Sylvia Falls is a 43-foot, single-drop waterfall on Stevens Creek in Stevens Canyon. You see it across a narrow gorge from the Wonderland Trail; this is a hike-in view, not a roadside stop. Reach it with a 1.4-mile hike from where the Wonderland Trail crosses upper Stevens Canyon Road, or a 3.3-mile hike from Box Canyon trailhead. The longer Stevens Creek route reaches both Sylvia and Martha Falls over about 8 miles round trip, with 1,675 feet of climbing.
If you start at Stevens Creek, the trailhead lot has plumbed restrooms, a drinking fountain, a few picnic tables and room for about 30 cars. Those facilities are at the lot, not at the falls.