PARK UPDATE:
Summer 2024 Update:
The boat launch at Massacre Rocks State Park will be temporarily closed for construction beginning July 9, 2024. For more project information, click here.
Park Reservations
By phone: 1-888-9-CAMPID or 1-888-922-6743
Current Conditions
Contact the Park
Address: 3592 N. Park Ln
American Falls, ID 83211
Phone: (208) 548-2672
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.
