Did the Great Flood in the Bible actually happen?

Jessa • Unofficial nomad. Aspiring midwife. Fierce lover of naps.
The Great Flood was recorded in Genesis in the Bible. It is said that God flooded the Earth to destroy all the wickedness that inhabited it, He had mercy on only Noah's family who eventually repopulated the Earth after surviving the flood by building an arc. Whether or not you are a Christian, do you believe this worldwide flood actually happened? What evidence have you found to support your belief? Are there even grounds for belief, or is this more of a matter-of-fact situation?
To those of you who do believe in the Flood, do you believe God will destroy His creation again? 

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