The song has 2 chords through the whole thing. 
Capo 1
A and D

I prefer a better sound so instead, go for:
A/Ab and D/C#

You can do A/Ab as [x 0 2 1 2 0] but try [5 7 6 6 0 0]

And D/C# as [x x 0 2 2 2] but try [x 5 7 6 7 0] 


A/Ab
i've been going down

down into the river baby
        
listen to the sound
                           D/C#  
it's something only god knows
A/Ab
you figure it out, i can't stay
               
water's in the clouds
                         D/C#
is my life about to change?
A/Ab          D/C#
who knows, who cares

A/Ab-D/C#

so we took a van down to colorado
where we ran into the dead
i took you by the hand
know that even with your doubts, it's ok
take into account that it's not about to change
who knows, who cares

you could let it down
jump into the river baby
easy as it sounds
it's never quite as easily done
the current has us now, it's ok
take into account that it's all about to change
who knows, who cares