My grandmother, born in the late 1800s, taught us this version. Her ancestors were from Germany & Austria. My father remembered their Christmas tree with actual candles on it.
The wording seems to closely match GUEST.Chief Ron

Beautiful stream, so clear and blue,
a radiant dream, we sing to you,
The sky seem to glow, the stream so bright,
with you as you’re go…ing, reflects the light,
and gay is the song, and gay the song,
you carry along, you bare along,
by shores that you lave, with your wave,
on your way to join the sea.