Access for the Powerhouse Run is available at the Puget Sound Energy Powerhouse on river right below Snoqualmie Falls as a condition of the hydropower license. It is located at USGS river mile 40.0. It is freely available to the public during the day. At mile 24.1 on Highway 202 (just east of Fall City) turn onto 372nd St. Follow this 0.2 miles to the junction with SE Fish Hatchery Rd. Follow SE Fish Hatchery Rd. east 0.5 miles along the river and park in the lot outside the powerhouse gate. Hike your boat down to the powerhouse.
A trail behind the powerhouse leads to a boardwalk and a trail to access the Training Pool and the best play wave on the run; in 2002 FERC's safety office ordered the utility to close this access, and the boardwalk has since been reconstructed making it more difficult to get to the river. FERC instead has ordered the utility to redirect paddlers to the downstream side of the Powerhouse for 'safety' reasons which unfortunately cuts off some of the best instructional features on the run. In the past you could also easily access the pool at the base of the falls and paddle the most challenging rapid from this pool to the Powerhouse.