I had a dream where Seattle had been nuked the entire night. The entire north half of the city was gone, and people were walking around in the south (or to the south) just in a daze or bewildered. That was last summer july 24, 2004.
Seattle is next to both Lake Washington, Lake Union, and Puget Sound. There are also various other lakes.
Your dream though, might have a personal message from God for you, or it could be in fact a message to America through you from God. For he is good at storytelling (have you read the Bible?

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I am not saying a word about Seattle is the city in your dream, I was just sharing.
God Bless You All,
BlueRiverTributaries