Water levels at Buttercup Campground shift with the seasons. Lake Cascade's fluctuating reservoir has been known to submerge sites when water runs high, leaving only a portion of the campground usable at any given time. Managed by Idaho Parks and Recreation within Lake Cascade State Park, the campground runs from late May through December and accommodates a range of setups, including big rigs and ADA-accessible sites. Nightly rates run $11 to $33. Campers wanting to compare options in the area can browse campgrounds near Donnelly before booking. West Mountain Campground — Lake Cascade State Park sits less than a mile south and provides an alternative if Buttercup's site availability is limited.
Description
29 sites, no hook-ups. Central water. Vault restrooms. Foot bridge to Boat Ramp. Boat Ramp has its own entrance separate from the campground with handling docks. Campground parking is limited, overflow located in boat ramp area.
RV Road Trip Guides
Map & DirectionsButtercup Campground is located in Idaho near Donnelly
Directions
Huckleberry, Buttercup, West Mountain, Poison Creek and Poison Creek Boat Ramp Area: Are all on the west side of the lake. The easiest way to reach this is through Donnelly. Turn west on Roseberry Rd., off of Highway 55. Turn south (left) on West Mountain Rd. Huckleberry will be the first campground you reach and it will be on the east (left) side of the road. The other campgrounds are further south, within a few miles of each other, and also on the east (left) side of the road.
Address
970 Dam Rd
Donnelly, ID 83615
Coordinates
44.68297278844669 N
116.11437027371278 W
Connectivity
- T-Mobile5GExcellent CoverageVerified by 4 usersLast on 7/18/26
- Verizon5GExcellent CoverageVerified by 1 user
- AT&T5GExcellent CoverageVerified by 2 usersLast on 7/4/26
Connectivity
- T-Mobile5GExcellent CoverageVerified by 4 usersLast on 7/18/26
- Verizon5GExcellent CoverageVerified by 1 user
- AT&T5GExcellent CoverageVerified by 2 usersLast on 7/4/26
Access
- Drive-InPark next to your site
- Walk-InPark in a lot, walk to your site.
- Boat-InSites accessible by watercraft.
Site Types
- Tent Sites
- RV Sites
- Standard (Tent/RV)
- Group
Features
For Campers
- ADA Access
- Trash
- Picnic Table
- Firewood Available
- Phone Service
- Reservable
- Drinking Water
- Toilets
- Alcohol
- Pets
- Fires
For Vehicles
- Big Rig Friendly
Contact
General Info
Reservations
Drive Time
- 1 hr 59 min from Boise, ID
- 3 hrs 8 min from Lewiston, ID
- 3 hrs 43 min from Twin Falls, ID
- 4 hrs 54 min from Walla Walla, WA









