Afterbay Campground — Bighorn Canyon National Recreation Area

SUMMARY PRESENTED BYT-Mobile

Open terrain and direct water access define the experience at Afterbay Campground, a National Park Service site within Bighorn Canyon National Recreation Area. The campground sits alongside Afterbay Lake, not inside the canyon itself, which means sightlines are wide and unobstructed rather than dramatic. Anglers and paddlers make up much of the visitor base here, with a fishing dock and a small boat ramp giving direct access to the water. No pets are allowed on site.

Amenities are straightforward. Electrical hookups accommodate RVs, and water spigots are distributed across the campground. Vault toilets are on-site, but there are no showers or sewer connections. Verizon users report workable cell reception, though data speeds are marginal. The road in has been flagged as rough, so drivers should factor that in. The nearest town has minimal resupply options, and as Russell B. notes, "a nearby fishing shop/market has bare minimum supplies," so arriving well-stocked is advisable.

Wildlife activity has been noted by visitors, including bears in the area during at least one stay. The animals kept their distance, but campers should store food accordingly. Nearby, Grapevine Campground and Garrison Stoker Resort provide alternative bases for those exploring the region, and campers planning a broader trip can browse camping near Fort Smith for additional options. Afterbay works best for self-sufficient campers who come primarily to fish or paddle.

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RV Road Trip Guides

Map & DirectionsAfterbay Campground is located in Montana near Fort Smith

Detail location of campground
Public Campground

Directions

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.

Address

P.O. Box 7458
Fort smith, MT 59035

Coordinates

45.315438 N
107.941659 W

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Connectivity

Presented byT-MobileT-Mobile is introducing T-Satellite to extend coverage in the outdoorsLearn More
  • signal strength bars
    T-Mobile
    No Coverage
  • signal strength bars
    Verizon
    No Coverage
    Verified by 2 users
    Last on 8/6/26
  • signal strength bars
    AT&T
    No Coverage

Connectivity

Presented byT-MobileT-Mobile is introducing T-Satellite to extend coverage in the outdoorsLearn More
  • signal strength bars
    T-Mobile
    No Coverage
  • signal strength bars
    Verizon
    No Coverage
    Verified by 2 users
    Last on 8/6/26
  • signal strength bars
    AT&T
    No Coverage

Access

  • Drive-In
    Park next to your site

Site Types

  • RV Sites
  • Standard (Tent/RV)

Features

For Campers

  • Trash
  • Phone Service
  • Drinking Water
  • Toilets

For Vehicles

  • 30 Amp Hookups
  • 50 Amp Hookups
  • Big Rig Friendly

Drive Time


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Reviews5 Camper Reviews - Afterbay Campground

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4.5

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5 Reviews

Campers regularly cited the well-maintained, clean sites with water access and RV hookups. Limited amenities like no showers or sewer, but good for water activities with fishing dock and boat ramp.

SUMMARY PRESENTED BYT-Mobile
Reviewed Aug. 18, 2025

Afterbay Campground

Will maintained and set up campground. No sewer or showers however, electricity and water and vault toilets. Cell reception is good with Verizon, cell Internet is marginal. Local town has almost no resources. A nearby fishing shop/market has bare minimum supplies.

Site1
Month of VisitAugust
Reviewed Sep. 16, 2021

Nice Find

Clean and quiet campsite on the water. There are several water spigots and there are sites with electrical hookups for RVs. The site also has a fishing dock with a small ramp to access the river with. During my stay there was lots of bear activity, but the bears avoided human contact and were not a threat. The site closed for renovations the day I left, but should be open again by the spring

Site17
Month of VisitAugust
  • Review photo of Afterbay Campground — Bighorn Canyon National Recreation Area by Van S., September 16, 2021
Reviewed Jun. 10, 2021

Not in canyon

This campsite is on afterbay which is not in the canyon. Campsite is well maintained with drop toilet but no water

Month of VisitJune
Reviewed May. 8, 2017

Amazing

Lots of hiking fishing boating great people and guides. Such a beautiful place. A must see for everyone. Great for all.

  • Review photo of Afterbay Campground — Bighorn Canyon National Recreation Area by Andrea R., May 8, 2017
  • Review photo of Afterbay Campground — Bighorn Canyon National Recreation Area by Andrea R., May 8, 2017

Frequently Asked Questions

Does Afterbay Campground — Bighorn Canyon National Recreation Area have RV hookups?

According to TheDyrt.com, Afterbay Campground — Bighorn Canyon National Recreation Area has 30 amp and 50 amp electric hookups.

Does Afterbay Campground — Bighorn Canyon National Recreation Area have wifi?

No, according to campers on TheDyrt.com, Afterbay Campground — Bighorn Canyon National Recreation Area does not have wifi.

Is there cell phone reception at Afterbay Campground — Bighorn Canyon National Recreation Area?

According to campers on TheDyrt.com, there is no coverage for AT&T, no coverage for T-Mobile, and no coverage for Verizon.