Keep COVID-19 on the run: wash hands frequently, practice social distancing when possible, and respect the needs of others. Details.
Official Government Website
PARK UPDATE:
September 2021: 
  • Harriman State Park of Idaho is under a Boil Water Advisory
  • Phase II of the Park Road Paving Project begins the week of September 13th.  The project entails paving the remainder of the Park Road to the Scovel Center and to the Ranchview Day Use Parking Area, and the Ranchview Day Use Parking Area itself.
  • Due to the paving project and an event scheduled for the weekend of September 17, parking at the Ranchview Day Use Area will be at capacity.  Please plan to park at the lots at the Visitor Center.  Horse trailers can park at the Harriman Shop lot.  Please stop in at the Visitor Center if you have questions.  Thank you.
 
Please note: Harriman State Park is a waterfowl and wildlife refuge, therefore dogs are not permitted beyond the parking lots. Please keep this in mind as you plan your trips to the park.
 
 
 
 
Park Reservations
By phone: 1-888-9-CAMPID or 1-888-922-6743

Mesa Falls Recreation Area is owned by the US Forest Service and co-managed by Harriman State Park.

Summer/Spring

Big Falls Inn, an interpretive building and store, is open from Memorial weekend to mid-September from 9:30 a.m. to 5:30 p.m.

Winter

In the winter, Scenic Byway 47 does not remain open to vehicles but is groomed for snowmobile traffic.The falls are only accessible by snowmobile or cross-country skies and visitors can park at Bear Gulch on Scenic Hwy 47 east of Ashton and ski or snowmobile the packed road 5 miles to Mesa Falls. Snowmobilers can also reach Mesa Falls from Hwy 20 via Scenic Byway 47, which is a 14-mile scenic ride. The Big Falls Inn is open on weekends from 10:00 a.m. to 3:00 p.m. from the first week in January to the second week in March and you can go in and warm up by the fire. The trail down to the falls is very snow packed and icy and visitors should use extreme caution if attempting this scenic view. 

More Information

Current Conditions

Contact the Park

Address: 3489 Green Canyon Rd
Island Park, ID 83429
Phone: (208) 558-7368
Hours of Operation: Day-use locations within state parks are open from 7 am to 10 pm, per Idaho state code 26.01.20 (5). Day-use hours may change based on park manager discretion.

Email the Park

Upcoming Events

See All Events

ver: 3.4.0 | last updated: