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.

*The Wading Pool is officially open for the 2023 season! See the wading pool section below for more details.*



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 2023 (Subject to Change):

January 1, 2023 - April 30, 2023:                     9 a.m. - 4 p.m. (Closed Weekends)

May 1, 2023 - May 20, 2023:                            9 a.m. - 4 p.m. (Open Weekends)

May 21, 2023 -  September 4, 2023:               9 a.m. - 8 p.m.  (Open Weekends)

September 5, 2023 - December 31, 2023:     9 a.m. - 4 p.m. (Closed Weekends) 


Mud Mountain Dam observes the following federal holidays:

Monday, January 2  (New Year's Day) 

Monday, January 16 (Martin Luther King Day)

Monday, February 20 (Presidents' Day)

Monday, October 9 (Columbus Day)

Friday, November 10 (Veterans Day)

Thursday, November 23 (Thanksgiving)

Monday, December 25 (Christmas Day)


Wading Pool Approximate Open Dates (Subject to Change):

The Wading Pool is officially open for the 2023 season! 

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.

NOTICE: Due to the COVID-19 Pandemic, gatherings are restricted to a maximum of 50 people.


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.