Pick a site on the map to see its availability calendar.
Only 3 openings in the last 90 days: not enough recent activity for a reliable pattern. A free Campsite Sniper alert watches around the clock instead, and pings you the moment one opens.
Of the 1,258 tracked site-nights (Sep 18 – Nov 30, 2026): 163 open for online reservation · 58 reserved · 1,037 on sites not offered for online reservation (first-come, first-served or administrative).
Of the open site-nights on mapped sites, 94 fall on weekdays and 69 on weekends (Fri–Sun).
October shows no online availability. 0 of 527 tracked site-nights are open there — 527 on sites not offered online.
| Window | Night | Sites open | Status |
|---|---|---|---|
| Labor Day | SAT Sep 5 | 0 | None open |
| SUN Sep 6 | 0 | None open | |
| MON Sep 7 | 0 | None open | |
| Thanksgiving | THU Nov 26 | 0 | None open |
| FRI Nov 27 | 0 | None open | |
| SAT Nov 28 | 0 | None open |
Labor Day: no online availability on any tracked night. Thanksgiving: no online availability on any tracked night.
| Site | Open site-nights |
|---|---|
| 03 | 13 |
| 04 | 13 |
| 05 | 13 |
| 07 | 13 |
| 11 | 13 |
The 5 sites with the most open site-nights in the current snapshot. Pair a bookable date with a free alert to cover everything else.
The next bookable night is Sep 18; the first open weekend starts Sep 18. Campsite Sniper can watch later dates for you.
Multi-night stays. 19 2-night, 17 3-night, 12 7-night openings where a single site is free for every night, per Campsite Sniper's current snapshot — soonest Sep 18 at site 03.
RV length. Longest recorded site here is 65 ft. 13 sites take 25 ft, 13 sites take 35 ft, 13 sites take 40 ft. 4 sites of 17 have no recorded maximum and are not counted.
| Site | Max RV | Hookups | Open site-nights | Longest run | Dates |
|---|---|---|---|---|---|
| 03 | 40 ft | None | 13 | 13 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29 +1 more |
| 04 | 46 ft | None | 13 | 13 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29 +1 more |
| 05 | 60 ft | None | 13 | 13 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29 +1 more |
| 07 | 65 ft | None | 13 | 13 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29 +1 more |
| 11 | 60 ft | None | 13 | 13 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29 +1 more |
| 14 | Not recorded | None | 13 | 13 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29 +1 more |
| 15 | Not recorded | None | 12 | 12 nights | Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29, Sep 30 |
| 06 | 65 ft | None | 11 | 7 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30 |
| 08 | 65 ft | None | 11 | 11 nights | Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29, Sep 30 |
| 09 | 65 ft | None | 11 | 11 nights | Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29, Sep 30 |
| 01 | 60 ft | None | 9 | 9 nights | Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29, Sep 30 |
| 10 | 65 ft | None | 9 | 8 nights | Sep 19, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29, Sep 30 |
| 02 | 65 ft | None | 8 | 6 nights | Sep 18, Sep 19, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29, Sep 30 |
| 16 | Not recorded | None | 6 | 5 nights | Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 30 |
| 12 | 60 ft | None | 3 | 3 nights | Sep 28, Sep 29, Sep 30 |
| 13 | 48 ft | None | 3 | 3 nights | Sep 18, Sep 19, Sep 20 |
| 17 | Not recorded | None | 2 | 2 nights | Sep 21, Sep 22 |
Holter Dam Recreation Area Located immediately below Holter Lake Dam, this stretch of the Missouri River is recognized as a premier Blue-Ribbon fishery, drawing anglers nationwide for its exceptional rainbow and brown trout fishing. The area is also popular for camping, river floating, fly fishing, picnicking, walking, scenic viewing, and wildlife observation.
Holter Dam provides:
Camping & Day-Use: 17 campsites, picnic shelters, shade structures, and accessible shoreline fishing areas.
Boating Access: A 2-lane concrete boat ramp with adjacent parking.
Visitor Services: Information kiosk, fee station, potable water system, garbage collection, and lawn with night lighting.
Facilities: Concrete vaulted latrines, picnic tables, and grills.
Trails & Scenic Access: Walking paths and viewing areas along the river.
This stretch of the Missouri River is recognized as a premier Blue-Ribbon fishery , drawing anglers nationwide in search of rainbow and brown trout. In addition to world-class fishing, visitors enjoy camping, river floating, picnicking, wildlife observation, and scenic viewing along the shoreline. While there are only a few short walking paths at the site itself, multiple fishing access sites and hunting areas nearby provide additional opportunities to experience Montana’s outdoors. Recreation in the Holter Dam area is varied and abundant.
The 17 campsites accommodate RVs, camper trailers, and tents, with amenities designed for comfort and convenience. Facilities include a parking lot, a two-lane concrete boat ramp, concrete vaulted latrines, picnic tables, grills, shade structures, and picnic shelters. Visitors will also find an information kiosk, fee station, accessible shoreline fishing areas, potable water, garbage collection, a maintained lawn, and night lighting.
Reservations are required and must be made in advance, as Holter Dam is a popular destination and sites fill quickly during peak season. Reservations can be made online at Recreation.gov .
Every campsite offers views of the Missouri River and the surrounding mountains. Poplar and green ash trees are scattered throughout the campground and day-use area, providing welcome shade during the height of summer. The setting lies within a shrub-steppe landscape dominated by sagebrush and bunchgrasses, offering a true sense of Montana’s open spaces.
Wildlife is abundant in the area. Bald eagles, ospreys, and great blue herons are often seen along the shoreline, while mule deer, bighorn sheep, and other native species roam the nearby hillsides. The reservoir’s clear waters provide excellent opportunities to observe waterfowl and enjoy the region’s natural beauty year-round.
Holter Dam Campground is conveniently located between Helena and Great Falls , making it an excellent basecamp for both outdoor recreation and cultural exploration.
On Holter Lake:
Log Gulch Campground & Day-Use Area – A large BLM-managed site on the west shore, with developed campsites, group picnic shelters, boat ramps, and a swim beach.
Departure Point – A smaller 4 site campground with direct access to the lake and beach.
Holter Lake Campground – Located upstream of Holter Dam, offering lakefront campsites, a swimming beach, and a boat ramp.
Fishing & Boating – Holter Lake is popular for kokanee salmon, rainbow trout, walleye, and perch, with multiple boat ramps providing access.
Wildlife & Birdwatching – The lake attracts pelicans, bald eagles, ospreys, and waterfowl, while bighorn sheep and mule deer are often seen on surrounding cliffs.
South to Helena (about 45 minutes):
Montana State Capitol – Tour the historic seat of Montana’s government.
Last Chance Gulch & Reeder’s Alley – Explore Helena’s vibrant downtown with shops, restaurants, and gold rush history.
Cathedral of St. Helena – A striking neo-Gothic cathedral dominating the skyline.
Mount Helena City Park – Trails lead to panoramic views of the Helena Valley.
Tizer Botanic Gardens & Arboretum – A colorful retreat in Jefferson City.
Great Northern Carousel & ExplorationWorks – Family-friendly attractions in the heart of the city.
Montana Historical Society Museum – Exhibits showcasing Montana’s history and culture.
North to Great Falls (about 1 hour):
Lewis & Clark Interpretive Center – Immersive exhibits tracing the Corps of Discovery’s journey.
C.M. Russell Museum – Celebrating the art and legacy of famed Western painter Charles M. Russell.
Giant Springs State Park & Fish Hatchery – Home to one of the largest freshwater springs in the world.
River’s Edge Trail – Miles of paved pathways along the Missouri River, with access to waterfalls and scenic overlooks.
First Peoples Buffalo Jump State Park – One of North America’s largest buffalo jump sites, with an interpretive center.
Paris Gibson Square Museum of Art – Regional art museum in a historic building.
The Five Falls of the Missouri River – Black Eagle, Rainbow, Crooked, Big Falls, and Colter Falls, accessible from overlooks and trails.
From Great Falls, Montana take Interstate-15 South towards Helena. Take exit 234 to Craig. Turn left heading to Craig and cross the Missouri River. Come to a "T" and then take a right on Recreation Road. Travel approximately 5 miles. After crossing the Missouri River/steel bridge, turn left onto Holter Dam Road. Continue 2 miles to Holter Lake Campground. The Campground will be on your left. From Helena, Montana take Interstate-15 north towards Great Falls. Take exit 226 to Wolf Creek. Turn right towards Recreation Road and cross the railroad tracks. Turn left onto Recreation Road. Before crossing the Missouri River/steel bridge, turn right onto Holter Dam Road. Continue 2 miles to Holter Lake Campground. The Campground will be on your left.
View on Recreation.gov ↗ Get directions ↗












Reservations for Holter Dam Campground are made through Recreation.gov. 87% of tracked site-nights are not currently open for online reservation; 163 of 1,258 remain open. Campsite Sniper has also detected 3 site openings here in the last 90 days, so further dates may appear. Pick a site on the map to see its calendar, or set a free Campsite Sniper alert. You complete the reservation yourself on Recreation.gov.
No. Campsite Sniper sends alerts and direct Recreation.gov links. It never books, pays for, holds, hoards, or resells reservations.
Campsite Sniper re-checks public Recreation.gov availability for this facility every hour and republishes whenever anything changes. This facility's data last changed at Sep 18, 2026 16:19 UTC; an older timestamp means nothing has changed since that time, not that checking stopped. Always confirm final availability on Recreation.gov when you book.
Campsite Sniper detected 1 site-date opening at Holter Dam Campground in the last 7 days, 3 over 30 days and 3 over the last 90.
17 three-night openings are showing, counting only runs where the SAME site is free for all three nights. The soonest starts Sep 18 at site 03. Confirm and book on Recreation.gov.
13 of the 17 sites that support RV analysis have a recorded maximum of 35 ft or more; the longest recorded is 65 ft. 13 of those 17 sites have a recorded maximum length and 4 do not; they are not counted as fitting.
September 2026, with 163 open site-nights in the current snapshot of 221.
As of the Sep 18, 2026 snapshot: the next open date is Fri, Sep 18 and the next open weekend starts Fri, Sep 18. Detected openings can add earlier dates at any time; a free Campsite Sniper alert catches those the moment they appear.
Lakefront, hookups, your RV length, weekends only - set it as picky as you want.
We run paced availability checks for Holter Dam Campground. One watch covers every matching site.
When a match opens, you get a push with a Recreation.gov link so you can review and book it yourself.