Pets allowed
Guided tours
Backcountry camping
Please respect the outdoors by practicing Leave No Trace. Learn more about how to apply the principles of Leave No Trace on your next outdoor adventure here.

Located 2 miles upstream from Snoqualmie Falls, under the shadows of Mount Si* and at the confluence of the South, Middle, and North forks of the Snoqualmie River, over 200 acres of meadow, cottonwood forest, wetlands, and sloughs have been preserved to create the Three Forks Natural Area and the 8-acre Three Forks Off-Leash Dog Park.

Popular for its dog park and bird watching, the park is also a mid-way terminus and access point for the 31.5-mile Snoqualmie Valley Trail; because the bicycle trail is bisected into a north and south section, the park serves as the northern terminus for the south section. Following the old rail line, the Snoqualmie Valley Trail will take you southeast upstream all the way to Rattlesnake Lake, the starting point for the John Wayne Pioneer Trail.

* Interestingly, Mount Si was originally known as Uncle Si's Mountain, named after Josiah Merrit ("Uncle Si"). Merrit, who built a cabin at the base of the peak in 1862, was a hog farmer who supplied bacon to the local communities.

Logistics + Planning

Preferable season(s)




Parking Pass

Not Required


Bird watching. Trailhead for Snoqualmie River Trail. Dog Park.


Much of the park is inaccessible.


Picnic tables
Off-leash dog area
Bird watching


Nearby Adventures

Seattle + Tacoma Metro Area, Washington
Plum Boat Launch to Fall City Park

Nearby Lodging + Camping


Huge dog park, never crowded. Head out of the back gate, across the road/trail and into the wilderness area. After 1/4 mile or so, look for narrow access paths on your left, these will lead down to the river. Not advised outside of late June through early September, since the river is too high. However, during the summer, on a hot day, you can lounge on the sand bar and swim with your dog.
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