Campsite Sniper
Montana · Recreation.gov

Holter Dam Campground

46.9957° N / 112.0118° W · Data Sep 18 2026, checked hourly
Next open date Sep 18Next open weekend Sep 181 detected openings this week17 monitored sites

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Every site at Holter Dam Campground, colored by availability across the tracked window. Tap a site for its calendar.
Holter Dam Campground

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Booking reality
Campsite Sniper detected 1 site opening here in the last 7 days
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01 · Detected Opening History · the openings record · file CS-10180083

When Holter Dam Campground reopens

Holter Dam Campground's openings record: every site-date Campsite Sniper detected turning available, logged and time-stamped. Refreshed hourly.
Openings · last 7 days
1
Openings · last 30 days
3
Openings · last 90 days
3

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.

02 · Availability Outlook · Sep 18 – Nov 30, 2026 · of 17 monitored sites

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).

Where the open windows are

87% of tracked site-nights are not currently open for online reservation. 163 of 1,258 remain open; here is where they are.

Load status

Sep 18 – Nov 30, 2026
Not open online87%
Open site-nights163 / 1,258
Reserved (of online inventory)58 / 221
Weekday openings94
Weekend openings69

Of the open site-nights on mapped sites, 94 fall on weekdays and 69 on weekends (Fri–Sun).

Open dates by month

Sep 2026 – Nov 2026
01002003004005006001630 OPEN0 OPENSEPOCTNOVSOLID = OPEN SITE-NIGHTS · DASHED OUTLINE = TOTAL BOOKABLE

October shows no online availability. 0 of 527 tracked site-nights are open there — 527 on sites not offered online.

Holiday windows

Sites open per night · of 17 sites
WindowNightSites openStatus
Labor DaySAT Sep 50None open
SUN Sep 60None open
MON Sep 70None open
ThanksgivingTHU Nov 260None open
FRI Nov 270None open
SAT Nov 280None open

Labor Day: no online availability on any tracked night. Thanksgiving: no online availability on any tracked night.

Best-availability sites

Most open site-nights · tracked window
SiteOpen 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.

Next windows

As of Sep 18, 2026 snapshot
Next open dateFri · Sep 18
Next open weekendFri · Sep 18
October0 of 527 · not offered online

The next bookable night is Sep 18; the first open weekend starts Sep 18. Campsite Sniper can watch later dates for you.

Stays and site detail

163 open site-nights across 17 sites at Holter Dam Campground, from the same hourly snapshot as everything above.

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.

All 17 sites with current availability
SiteMax RVHookupsOpen site-nightsLongest runDates
0340 ftNone1313 nightsSep 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
0446 ftNone1313 nightsSep 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
0560 ftNone1313 nightsSep 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
0765 ftNone1313 nightsSep 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
1160 ftNone1313 nightsSep 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
14Not recordedNone1313 nightsSep 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
15Not recordedNone1212 nightsSep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29, Sep 30
0665 ftNone117 nightsSep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30
0865 ftNone1111 nightsSep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29, Sep 30
0965 ftNone1111 nightsSep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29, Sep 30
0160 ftNone99 nightsSep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29, Sep 30
1065 ftNone98 nightsSep 19, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29, Sep 30
0265 ftNone86 nightsSep 18, Sep 19, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29, Sep 30
16Not recordedNone65 nightsSep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 30
1260 ftNone33 nightsSep 28, Sep 29, Sep 30
1348 ftNone33 nightsSep 18, Sep 19, Sep 20
17Not recordedNone22 nightsSep 21, Sep 22

About Holter Dam Campground

Overview

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.

Recreation

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.

Facilities

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 .

Natural Features

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.

Nearby Attractions

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.

17 monitored sitesRVs up to 65 ftNo hookups17 shadedWaterfrontRiverfrontPets OKFire pitsMax party 10

Getting there

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.

106 N Parkmont, Butte, MT 59701
BirdingBoatingCampingDay Use AreaFishingHikingKayakingNon-Motorized BoatingPaddle BoatingRaftingRiver TripsWater ActivitiesWildlife Viewing

View on Recreation.gov ↗   Get directions ↗

FAQ

How do I get a reservation at Holter Dam Campground?

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.

Does Campsite Sniper book this campground for me?

No. Campsite Sniper sends alerts and direct Recreation.gov links. It never books, pays for, holds, hoards, or resells reservations.

How current is this availability data?

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.

How often do new openings appear at Holter Dam Campground?

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.

Can I get a multi-night stay at Holter Dam Campground?

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.

Which sites at Holter Dam Campground fit a 35-foot RV?

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.

Which month has the most availability at Holter Dam Campground?

September 2026, with 163 open site-nights in the current snapshot of 221.

When is the next open date at Holter Dam Campground?

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.

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