Horn is a lot steeper and more clearly defined at 14,000, with a distinct left side and a right side. The locals I was paddling with called the right line “Land of the Giants.”
To be honest, I don't know the exact flow. I've been saying 20,000 cfs because the ranger who checked us in, said that (because of the big snowpack) the plan was to release a steady ~20K for the entire trip duration. That seemed to hold true because we didn't see much evidence of the usual "tides" during the trip. I'd love to go back at low or normal flows to see what it's like in different conditions.