No detected openings were recorded in the last 90 days. Campsite Sniper monitors John C. Briscoe Group Use continuously and will alert you if that changes.
Of the 148 tracked site-dates (Sep 18 – Nov 30, 2026): 12 open for online reservation · 8 reserved · 128 unavailable (cause unspecified).
Where the open windows are
Load status
Sep 18 – Nov 30, 2026Of the open site-nights on mapped sites, 1 fall on weekdays and 2 on weekends (Fri–Sun). The split covers the 3 open site-nights on mapped sites; 12 site-dates are open across all monitored inventory.
Open dates by month
Sep 2026 – Nov 2026October shows no online availability. 0 of 62 tracked site-dates are open there — 62 unavailable.
Holiday windows
Sites open per night · of 1 site| 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.
Holiday windows — day use
Units open per date · of 1 day-use unit| 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 | 0 | None open |
| FRI Nov 27 | 0 | None open | |
| SAT Nov 28 | 0 | None open |
Labor Day: no online availability on any tracked date. Thanksgiving: no online availability on any tracked date.
Availability
Most open site-nights · tracked window| Site | Open site-nights |
|---|---|
| Group Campground | 3 |
This site currently has 3 site-nights available.
Availability by day-use unit
Most open reservation dates · tracked window| Unit | Open reservation dates |
|---|---|
| GS1 | 9 |
This day-use unit currently has 9 reservation dates available.
Next windows
As of Sep 18, 2026 snapshotThe 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
1 overnight site 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.
RV length. Longest recorded site here is 60 ft. 1 site takes 25 ft, 1 site takes 35 ft, 1 site takes 40 ft.
All 1 site with current availability
| Site | Max RV | Hookups | Open site-nights | Longest run | Dates |
|---|---|---|---|---|---|
| Group Campground | 60 ft | Yes | 3 | 1 night | Sep 20, Sep 23, Sep 27 |
Day-use inventory
All 1 day-use unit with current availability
| Unit | Open reservation dates | Consecutive dates | Dates |
|---|---|---|---|
| GS1 | 9 | 8 dates | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 27 |
About John C. Briscoe Group Use
Overview
The scenic John C. "Jack" Briscoe Group area, previously named the M.W. Boudreaux Group Area, is an ideal place for families and groups to explore and enjoy Mark Twain Lake.
More than 2 million visitors travel to the Mark Twain lake region to enjoy the overall magnetism of the area, thanks in part to the author's beloved classics, "The Adventures of Tom Sawyer" and sequel, "Adventures of Huckleberry Finn."
Recreation
Fishing, boating and hunting are very popular at John C. Briscoe. Deer and turkey are common wildlife, and bass is the most popular catch in the lake.
Facilities
The John C. "Jack" Briscoe Group Use Area includes the entire campground, excluding the picnic shelter. The campsites offer paved parking for RVs, a shaded area for tent campers and an open area for sporting activities. All sites have electric hookups.
Natural Features
Mark Twain lake is large reservoir fed by the waters of the Salt River in northern Missouri. A variety of recreation areas line the lake, in addition to Mark Twain State Park on the western edge of the lake.
Nearby Attractions
Beside the lake is the village of Florida, where Mark Twain was born. Twenty-five miles east is the town of Hannibal, where visitors can tour the author's boyhood home.
Getting there
From Hannibal, MO, travel west on highway 36 for 17 miles, then continue south on Route J and head south 10 miles. From Perry, travel north on Rt. J for 9 miles.
View on Recreation.gov ↗ Get directions ↗
Photo gallery
FAQ
How do I get a reservation at John C. Briscoe Group Use?
Reservations for John C. Briscoe Group Use are made through Recreation.gov. 91.9% of tracked site-dates are not currently open for online reservation; 12 of 148 remain open. 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.
Does Campsite Sniper book this facility 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.
Which sites at John C. Briscoe Group Use fit a 35-foot RV?
1 of the 1 site that support RV analysis has a recorded maximum of 35 ft or more; the longest recorded is 60 ft.
Which month has the most availability at John C. Briscoe Group Use?
September 2026, with 12 open site-dates in the current snapshot of 26.
When is the next open date at John C. Briscoe Group Use?
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.
Stop refreshing. Let the app watch it.
Lakefront, hookups, your RV length, weekends only - set it as picky as you want.
We run paced availability checks for John C. Briscoe Group Use. 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.