Hiyaa!! Yes, I absolutely love this song. I looked for the chords here, but 
couldn't find them, so I worked it out myself. It was pretty easy. Enjoy - I think 
it's pretty accurate (not sure about the lyrics, though, because I only copied 
those :). Listen to the song for the strumming pattern.

Capo 2

         F                    Am
I'm so stubborn, it's how I got here
        F               Am
So alone, feels like forever
         F                     Am
Wanna swim away and breath the open air
                 F    C             Dm
But I feel so afraid, then I hear you say

     Am           G
Hang on when the water is rising
     F            Dm
Hang on when the waves are crashing
     Am    G               F    Dm
Hang on, just don't ever let go

        F                 Am
I'm so hungry, how can I stay here?
F                    Am
Starving for what I hold so dear
        F                  Am
Like a hurricane it takes everything from me
F  C              Dm
Wake me from this dream

     Am           G
Hang on when the water is rising
     F               Dm
Hang on when the waves are crashing
     Am   G               F   Dm
Hang on, just don't ever let go

     Am           G
Hang on when you are barely breathing
     F                 Dm
Hang on when your heart's still beating
     Am   G                 F...
Hang on, just don't ever let go

F           Am
Three days, thirty years
F            Am
So hopeless, doesn't matter
F          Am                  C
Don't say it's too late if you blink your eyes
    Dm....             Dm...          Am G F Dm
The sun is rising, the sun is rising, oh

     Am           G
Hang on when the water is rising
     F             Dm
Hang on when the waves are crashing
     Am  G               F      Dm
Hang on, just don't ever let go

     Am         G
Hang on when you're barely breathing
     F                 Dm
Hang on when your heart's still beating
     Am        G            F....F...
Hang on, just don't ever let go 
F...