The way Genesis 8:1 is written would make you think that God forgot about them but be assured He did not. God knew where they were and what they were doing and thinking. This is what I am thinking. The rain from above and the waters gushing up from below kicked up a lot of debris and mud. Since God does not change the rules of nature, He knew it would take time for all of it to settle down to the bottom of the waters. And the ark may not have arrived yet over the place that God planned for it to settle.
