Big Therriault Lake Campground
Closed for the season due to winter conditions. The campground is managed from late June through early September but remains accessible year-round weather permitting. Access via unpaved forest roads depends on snow conditions.
Northern Region Camping & Target Restrictions, Pallet Prohibition
This order defines the maximum length of occupation at a single location or cumulatively at any number of locations within a calendar year, within the states of Montana, North Dakota, South Dakota, and Idaho
Weed Free Forage & Mulch Products Order for the Northern Region
It is illegal to possess, store or transport straw, hay, grain, seed or other forage or mulch products on Forest Service lands without documentation that the product is certified as “weed free” by a state certification process that meets or exceeds the North American Weed Free Forage standards.
R1-2023-02 - NCDE Food and Wildlife Attractant Storage Order
Northern Continental Divide Ecosystem Food/Wildlife Attractant Storage Order for the Flathead, Lolo, Kootenai, Helena-Lewis and Clark, and Beaverhead-Deerlodge National Forests within the Northern Continental Divide Ecosystem.
Ross Creek Cedars Road Closure & Storm Damage Update
The Ross Creek Cedars sustained significant damage during the December 2025 flood events. Heavy rains, flooding, landslide, and debris flows that occurred in December 2025 created unstable conditions along NFS Road #398. Significant erosion undercut sections of the road, limiting access to foot and…
Rexford Bench Boat Launch Closure
Progress continues on the Rexford Bench boat launch upgrade, replacing the existing asphalt with concrete. Construction operations are expected to continue into mid-May, so a closure order will remain in place for the boat launch and lower parking area for public and worker safety. The Peck Gulch…
Big Creek Closure-Peregrine Falcon Nesting Area
A closure order is in now effect for the Big Creek Area on the Rexford Ranger District, which is a known area for peregrine falcon nesting. Peregrine falcons are particularly sensitive to disturbance and activity above their nest or rock climbing in its vicinity. Disturbance during the nesting…
Timberlane Campground Closure
A closure order is now in effect for the Timberlane Campground on the Libby Ranger District, while it undergoes much-needed improvements. The purpose of this order is for public safety during reconstruction and improvement operations in the campgroundAs you start making your summer plans and…
Libby Spring Road Closures
Spring road closures are now in effect on certain Libby Ranger District roads. All motorized vehicles over 10,000 GVW are prohibited from using or being operated on the designated roads. The purpose of this restriction is to prevent damage to road surface and base due to thawing action or excess…
Spar Lake Road #384 Road Closed to Motorized Vehicles
A closure order is now in effect for motorized vehicles on the Three Rivers Ranger District for Forest Service Road #384 (Spar Lake). The closure is to provide for public safety until crews make appropriate repairs to road damage caused by the December 2025 flood event. The road is closed starting…
Upper Young Creek Road #7202 Closure
A closure order is now in effect on the Rexford Ranger District for Forest Service Road #7202 (Upper Young Creek Road). The closure is to provide for public safety due to a washout making the road impassable. The road is currently closed at milepost 3.5 to 3.6, just north of its junction with NFS…
Flood Events & Safety Reminders
Over the past week, portions of the Kootenai National Forest have experienced heavy amounts of rainfall due to an atmospheric river moving through the area. The rapid increase in rainfall on top of snow in the higher elevations has resulted in localized flooding and increased the risk of…
Kootenai Flood Event & Inaccessible Areas
Portions of the Kootenai National Forest have recently experienced heavy amounts of rainfall due to an atmospheric river moving through the area. The rapid increase in rainfall on top of snow in the higher elevations has resulted in localized flooding and increased the risk of landslides, debris…
Isabella & Lost Girl Fires- Road and Trail Closure
Due to the Isabella and Lost Girl Fires on the Cabinet Ranger District, a closure order is now in effect for a portion National Forest System Road 407, National Forest System Trail #407A, and Trail #646 (St. Paul Lake Trail). The purpose of this Order is for public and firefighter safety due to…
About
Big Therriault Lake Campground is a remote alpine retreat located 12.5 air miles from Fortine in the Kootenai National Forest. Perched at 5,554 feet elevation, the campground offers 10 sites including one host site across 4 acres of forested land adjacent to the pristine 45-acre Big Therriault Lake. Each site features a picnic table and fire ring, with parking suitable for RVs up to 32 feet. The campground provides vault toilets and food storage boxes, but visitors must bring their own water as potable water is not available. A boat ramp accommodates small boats for lake access. The lake is renowned for its crystal-clear waters and cutthroat trout fishing. The Big Therriault Loop Trail offers a scenic 1-mile hike around the area. Access to the campground requires traveling improved but unpaved forest roads, with the final approach on Forest Road 7085. This is a pack-in, pack-out facility, so visitors must pack out all trash. The campground is managed from late June through early September, but remains accessible year-round depending on weather and road conditions. Pets are welcome but must be leashed, and a 16-day stay limit applies.
Directions
From Eureka, go south on US 93 for 7 miles, then east on Grave Creek Road for 14 miles, west on FR 319 for about 14 miles, then turn south onto FR 7085. Most roads are improved but unpaved.
Amenities
| Water | No |
| Fires Allowed | Yes |
| Toilets | Yes |
| Dump Station | No |
| Wifi | No |
| Pets Allowed | Yes |
| Showers | No |
| Electric Hookups | — |
| Water Hookups | — |
| Sewer Hookups | — |
| Camp Store | No |
| Price | $10 |
Vehicle
| Max RV Length | 32ft |
| Max Trailer Length | — |
| Big Rig Friendly | No |
| Pull Through Sites | — |
Contact
| Phone | +1 (406) 293-6211 |
Cell Service
| AT&T | Yes |
| Verizon | None |
| T-Mobile | None |
Useful Links
| Big Therriault Lake Campground | |
| View on Recreation.gov |
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