Mud Mountain Dam is a U.S. Army Corps of Engineers flood risk reduction dam and recreation facility on the White River near Mt. Rainier in Washington State. Visitors to the facility can view the dam, picnic, hike, bike or ride their horses in a scenic woodland setting.



From Seattle: Driving time 60 minutes
1. Take I-5 South to Hwy 18 East,
2. From Hwy 18 take the Auburn/Enumclaw exit
3. At Auburn take Hwy 164 East to Enumclaw
4. Go through Enumclaw and turn left onto Hwy 410 East
5. Go about 6 miles and turn right onto Mud Mountain Road
6. Go 2.5 miles to Mud Mountain Dam Project

From Tacoma: Driving time 60 minutes.
1. Take Hwy 167 to 410 East to Sumner
2. Hwy 410 East through Bonney Lake, Buckley and Enumclaw
3. In Enumclaw stay on Hwy 410 East
4. Go about 6 miles and turn right onto Mud Mountain Road
5. Go 2.5 miles to Mud Mountain Dam Project

Our office hours are from 7:30 am to 4:00 pm.  If you need additional information, please feel free to call us.  (206)-316-3019



Park Hours for 2024 (Subject to Change):

January 01 – April 28:                       9 a.m. to 4 p.m. (Closed Weekends)

April 29 – May 18:                             9 a.m. to 4 p.m. (Open Weekends)

May 19 – September 02:                  9 a.m. to 8 p.m. (Open Weekends)

September 03 – September 21:      9 a.m. to 6 p.m. (Closed Weekends)

September 22 – December 31:       9 a.m. to 4 p.m. (Closed Weekends)


Mud Mountain Dam observes the following federal holidays:

Monday, January 01                     New Year’s Day

Monday, January 15                     Martin Luther King, Jr. Day

Monday, February 19                   Washington’s Birthday

Monday, October 14                     Columbus Day

Monday, November 11                 Veterans Day

Thursday, November 28               Thanksgiving Day

Wednesday, December 25           Christmas Day


Wading Pool Approximate Open Dates (Subject to Change):

The Wading Pool will tentatively open June 1st

Open 7 days a week

Hours: 1:30PM to 7:30PM

Closing for the season on September 5th

Picnic Shelters

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 Shelter Reservations

18 small shelters are available on a first come - first serve basis.                                                                                                           
Two large shelters are available to reserve at or call 877-444-6777. Each shelter reservation costs $35 per day. We recommend that you begin packing up at least 15 minutes before closing. Reservations may be made for dates between May 1st and September 30th. For additional questions, Mud Mountain Dam Park Rangers may be reached Monday - Friday at (206) 316-3019.


Chinook Shelter



Cayuse Shelter



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Vista Trail

The Vista Trail begins at the upper observation deck, which provides views of the White River basin to the north, and Mud Mountain Dam to the south. Descending 1/3rd of a mile down moderately steep switchbacks brings visitors to the lower observation deck, providing a closer view of the dam and it's operational areas. 



 Rim and River Trails

The 2-mile Rim Trail follows the White River and provides views of ancient volcanic mudflows and other sedimentary deposits that formed the reservoir rim.  This is an easy hike with terrain that is gentle to slightly sloping and offers spectacular views of the White River canyon and neighboring mountains.

Hikers and mountain bikers can also join horse riders on the River Trail.  This 3.1-mile trail begins at the equestrian parking lot about two miles north of the day use area.  You can wander down through mature and transitional stands of forest on a trail that gradually opens into mudflats along the banks of the White River. You can enjoy unobstructed scenic views, abundant wildlife, and access to the White River.