Pick a site on the map to see its availability calendar.
Only 45 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 5,673 tracked site-dates (Sep 18, 2026 – Mar 19, 2027): 2,508 open for online reservation · 375 reserved · 2,790 closed.
Of the open site-nights on mapped sites, 1,401 fall on weekdays and 1,014 on weekends (Fri–Sun). The split covers the 2,415 open site-nights on mapped sites; 2,508 site-dates are open across all monitored inventory.
December shows no online availability. 0 of 961 tracked site-dates are open there — 961 closed.
| 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 | 21 | Open |
| FRI Nov 27 | 23 | Open | |
| SAT Nov 28 | 23 | Open | |
| Christmas | THU Dec 24 | 0 | None open |
| FRI Dec 25 | 0 | None open | |
| New Year | THU Dec 31 | 0 | None open |
| FRI Jan 1 | 0 | None open |
Labor Day: no online availability on any tracked night. Thanksgiving: 21 sites are available for the complete three-night stay. Christmas: no online availability on any tracked night. New Year: no online availability on any tracked night.
| Window | Date | Units 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 | 1 | Open |
| FRI Nov 27 | 1 | Open | |
| SAT Nov 28 | 1 | Open | |
| Christmas | THU Dec 24 | 0 | None open |
| FRI Dec 25 | 0 | None open | |
| New Year | THU Dec 31 | 0 | None open |
| FRI Jan 1 | 0 | None open |
Labor Day: no online availability on any tracked date. Thanksgiving: 1 day-use unit is available for all three dates. Christmas: no online availability on any tracked date. New Year: no online availability on any tracked date.
| Site | Open site-nights |
|---|---|
| 01 | 93 |
| 02 | 93 |
| 03 | 93 |
| 04 | 93 |
| 05 | 93 |
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.
| Unit | Open reservation dates |
|---|---|
| GS1 | 93 |
This day-use unit currently has 93 reservation dates available.
The next bookable night is Sep 18; the first open weekend starts Sep 18. Campsite Sniper can watch later dates for you.
30 overnight sites and 1 day-use unit are represented in the current inventory. Day-use inventory is excluded from every night-based figure on this page — site-nights, longest runs, multi-night stays, holiday stays and RV fit; its reservation dates are listed separately below.
Multi-night stays. 115 2-night, 103 3-night, 87 7-night openings where a single site is free for every night, per Campsite Sniper's current snapshot — soonest Sep 18 at site 01.
RV length. Longest recorded site here is 68 ft. 28 sites take 25 ft, 27 sites take 35 ft, 26 sites take 40 ft. 2 sites of 30 have no recorded maximum and are not counted.
| Site | Max RV | Hookups | Open site-nights | Longest run | Dates |
|---|---|---|---|---|---|
| 01 | 48 ft | Yes | 93 | 74 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 +81 more |
| 02 | 50 ft | Yes | 93 | 74 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 +81 more |
| 03 | 47 ft | Yes | 93 | 74 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 +81 more |
| 04 | 62 ft | Yes | 93 | 74 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 +81 more |
| 05 | 59 ft | Yes | 93 | 74 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 +81 more |
| 06 | 64 ft | Yes | 93 | 74 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 +81 more |
| 27 | Not recorded | Yes | 93 | 74 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 +81 more |
| 29 | Not recorded | Yes | 93 | 74 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 +81 more |
| 11 | 68 ft | Yes | 90 | 67 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 +78 more |
| 12 | 57 ft | Yes | 90 | 67 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 +78 more |
| 17 | 48 ft | Yes | 90 | 46 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 +78 more |
| 26 | 49 ft | Yes | 89 | 68 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 +77 more |
| 14 | 64 ft | Yes | 88 | 58 nights | Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 2, Oct 3 +76 more |
| 13 | 55 ft | Yes | 86 | 39 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 2 +74 more |
| 21 | 48 ft | Yes | 84 | 25 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 +72 more |
| 28 | 48 ft | Yes | 81 | 51 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 29, Sep 30, Oct 5, Oct 6, Oct 7 +69 more |
| 18 | 30 ft | Yes | 80 | 26 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 +68 more |
| 07 | 63 ft | Yes | 79 | 40 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 +67 more |
| 10 | 57 ft | Yes | 78 | 23 nights | Sep 27, Sep 28, Sep 29, Oct 1, Oct 2, Oct 3, Oct 4, Oct 5, Oct 6, Oct 7, Oct 8, Oct 9 +66 more |
| 15 | 67 ft | Yes | 78 | 27 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 +66 more |
| 20 | 57 ft | Yes | 78 | 24 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 +66 more |
| 09 | 62 ft | Yes | 75 | 22 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 2 +63 more |
| 22 | 58 ft | Yes | 73 | 21 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 +61 more |
| 30 | 53 ft | Yes | 72 | 38 nights | Sep 21, Sep 22, Sep 23, Sep 24, Sep 29, Sep 30, Oct 5, Oct 6, Oct 7, Oct 8, Oct 9, Oct 10 +60 more |
| 08 | 55 ft | Yes | 68 | 19 nights | Sep 20, Sep 21, Sep 22, Sep 23, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 2, Oct 3, Oct 4 +56 more |
| 23 | 52 ft | Yes | 68 | 25 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 +56 more |
| 16 | 58 ft | Yes | 66 | 19 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Oct 4, Oct 5, Oct 6, Oct 7, Oct 8 +54 more |
| 19 | 48 ft | Yes | 56 | 21 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 +44 more |
| 25 | 59 ft | Yes | 52 | 19 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1 +40 more |
| 24 | 39 ft | Yes | 50 | 19 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 +38 more |
| Unit | Open reservation dates | Consecutive dates | Dates |
|---|---|---|---|
| GS1 | 93 | 74 dates | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29 +81 more |
Cossatot Reefs Campground sits along the lush banks of Gillham Lake in southwest Arkansas.
Nicknamed the "Bright Spot on the Cossatot," Gillham Lake is a recreational oasis for outdoor enthusiasts.
Visitors enjoy the lake for its vast boating opportunities, and a boat ramp is provided for easy water access. The river can be canoed from a point below the dam to U.S. Highway 71 South, a distance of about 16 miles. For shorter canoe trips, there are access roads to the river at Mize Crossing and Ladd Bridge.
Anglers will find smallmouth, largemouth, and spotted bass, crappie, channel and flathead catfish and various species of sunfish in the river.
A short nature trail within the campground weaves through a quaint wooded section. In spring, the trail is painted with colorful redbud and dogwood blossoms.
Cossatot Reefs offers 31 shady campsites, including a large group shelter. Hot showers, drinking water and flush toilets help create a comfortable camping experience.
Gillham Lake spans 1,370 surface acres and boasts 36 miles of shoreline. The lake stems from the Cossatot River, designated as a National Wild and Scenic River.
From De Queen, Arkansas, head north on US-59/US-71. Continue for nearly 10 miles and turn Right at Gillham EZ-Mart. Turn right on Tower Road; go 1.3 miles turn left onto Gillham Lake road; go 4.3 miles turn right and follow signs into the campground.
View on Recreation.gov ↗ Get directions ↗












Reservations for Cossatot Reefs are made through Recreation.gov. 2,508 of 5,673 tracked site-dates are currently open (44.2%). Campsite Sniper has also detected 45 site openings here in the last 90 days, so further dates may appear. Pick a site or unit 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 5 site-date openings at Cossatot Reefs in the last 7 days, 34 over 30 days and 45 over the last 90.
103 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 01. Confirm and book on Recreation.gov.
27 of the 30 sites that support RV analysis have a recorded maximum of 35 ft or more; the longest recorded is 68 ft. 28 of those 30 sites have a recorded maximum length and 2 do not; they are not counted as fitting.
October 2026, with 812 open site-dates in the current snapshot of 961.
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 Cossatot Reefs. 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.