Stanley wave is a highly level-dependent green wave that offers a clean, carving ride for river surfers when the water drops below 0.6 meters. The wave forms in the middle where the dam has been breached. Good Eddy service. Be careful navigating it due to shallow water and exposed metal reinforcement spikes embedded in the breached structure. This is best surfed with a SUP or high volume river board. Surf at your own risk and avoid leashes.