Free camping comes with tradeoffs, and Lower Portneuf Campground makes most of them visible upfront. Managed by Idaho Department of Fish and Game within the Portneuf (Lower) Access Site, the campground has eight first-come, first-served sites, each with a picnic table, fire ring, and gravel parking area sized to accommodate rigs up to 34 feet. Entry requires crossing an active railroad track, which is worth knowing before you arrive. A pit toilet sits a short walk away in the adjacent day-use area.
The train situation is the single most discussed detail across reviews, and it warrants honest attention. Tracks run roughly 30 yards from the sites, and because there is a grade crossing at the campground entrance, engineers are required to sound their horns each time a train passes. Counts vary, but several campers report six to eight trains moving through overnight, mostly between 1 a.m. and 6 a.m. Light sleepers should plan accordingly. That said, not everyone finds it disruptive. "Very pretty water rushing made for great sleep sounds when train wasn't passing," notes Matt S., and at least one reviewer slept through most of it with a fan running.
The Portneuf River runs close to the sites, roughly 30 yards away, though it is not visible from the camping area itself. Anglers, paddlers, and those who want to float have direct river access nearby. Reviewers specifically call out the fishing and note that paddle boarding and kayaking are popular. The surrounding landscape is open with no shade, so sites get full sun, which can be a factor on warm days.
Lava Hot Springs sits minutes away by car, with hot mineral pools open until 11 p.m., along with grocery stores, restaurants, and shops. Cell service is reliable at the campground. The KOA just before the turnoff reportedly allows free water fills. Crowds are real, particularly on weekends and in late September when nomadic travelers are moving through. A Thursday morning visit in late September found only two sites remaining.
Campers wanting a quieter setup or more separation from the rail line might consider Portneuf Bend Campground, located a short distance south along the same river corridor.
RV Road Trip Guides
Map & DirectionsLower portneuf campground is located in Idaho near Lava Hot Springs
Coordinates
42.64105519 N
112.0052024 W
Connectivity
- T-Mobile5GExcellent CoverageVerified by 5 usersLast on 8/15/26
- VerizonLTESome CoverageVerified by 7 usersLast on 8/15/26
- AT&TLTESome CoverageVerified by 3 usersLast on 8/15/26
Connectivity
- T-Mobile5GExcellent CoverageVerified by 5 usersLast on 8/15/26
- VerizonLTESome CoverageVerified by 7 usersLast on 8/15/26
- AT&TLTESome CoverageVerified by 3 usersLast on 8/15/26
Access
- Drive-InPark next to your site
- Walk-InPark in a lot, walk to your site.
Site Types
- Tent Sites
- RV Sites
- Standard (Tent/RV)
- Group
- Tent Cabin
Features
For Campers
- ADA Access
- Picnic Table
- Phone Service
- Toilets
- Alcohol
- Pets
- Fires
For Vehicles
- Big Rig Friendly
FREE established camping
Enjoy camping on government land. Limited or no services at this camping area.
PERMIT might be REQUIRED
We curate permit requirements across the US for our PRO members. Try PRO to see if Lower portneuf campground needs a permit.
Drive Time
- 37 min from Pocatello, ID
- 1 hr 9 min from Idaho Falls, ID
- 1 hr 21 min from Logan, UT
- 1 hr 33 min from Ogden, UT
























