Horsethief Reservoir Boat Ramp provides access to a 258. 5-acre reservoir located 9 miles east of Cascade, Idaho, with boat launching facilities available on both the east and west sides.

The ramp accommodates small fishing boats and is subject to a 5 mph no-wake speed limit. The area offers nearby camping with first-come, first-served sites, potable water, and restrooms, though there are no RV hookups or trash services available.