Where do those who say Noah's flood was an actual event say the water went? According to those who say Noah's flood was an actual global event, Where did the flood waters go when they subsided?  Myself and others have researched this and could not answer it honestly and completely. We have thought that it went to the middle of the earth but there is only metal according to research.
Creationists who believe the flood was a real global event say the water is still here, in the earth's oceans.

The oceans are much deeper than the mountains of earth are high, and they cover a much greater proportion of the earth's surface. Some have estimated that if the earth's surface was flattened the oceans' waters would cover the land to a depth of 2.7km.

Creationists see passages like Psalm 104:5-9 as teaching that during the flood there was significant tectonic activity, as the mountains rose and valleys sank, giving us the continents we see today, and 'hiding' the flood waters in the oceans.


  Ps 104:5 He established the earth on its foundations;
  it will never be shaken.
  6 You covered it with the deep
  as if it were a garment;
  the water stood above the mountains.
  7 At your rebuke the water fled;
  at the sound of your thunder they hurried away—
  8 mountains rose and valleys sank—
  to the place you established for them.
  9 You set a boundary they cannot cross;
  they will never cover the earth again.


Passages like these are ambiguous, and could be read as referring either to the original creation of land in Genesis 1:9-10, or to the aftermath of Noah's flood. In the case of Psalm 104 I think verse 9 does indicate that, at least by the end of this stanza, it is referring to the flood, for it speaks of God's promise not to flood the earth again, a promise that God had not made before the flood. I think the creation-flood ambiguity is deliberate - the story of Noah is a story of re-creation: a new earth, a new set of life (preserved on the ark), and a new family to repopulate the earth.