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Good details on section just above the LLR - Lake Lanier Run are at https://georgiawildlife.wordpress.com/2014/05/21/upper-chattahoochee-river-fishing-and-public-access-points/ and its associated/linked map that I copied to upper-chattahoochee-access-points-map.png. Here's a bit more on this section; http://wildwoodoutfitters.com/more/upper-chattahoochee-river-water-trail/.
Great West Point to Riverview video including portage help for the few dams there.
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