The river right channel is a class III rapid. Standard line is starting from river left, then move to river right after passing the hole against river right bank about half way through the rapid. The bottom drop has a sticky hole on the river left named Dumpster Hole. Brave souls play there and sometimes result in broken equipment, body parts, and spirits. When the dam is releasing above 3000 cfs, the river right side of the bottom drop forms a dynamic wave. There are alternate lines through the river right channel that involves catching multiple micro eddies and one large eddy.
The center channel offers two basic lines. Most of the water flows through the main center channel. Start in the center angle left following the water, then heads back right to punch through a 2ft ledge, after which ride the fast current and hit the bottom wave.
The easiest line through the Rapid is on the river left. From the pool above, look for the left most slot that forms by two rocks. This slot is just to the right of the the cove where one can get out to scout and portgage. Line up for the slot and paddle straight through and you'll end up on the bottom on river left. No manuevers required.
The bottom wave in the center channle offers endless surfing. The wave gets steeper the lower the lake level is. The 2ft ledge near the top of the center channel also has some potential play spots but eddy access are difficult and head banging potential are high.
According to the locals, when the big release comes through (20,000+ cfs), big and dynamic waves forms for a few hours until the lake level catches up. Once the rapid disappears, the only playspot left is the eddy lines at the 158/301 bridge.