Weeks Falls

Weeks Falls is a waterfall in King County featuring multiple drops along the South Fork of the Snoqualmie River. Water cascades over steep terrain creating layers of falling water and white spray throughout the descent.

A hydro facility upstream diverts much of the river water and changes the natural water flow. This alteration shapes how the falls appear today.

Local residents monitor seasonal changes at Weeks Falls, documenting water level variations through photographs and measurements throughout the different months.

Access requires taking Interstate 90 to exit 38 and then following a gravel path. Wear sturdy shoes since the ground can be slippery, especially after rain.

The waterfall maintains a consistent 45-degree pitch across its 300-foot run, creating specific patterns in water flow throughout the segmented cascade formation.

Location: King County

Part of: Snoqualmie River

GPS coordinates: 47.43320,-121.64500

Latest update: December 14, 2025 13:03