I agree Gog_CA1. We here in California have some FANTASTIC rivers . The older (maybe wiser) I get the more respect I have for the power of mother nature and water, this is NO amusment park ride... its down right dangerous. But there is beauty in the poished bolders, cascading waterfalls, swirling eddy's and haystack waves... do you have a render for us?

"Dance like nobody's watching; love like you've never been hurt. Sing like nobody's listening; live like it's heaven on earth."
  --  Mark Twain --