The chords shown above are for the B part/chorus - "Just One great River .." (which may be repeated after the "How come you shut me out" verse)and "Lonely Northen Rivers .."

The verse chords are just like the last part of that, repeated with an optional D between 2nd and 3rd lines -
G E / Am D7 G (D); G E / Am D7 G

I'm not sure about the first D in the chorus - I sort of remember it as a 4th- but its been long time since I played it and I think I did it in a different key anyway - Am and C probably