Openings · last 7 days
26
Booking reality
Campsite Sniper detected 26 site openings here in the last 7 days
01 · Detected Opening History · the openings record · file CS-231860
When Arapaho Bay reopens
Arapaho Bay's openings record: every site-date Campsite Sniper detected turning available, logged and time-stamped. Refreshed hourly.
Openings · last 30 days
59
Openings · last 90 days
66
Weekday pattern
Detected openings by day of week · 90dNo strong weekday pattern is evident in the openings Campsite Sniper has detected: 66 openings spread across the week.
Hour-of-day pattern
First detected by hour · local time · last 90 daysThe largest concentrations of detected openings were first detected during the 19:00 and 22:00 local-time hours. Those hours contained 19 of 66 detected openings (28.8%). Hours show when Campsite Sniper first detected each opening, in Mountain Time, not when the change was made upstream.
Lead-time profile
Days before stay date · percentilesHalf of the openings Campsite Sniper detected appeared at least 7 days before the stay date; the middle 50% land 5.2–13.8 days out. Set an alert if you want Campsite Sniper to monitor future openings.
Highest-churn sites
Most openings · 90d| Site | Openings | Share of all openings |
|---|---|---|
| 039 | 5 | 7.6% |
| 007 | 5 | 7.6% |
| 040 | 5 | 7.6% |
| 072 | 4 | 6.1% |
| 031 | 4 | 6.1% |
Site 039 had the most detected openings in the last 90 days: 5. One free watch covers every site here.
02 · Availability Outlook · Sep 18 – Sep 19, 2026 · of 79 monitored sites
Of the 158 tracked site-nights (Sep 18 – Sep 19, 2026): 98 reserved · 60 on sites not offered for online reservation (first-come, first-served or administrative). Of the facility's 79 monitored sites, 64 can be reserved online and 15 are first-come, first-served.
No online availability right now
Of the 158 tracked site-nights (Sep 18 – Sep 19, 2026): 98 reserved · 60 on sites not offered for online reservation (first-come, first-served or administrative). A free alert tells you if any date opens online.
Load status
Sep 18 – Sep 19, 2026Not open online100%
Open site-nights0 / 158
Reserved (of online inventory)98 / 98
Of the 158 tracked site-nights (Sep 18 – Sep 19, 2026): 98 reserved · 60 on sites not offered for online reservation (first-come, first-served or administrative).
Open dates by month
Sep 2026 – Sep 2026No month in range currently shows online availability. 0 open site-nights across the tracked window — these site-nights are a mix of reserved, closed, unreleased and non-reservable dates.
Holiday windows
Sites open per night · of 79 sites| 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 |
Labor Day: no online availability on any tracked night.
About Arapaho Bay
Overview
The Arapaho Bay Campground is located in the Arapaho National Recreation Area on Lake Granby, southeast of Grand Lake. Visitors enjoy the area for its great boating, fishing and hiking opportunities.
Recreation
Lake Granby is part of the Arapaho National Recreation Area. It offers boating, sailing, swimming and fishing. Anglers cast for kokanee salmon and a variety of trout, including rainbow, brown, mackinaw and cutthroat. National Fishing Week is held the first week of June each year.
Numerous hiking and horseback riding trails are located within the Arapaho National Recreation Area, including the Roaring Fork Trail, Monarch Lake Trail and the East Shore Trail (which is part of the Continental Divide National Scenic Trail).
Facilities
The campground offers three loops of single- and double-family sites, a few of which are accessible. Each site is equipped with a picnic table, campfire ring and tent pad. Vault toilets, drinking water is available in the Big Rock Loop and trash collection are provided.
Natural Features
The campground is situated on Arapaho Bay, on the eastern tip of Lake Granby, at an elevation of 8,300 feet. Afternoon thunder showers should be expected during the summer months.
Due to the mountain pine beetle infestation and consequent hazardous tree removal, the campground offers little to no shade.
Nearby Attractions
Rocky Mountain National Park's west entrance is just north of Grand Lake. With lush valleys and craggy peaks reaching elevations over 14,000 feet, visitors are provided opportunities for countless breathtaking experiences and adventures. Scenic driving, hiking, backpacking, fishing, horseback riding and wildlife viewing are popular activities in the park.
79 monitored sites15 FCFS sitesRVs up to 45 ftNo hookupsPets OKMax party 16
Getting there
From the intersection of U.S. Highways 40 and 34 in Granby, head north on Highway 34 for about 5 miles to County Road 6. Go east for 9 miles to the campground.
9054 U.S Hwy 285, Morrison, CO 80465
BoatingCampingFishingHikingSailingSwimming SiteWildlife Viewing
View on Recreation.gov ↗ Get directions ↗
03 · Field Photos · roll CS-231860 · facility + sites
Photo gallery
Roll CS-231860 · Arapaho Bay · Morrison CO12 frames · facility + sites
FAQ
How do I get a reservation at Arapaho Bay?
Campsite Sniper's current snapshot shows none of the 158 tracked site-nights open for online reservation at Arapaho Bay. That can mean dates are reserved, closed, not yet released, or offered first-come, first-served rather than online. Campsite Sniper has also detected 66 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 Arapaho Bay?
Campsite Sniper detected 26 site-date openings at Arapaho Bay in the last 7 days, 59 over 30 days and 66 over the last 90.
Which sites at Arapaho Bay fit a 35-foot RV?
27 of the 79 sites that support RV analysis have a recorded maximum of 35 ft or more; the longest recorded is 45 ft. 78 of those 79 sites have a recorded maximum length and 1 does not; it is not counted as fitting.
How far ahead of a stay do openings appear at Arapaho Bay?
Half of the openings Campsite Sniper detected appeared at least 7 days before the stay date; the middle 50% landed 5.2-13.8 days out. Campsite Sniper can monitor future changes for dates you select.
Does Arapaho Bay have online availability right now?
As of the Sep 18, 2026 snapshot, none of the 158 tracked site-nights are open for online reservation. That can mean dates are reserved, closed, not yet released, or offered first-come, first-served rather than online. A free Campsite Sniper alert tells you if any date opens online.
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When a match opens, you get a push with a Recreation.gov link so you can review and book it yourself.
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