Thanks for your work! I'd love to be there to help, but unfortunately, I'm on the other side of the country right now @ NOC. Here are my suggestions for improvement based on what I saw (and paddled) at 250 CFS. I see 2 issues to be addressed:
1. The slab of water falling into the pool is at too flat of an angle, so lots of it is just continuing downstream fast without making a foam pile (kinda bouncing off the pool, rather than dropping into it). If you could steepen the drop slabs at all (even 15 degrees), that would help...and the drop itself doesn't likely need to be quite as high as it is.
2. The bigger problem is that the water that IS falling into the pool is dispersing in every direction, rather than rebounding off the bottom and making a useable foam pile. You can see this by the bubbles boiling up all over the place (even 20+ feet downstream), rather than just behind the inflow in a good, raised foam pile. All the energy of the inflowing water is, in essence, lost because the pool is simply much too deep to allow a good foam pile to form. At 250 cfs, I couldn't touch the bottom of the pool right behind the pourover with my paddle reaching as deep as it would go. Ideally, the pool depth at that flow would need to be only 4 feet or so. That way it' deep enough to do tricks without hitting often, but the water falling in will rebound back up and create a good foam pile shape to give a more retentive feature. We also need that rising rebound water to raise the boat into the air as it does loops and other hole tricks. SO back-filling the pool with large enough rocks to make it less deep (especially where the water is falling in) would also help a ton.
Thanks again for getting on this so quickly! Wish I could be there!!!
Originally Posted by ScottMS2O
S2O will begin making changes to the October Hole tomorrow morning at 8am (Monday, April 15th). Anyone who is interested in participating in the re-design is more than welcome to join us. In fact, your input would be much appreciated. Please come prepared to test drive the wave as changes are made.
S2O Design and Engineering