Sulphide Creek Falls, Waterfall in North Cascades National Park, Washington, US.

Sulphide Creek Falls drops roughly 2,100 to 2,200 feet from Sulphide Lake on the southeast side of Mount Shuksan into a broad basin, through a narrow, twisting canyon that makes the fall hard to see from below. The main column widens as it descends, and thin streams branch off along the right-hand rock wall.

The sources record no mining history at Sulphide Creek Falls. The name comes from Sulphide Creek, which drains Sulphide Lake at 3,800 ft on Mount Shuksan's southeast side. The falls were documented through topographic surveys of North Cascades National Park, and their drop of roughly 2,100 to 2,200 ft has still not been precisely measured.

The name comes from Sulphide Creek, whose water is fed mainly by the Sulphide and Crystal glaciers above Sulphide Lake. A separate fall on the opposite side of the valley, about half as high and far easier to see, is sometimes called Sulphide Valley Falls; the 1,000-foot cascades above the lake are known informally as Sulphide Basin Falls.

There is no trail to the falls. The nearest path, the Baker River Trail, crosses Sulphide Creek at its confluence with the Baker River; from there, follow the wide, rocky streambed upstream to within about 1 mile (1.6 km) of the base. Thick avalanche brush blocks the final approach, and several fords of a large stream are potentially dangerous.

The water comes from two glaciers, Sulphide and Crystal, whose melt changes the flow dramatically with the seasons. In summer when glacial melting peaks, the waterfall's force becomes especially powerful.