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Only 48 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 105 tracked site-nights (Sep 18 – Sep 20, 2026): 60 reserved · 45 on sites not offered for online reservation (first-come, first-served or administrative).
Of the 105 tracked site-nights (Sep 18 – Sep 20, 2026): 60 reserved · 45 on sites not offered for online reservation (first-come, first-served or administrative).
No 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.
| 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.
Riverside Campground is on the banks of the Henry's Fork of the Snake River, just 15 miles north of Ashton, Idaho. Beautiful Island Park is nearby, where visitors enjoy boating, fishing and exploring local trails.
Please click here for further information about the facility and recreation opportunities in the area.
Henry's Fork has great fly-fishing for rainbow and brook trout. Tubing, canoeing, kayaking and rafting are also popular activities on the river.
The campground offers one group site that can accommodate up to 40 people. Several single family sites are also available, each equipped with a picnic table, campfire ring and grill.
Vault toilets, drinking water and trash collection are provided but there is no electricity. Firewood is available for purchase from the host. Gas and groceries are 8 miles away.
The campground is situated along the Henry's Fork at an elevation of 6,200 feet. Lodgepole pines provide partial shade and aspens dot the landscape. Summer wildflowers are abundant. A variety of wildlife, including moose and deer, is frequently spotted throughout the area.
Island Park has outdoor activities for visitors of all ages. Hundreds of miles of hiking, biking, horseback riding and ATV trails crisscross the area. Island Park Reservoir and Henry's Lake are nearby, with boat ramps, fish cleaning stations, boating, water skiing and fishing.
Yellowstone and Grand Teton National Parks are close enough for a day trip. Both parks offer hiking and fishing in breathtaking natural settings.
From Ashton, Idaho, travel north on Highway 20 for 15 miles, take Riverside Campground turnoff, travel 1 mile to the campground entrance.
View on Recreation.gov ↗ Get directions ↗






Campsite Sniper's current snapshot shows none of the 105 tracked site-nights open for online reservation at Riverside (id - Targhee). That can mean dates are reserved, closed, not yet released, or offered first-come, first-served rather than online. Campsite Sniper has also detected 48 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.
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 10 site-date openings at Riverside (id - Targhee) in the last 7 days, 31 over 30 days and 48 over the last 90.
29 of the 35 sites that support RV analysis have a recorded maximum of 35 ft or more; the longest recorded is 40 ft.
As of the Sep 18, 2026 snapshot, none of the 105 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.
Lakefront, hookups, your RV length, weekends only - set it as picky as you want.
We run paced availability checks for Riverside (id - Targhee). 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.