Can you reserve a site at Afterbay Campground?

No. Afterbay Campground is not reservable through Recreation.gov, so sites are first-come, first-served or booked elsewhere.

Afterbay Campground

Campground · Montana ·

Managed by the National Park Service

3,203 ft
Elevation

Afterbay Campground upper spots — Photo: NPS, Jen Prentiss · Recreation.gov

- 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

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.

45.31544, -107.94155 · 45°18'55.6"N 107°56'29.6"W

Directions (Google Maps) · Directions (Apple Maps)

Typical weather

Typically 89°F in Jul, down to 39°F in Jan.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
High °F	39	40	50	58	68	78	89	87	76	61	48	39
Low °F	20	21	28	36	44	53	59	57	49	38	28	21
Precip in	0.7	0.8	1.2	1.9	2.6	2.3	1.1	0.8	1.7	2.0	0.8	0.7

1991–2020 averages from the nearest NOAA station, 0.2 mi away — not measured at the facility itself, and elevation can make a real difference over that distance.

Map

More photos

Afterbay Campground Map — Photo: Afterbay Campground Service · Recreation.gov

Afterbay Campground looking toward Grapevine Campground. — Photo: NPS Photo · Recreation.gov

Member photos

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Common questions about Afterbay Campground

Can you reserve a site at Afterbay Campground?: No. Afterbay Campground is not reservable through Recreation.gov, so sites are first-come, first-served or booked elsewhere.

Camping near Afterbay Campground

Sage Creek Cabin 30.9 mi · Campground · we watch it
Grapevine Campground 0.2 mi · Campground
Black Canyon Campground 4.6 mi · Campground
Dayboard 9 Campground 4.6 mi · Campground
Medicine Creek Campground 19.1 mi · Campground
Barry's Landing & Trail Creek Campground 20.1 mi · Campground
Big Ice Cave Picnic Area and Interpretive Site 24.8 mi · Facility
Horseshoe Bend Campground 29.1 mi · Campground
Little Bighorn Battlefield Visitor Center 30.4 mi · Visitor Center
Sage Creek Campground 30.6 mi · Campground
Cottonwood Creek Campground 31.5 mi · Campground
Cottonwood Creek Trailhead 31.6 mi · Facility

Comments

Contact

Recreation.gov last updated this record on 2026-06-14.

Facility information and photographs from Recreation.gov (RIDB). SpotOpened is not affiliated with Recreation.gov or any federal agency.