National Park Service · Bighorn Canyon National Recreation Area

Afterbay Campground

- Near Fort Smith, Montana - Open All Year - 22 RV and tent sites are located on the south shore of Afterbay lake - All sites have fire rings and picnic tables - Composting vault toilets - All sites are back in (not pull through) - All sites have electric and water - RV dump station available across the road near the Headquarters building

First-come, first-servedAccessibility info

Limited data

The federal database holds very little for this campground, so this page is short. For current conditions and details, the official links in the sidebar are the better source.

Getting there

Take 313 through the town of Fort Smith, MT and follow the brown and white sign to Afterbay Campground. It will be on the right side of 313 just past the NPS Headquarters building.

Campgrounds nearby

First-come

Bighorn Canyon National Recreation Area

Grapevine Campground

0.2 miles away

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Bighorn Canyon National Recreation Area

Black Canyon Campground

4.6 miles away

First-come

Bighorn Canyon National Recreation Area

Dayboard 9 Campground

4.6 miles away

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Bighorn Canyon National Recreation Area

Medicine Creek Campground

19.1 miles away

First-come

Bighorn Canyon National Recreation Area

Barry'S Landing & Trail Creek Campground

20.1 miles away

First-come

Bighorn Canyon National Recreation Area

Horseshoe Bend Campground

29.1 miles away

Data source: Recreation.gov RIDB, retrieved August 30, 2026. The Campsite Atlas is an independent publication and is not affiliated with or endorsed by the Recreation.gov or any federal agency. Always confirm critical details on the official Recreation.gov page before you travel.