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About
Mortimer Gulch campground is located close to Gibson Reservoir with 26 campsites available for use. Fishing for rainbow or cutthroat trout in the reservoir and in the North Fork of the Sun River is an excellent way to spend the weekend away during the summer months. It is highly recommended that a4WD vehicle is used to reach the cement boat ramp (1/2 mile away).Bears may frequent the area; keep all food out of sight in approved containers and remove all food from area after eating. Mandatory food storage is required.
Around this stay
Nearest surrounding services and recreation within ~25 mi — not on-site amenities.
No dump, fuel, grocery, or recreation places found within ~25 mi.
No dump station found within ~25 mi. Plan dump access before you arrive.
Forest road access near this stay: GIBSON DAM INTERPRETIVE in Helena-Lewis and Clark National Forest. Motorhome access is listed as open on the nearest MVUM segment — verify current restrictions.
Contact & access
- MT
- fs.usda.gov
- OPEN
Source and verification
Last verified: 10/10/2026
See the Sources tab for provenance detail.

