and fire wood.
The ark would have been 4400 years old right now. Around here, there are wooden houses less than a hundred years old that are falling apart and tipping over flat. I'm not worried that a 4400 year old boat isn't still around.