The Summer season is here!!! There is a $7 Motor Vehicle Entrance Fee (MVEF) per vehicle to visit the Park. On the same day, the MVEF is also valid at Henrys Lake State Park and Mesa Falls Recreational Area. As a condition of the gift deed agreement from the Harriman family, Harriman State Park of Idaho is a waterfowl and wildlife refuge and both Golden and Silver Lakes are left as sanctuaries for the waterfowl. Golden and Silver Lakes are closed to fishing, boating, and swimming. Please consult the current fishing regulations for accurate information.
Historic building tours are Friday, Saturday, and Sunday from 10:00AM to 3:00PM Memorial Day Weekend to Labor Day.
All trails are open but be Bear Aware and respect the plants and animals while you visit their home.
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**Note: If you do not have a Facebook account, please use your phone or Google Chrome browser and scroll to the very bottom of this page. There you can see the latest Harriman State Park posts, including conditions updates.
Please note: Harriman State Park is a waterfowl and wildlife refuge, therefore dogs are not permitted beyond the parking lots at the main trails.
Mesa Falls Recreation Area is owned by the US Forest Service and co-managed by Harriman State Park.
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.
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.
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.