This popular summer trail off I-90 changes quite a bit during the winter months.
The falls flow year-round, and the icicle formations clinging to the surrounding rock face are absolutely spectacular — well worth the trip.
Access to the area is via a Sno-Park parking lot, which requires a Sno-Park permit. You can purchase one online at the lot and jot down your confirmation number on a piece of paper to display on your dashboard as proof of purchase. There are two parking lots: the upper lot (Lot 1) and the lower lot (Lot 2). The lower lot is larger, closer to the trailhead and has a vault toilet. A short trail descends from the lower lot to the trailhead.
From the trailhead, the path gently ascends along the Snoqualmie River, offering several scenic viewpoints to admire the river and glittering icicles. At around the 1-mile mark, you’ll reach the high point, then begin your descent toward the waterfall. There’s another viewpoint just before you reach the falls to admire the falls.
Be aware that avalanche danger is considerable near the falls. Always check the avalanche forecast at the Northwest Avalanche Center. Because the waterfall basin sits at the bottom of an avalanche chute, hikers are strongly discouraged from entering that area.
Instead, utilize the marked snowshoe route, as well as a snow play area in the campground, for safer winter fun.