The Winter Season has arrived!!! Winter Access Fees will go into effect when we start grooming the trails. Follow us on Facebook for current trail conditions, events, and link to local weather.
**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. The exception is that in winter there is the Harriman Hounds Trail that is groomed and goes outside the refuge into the National Forest. Trail starts behind the Visitor’s Center. Winter Access and motor vehicle fees still apply.
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.