I'm a novice, but I saw Daryl Hall and Micheal Fitzpatrick sing this on his web 
show. I think it's pretty close.

Watch the video and figure the strums. You advanced folks post alternatives. 
Corrections welcome!

Capo 7th Fret.

G
Perkiomen, somewhat cloudy
G                               Am
Indian water, slipping down a mountain stream
D
You know what I mean?

G
Painted lady, touch the water
G                             Am
Forest standing sentry over mossy wall
D
She comes when you call

Chorus:

Bm                                       Em
Outside you've got me slipping like a honey slide

Bm
I'll take a ride with a- willow weeping

Em
Tears of strength into the stream

F                   Fm
And the waterfall is a tinsel wall

G
Perkiomen, somewhat cloudy
G                                  Am
Indian water, slipping down a mountain stream
D
You know what I mean?

Bm                                      Em
Outside you've got me slipping like a honey slide
Bm                          
I'll take a ride with a willow weeping
Em
Tears and leaves into the stream
F                       Fm
And the waterfall is a tinsel wall
G
Perkiomen, somewhat cloudy
G                                Am
Indian water slipping down a mountain stream
D                       G
You know what I mean, I feel

Perkiomen