If you are assuming that the Bible is the direct and literal word of God, then yes he has lied to you. The creation and Noachian floods are both demonstrably incorrect.
The reason science corrects theories is because our technology and thus our ability to see deeper into the nature of nature improves our conclusions. Because science is self correcting it becomes more and more accurate.
And when they finally see all the way they'll see the God was right all along. You see, He can see into the future.