It is doubtful that you will find any wording which would be indicative of a local flood or hints thereof. This however does not mean that local flooding is not what occurred. What you need to remember is that the ancient middle-eastern view of "the whole world" was very limited. It is not as if these people visited, knew about, or even had legends of north and south America for example. So if these continents never flooded, would they have ever known?
The fact is, so long as flooding occurred as far as the eye could see in all directions and for as long as any of these Hebrew people traveled, then it appeared to them that the whole world was flooded. This is not them lying or getting anything wrong per se, it is simply that their concept of the universe was very limited. For example, this would have been their view of their universe:
This image is particularly helpful when considering the imagery used in the flood account in Genesis 7:11 when the author says "the fountains of the great deep burst open, and the floodgates of the sky were opened."
To me, this evokes imagery similar to that which was seen in the Tsunami in Japan. Videos I watch this and think that this certainly looks like water is bubbling up from fountains of the deep.
Furthermore, a Tsunami is certainly capable of generating this kind of devastation. For example, in 365 AD in Alexandria, there was a tsunami that deposited boats over two miles inland. In 1607, in Bristol Channel, England there was a tsunami which flooded over 200 square miles of land. This could certainly seem like the whole earth.
The fact of the matter is that science indicates that even if the ice caps melted completely, sea levels would only rise about 200 feet - not enough to cover the whole earth. This means that a bunch of water would have to have come from somewhere and have disappeared to somewhere without leaving any evidence of this activity. God is God and he certainly could do this, the question is would he create a flood and then leave no archaeological and paleontologist evidence of this behind?
It is also important to remember that The Bible is not a science text book and it was not written with the goal of journalistic accuracy. It is a narrative written with the goal of theological accuracy. Should the flood have been a local one, the writer of Genesis most certainly believed it was a global one. We should therefore read this story not for what it tells us about archaeology and paleontology, but for what it tells us about Yahewh and His relationship to His people - in this regard it will always be 100% true, accurate, inerrant and infallible. In this vein, even if the original event was a local flood, it is entirely possible that the details were exaggerated in order to bring glory to God. He is certainly powerful enough and worthy enough to be worshiped in this way and giving him this glory and honor is in no way lying or inaccurate.
This flooding doesn't have to be either/or. It can be both/and.