Openings · last 7 days
0
01 · Detected Opening History · the openings record · file CS-233651
When Thomson Causeway reopens
Thomson Causeway's openings record: every site-date Campsite Sniper detected turning available, logged and time-stamped. Refreshed hourly.
Openings · last 30 days
103
Openings · last 90 days
560
Weekday pattern
Detected openings by day of week · 90dNo strong weekday pattern is evident in the openings Campsite Sniper has detected: 560 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 00:00 and 19:00 local-time hours. Those hours contained 134 of 560 detected openings (23.9%). Hours show when Campsite Sniper first detected each opening, in Central 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 5 days before the stay date; the middle 50% land 2–12 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 |
|---|---|---|
| 058 | 22 | 3.9% |
| 061 | 20 | 3.6% |
| 049 | 18 | 3.2% |
| 091 | 17 | 3.0% |
| 021 | 13 | 2.3% |
Site 058 had the most detected openings in the last 90 days: 22. One free watch covers every site here.
02 · Availability Outlook · May 1 – May 3, 2027 · of 128 monitored sites
Of the 384 tracked site-dates (May 1 – May 3, 2027): 341 open for online reservation · 43 reserved.
Where the open windows are
11.2% of tracked site-dates are not currently open for online reservation. 341 of 384 remain open; here is where they are.
Load status
May 1 – May 3, 2027Not open online11.2%
Open site-dates341 / 384
Reserved (of online inventory)43 / 384
Weekday openings113
Weekend openings222
Of the open site-nights on mapped sites, 113 fall on weekdays and 222 on weekends (Fri–Sun). The split covers the 335 open site-nights on mapped sites; 341 site-dates are open across all monitored inventory.
Open dates by month
May 2027 – May 2027May holds the most room. 341 of 384 site-dates are still open there.
Holiday windows
Sites open per night · of 126 sites| Window | Night | Sites open | Status |
|---|---|---|---|
| Memorial Day | FRI May 28 | 0 | None open |
| SAT May 29 | 0 | None open | |
| SUN May 30 | 0 | None open | |
| MON May 31 | 0 | None open |
Memorial Day: no online availability on any tracked night.
Holiday windows — day use
Units open per date · of 2 day-use units| Window | Date | Units open | Status |
|---|---|---|---|
| Memorial Day | FRI May 28 | 0 | None open |
| SAT May 29 | 0 | None open | |
| SUN May 30 | 0 | None open | |
| MON May 31 | 0 | None open |
Memorial Day: no online availability on any tracked date.
Best-availability sites
Most open site-nights · tracked window| Site | Open site-nights |
|---|---|
| 001 | 3 |
| 002 | 3 |
| 003 | 3 |
| 004 | 3 |
| 005 | 3 |
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.
Availability by day-use unit
Most open reservation dates · tracked window| Unit | Open reservation dates |
|---|---|
| Octagon | 3 |
| Stone | 3 |
The 2 day-use units with the most open reservation dates in the current snapshot. Pair a bookable date with a free alert to cover everything else.
Tracked window
CoverageCampsite Sniper's data for this facility starts May 1, 2027. That is about 180 days after the current snapshot was taken, so dates before May 1, 2027 are not covered by what Campsite Sniper tracks here — they are not known to be unavailable. The site-dates shown on this page describe May 1, 2027 onwards only. Check Recreation.gov for earlier dates.
Stays and site detail
335 open site-nights across 113 sites at Thomson Causeway, from the same hourly snapshot as everything above.
126 overnight sites and 2 day-use units are represented in the current inventory. Day-use units are excluded from every night-based figure on this page — site-nights, longest runs, multi-night stays, holiday stays and RV fit; their reservation dates are listed separately below.
Multi-night stays. 111 2-night, 111 3-night openings where a single site is free for every night, per Campsite Sniper's current snapshot — soonest May 1, 2027 at site 001.
RV length. Longest recorded site here is 99 ft. 120 sites take 25 ft, 104 sites take 35 ft, 88 sites take 40 ft. 5 sites of 126 have no recorded maximum and are not counted.
Showing 60 of 113 sites with current availability
| Site | Max RV | Hookups | Open site-nights | Longest run | Dates |
|---|---|---|---|---|---|
| 001 | 45 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 002 | 40 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 003 | 80 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 004 | 40 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 005 | 30 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 006 | 40 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 007 | 40 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 008 | 40 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 009 | 30 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 010 | 40 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 011 | 30 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 012 | 50 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 013 | 30 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 014 | 30 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 015 | 30 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 016 | 40 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 017 | 35 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 018 | 50 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 019 | 35 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 020 | 40 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 021 | 40 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 022 | 35 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 023 | 40 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 024 | 40 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 025 | 40 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 026 | 40 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 027 | 40 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 028 | 40 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 034 | 30 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 035 | 30 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 036 | 40 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 037 | 50 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 038 | 60 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 039 | 40 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 040 | 40 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 041 | 30 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 042 | 50 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 043 | 40 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 044 | 40 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 045 | 40 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 046 | 40 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 047 | 40 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 048 | 40 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 050 | 45 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 052 | 30 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 053 | 35 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 054 | 30 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 055 | 30 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 056 | 32 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 057 | 28 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 062 | 40 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 063 | 38 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 064 | 42 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 066 | 38 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 070 | 40 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 071 | 50 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 072 | 54 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 073 | 36 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 074 | 70 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| 075 | 40 ft | Yes | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
Day-use inventory
6 available reservation dates across 2 day-use units. Day-use inventory is reserved by the date, so it carries no stay length.
All 2 day-use units with current availability
| Unit | Open reservation dates | Consecutive dates | Dates |
|---|---|---|---|
| Octagon | 3 | 3 dates | May 1, 2027, May 2, 2027, May 3, 2027 |
| Stone | 3 | 3 dates | May 1, 2027, May 2, 2027, May 3, 2027 |
About Thomson Causeway
Overview
Thomson Causeway provides the unique experience of island camping on the great Mississippi River and it's well worth a try!
The western edge of the recreation area offers visitors an unobstructed view of the widest spot on the Upper Mississippi River Basin, 3.5 miles from shore-to-shore. Here, campers can enjoy memorable views of the river and the valley, and partake in plenty of great water activities.
Recreation
Popular activities include fishing, hiking, hunting, biking and boating. Common fish species include the channel catfish, bluegill, walleye, large mouth bass, and northern pike. The Central Trail section of the famous Mississippi River Trail passes beside the campground, offering visitors miles of walking and biking trails along the river bank.
Facilities
Of the 125 reservable campsites, 120 have electric hookups and 5 campsites do not have electric hookups and are for tents only. Campsites in the Hickory, Potters South, and Potters North camping loops have water available at each individual campsite. Thomson Causeway provides the comforts of modern camping, including drinking water, an accessible flush toilet, electrical hookups, shower house and boat ramp, while still providing visitors with an authentic outdoor experience. This park also offers 2 reservable picnic shelters for day use.
Natural Features
The campground is built mainly on an island in the backwaters of the Mississippi River. Slow moving water on the eastern edge of the main recreation area creates a rich environment in which wildlife and fish abound.
Nearby Attractions
Head northbound along the river to see the Ayers Sand Prairie State Nature Preserve or the Mississippi Palisades State Park.
Visit the Ingersoll Wetlands Learning Center and Fulton's Dutch Windmill. Or watch a minor league baseball game at the Clinton Lumberkings stadium.
128 monitored sitesRVs up to 99 ft121 with hookups125 shadedPets OKFire pitsMax party 6
Getting there
Take IL State Route 84 to Thomson, Illinois. Turn west onto Main Street, then turn south onto Lewis Avenue.
Po Box 398, Thomson, IL 61285815-259-3628
BikingCampingDay Use AreaFishingHikingHunting
View on Recreation.gov ↗ Get directions ↗
03 · Field Photos · roll CS-233651 · facility + sites
Photo gallery
Roll CS-233651 · Thomson Causeway · Thomson IL12 frames · facility + sites
FAQ
How do I get a reservation at Thomson Causeway?
Reservations for Thomson Causeway are made through Recreation.gov. The current snapshot shows substantial availability: 341 of 384 tracked site-dates are open (88.8%), though availability can change. Campsite Sniper has also detected 560 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.
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 Nov 2, 2026 18:20 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 Thomson Causeway?
Campsite Sniper detected 560 site-date openings here over the last 90 days, none in the last 7. A free alert watches around the clock and pings you the moment one appears.
Can I get a multi-night stay at Thomson Causeway?
111 three-night openings are showing, counting only runs where the SAME site is free for all three nights. The soonest starts May 1, 2027 at site 001. Confirm and book on Recreation.gov.
Which sites at Thomson Causeway fit a 35-foot RV?
104 of the 126 sites that support RV analysis have a recorded maximum of 35 ft or more; the longest recorded is 99 ft. 121 of those 126 sites have a recorded maximum length and 5 do not; they are not counted as fitting.
Which month has the most availability at Thomson Causeway?
May 2027, with 341 open site-dates in the current snapshot of 384.
How far ahead of a stay do openings appear at Thomson Causeway?
Half of the openings Campsite Sniper detected appeared at least 5 days before the stay date; the middle 50% landed 2-12 days out. Campsite Sniper can monitor future changes for dates you select.
When is the next open date at Thomson Causeway?
Campsite Sniper cannot answer that from the current snapshot. The availability data held for Thomson Causeway begins May 1, 2027 — about 180 days after this snapshot was taken, so any earlier dates are outside what Campsite Sniper is tracking here rather than known to be unavailable. Check Recreation.gov for dates before May 1, 2027.
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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.