Pick a site on the map to see its availability calendar.
Only 33 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 528 tracked site-nights (Sep 18 – Oct 11, 2026): 238 open for online reservation · 238 reserved · 52 unavailable (cause unspecified).
Of the open site-nights on mapped sites, 181 fall on weekdays and 57 on weekends (Fri–Sun).
October holds the most room. 139 of 242 site-nights are still open there.
| 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.
| Site | Open site-nights |
|---|---|
| 006 | 15 |
| 002 | 14 |
| 003 | 14 |
| 005 | 13 |
| 009 | 13 |
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.
The next bookable night is Sep 23; the first open weekend starts Oct 2. Campsite Sniper can watch later dates for you.
Multi-night stays. 56 2-night, 38 3-night, 3 7-night openings where a single site is free for every night, per Campsite Sniper's current snapshot — soonest Sep 23 at site 002.
RV length. Longest recorded site here is 35 ft. 8 sites take 25 ft, 4 sites take 35 ft. 5 sites of 22 have no recorded maximum and are not counted.
| Site | Max RV | Hookups | Open site-nights | Longest run | Dates |
|---|---|---|---|---|---|
| 006 | Not recorded | None | 15 | 8 nights | Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6, Oct 7, Oct 8 +3 more |
| 002 | Not recorded | None | 14 | 8 nights | Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 4, Oct 5, Oct 6, Oct 7, Oct 8, Oct 9 +2 more |
| 003 | Not recorded | None | 14 | 7 nights | Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 5, Oct 6, Oct 7, Oct 8, Oct 9 +2 more |
| 005 | Not recorded | None | 13 | 5 nights | Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6, Oct 7, Oct 8 +1 more |
| 009 | 25 ft | None | 13 | 5 nights | Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6, Oct 7, Oct 8 +1 more |
| 020 | 20 ft | None | 13 | 6 nights | Sep 23, Sep 24, Sep 28, Sep 29, Sep 30, Oct 1, Oct 2, Oct 3, Oct 5, Oct 6, Oct 7, Oct 8 +1 more |
| 022 | 20 ft | None | 13 | 5 nights | Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6, Oct 7, Oct 8 +1 more |
| 024 | 20 ft | None | 13 | 5 nights | Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6, Oct 7, Oct 8 +1 more |
| 004 | Not recorded | None | 12 | 5 nights | Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 4, Oct 5, Oct 6, Oct 7, Oct 8, Oct 11 |
| 012 | 20 ft | None | 12 | 5 nights | Sep 23, Sep 24, Sep 28, Sep 29, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6, Oct 7, Oct 8, Oct 11 |
| 017 | 20 ft | None | 12 | 5 nights | Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 4, Oct 5, Oct 6, Oct 7, Oct 8, Oct 11 |
| 011 | 20 ft | None | 11 | 5 nights | Sep 24, Sep 28, Sep 29, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6, Oct 7, Oct 8, Oct 11 |
| 016 | 25 ft | None | 11 | 5 nights | Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6, Oct 7, Oct 8, Oct 11 |
| 013 | 20 ft | None | 10 | 5 nights | Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6 |
| 018 | 20 ft | None | 10 | 5 nights | Sep 23, Sep 24, Sep 29, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6, Oct 7, Oct 8 |
| 023 | 35 ft | None | 10 | 5 nights | Sep 23, Sep 27, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6, Oct 7, Oct 8, Oct 11 |
| 007 | 32 ft | None | 9 | 5 nights | Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 6, Oct 7, Oct 8 |
| 008 | 35 ft | None | 9 | 5 nights | Sep 23, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6, Oct 7, Oct 8, Oct 11 |
| 010 | 20 ft | None | 8 | 4 nights | Sep 29, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6, Oct 7, Oct 11 |
| 019 | 35 ft | None | 7 | 4 nights | Sep 27, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6, Oct 7 |
| 021 | 25 ft | None | 6 | 3 nights | Sep 28, Sep 29, Oct 6, Oct 7, Oct 8, Oct 11 |
| 014 | 35 ft | None | 3 | 2 nights | Sep 30, Oct 1, Oct 4 |
Spillway Campground is perched along the South Platte River near the base of the dam of Eleven Mile Reservoir. Adventurists and families alike will find things to do here. Birding is excellent, as is hiking. Rock climbers enjoy the solid rocky cliffs of the canyon and fly fishermen find abundant catches in the river.
Hike the Overlook Trail for breathtaking views of Eleven Mile Canyon and Reservoir. Occasionally, Golden Eagles can be viewed nesting in the nearby granite cliffs and crags. Springtime brings higher chances of spotting Bald Eagles.
Visitors enjoy fishing by shore or canoe. Rainbow and brown trout, kokanee salmon and pike are among the species anglers are likely to find.
Spillway Campground offers about 23 reservable campsites. Parking aprons are gravel and can fit a maximum trailer length of 25 feet. Amenities include vault toilets, picnic tables, hand pump for drinking water, and campfire rings.
The campground, at altitude 8,500 feet, is located at the edge of Eleven Mile Canyon, furthest from the canyon entrance. Some campsites are shaded by scattered spruce and ponderosa pine.
Spillway is the closest campground to the Eleven Mile Reservoir, which spans 3,405 surface acres and 5 miles in length. Eleven Mile Canyon was cut by the South Platte River and is bordered by polished gray granite cliffs.
Visitors enjoy the Florissant Fossil Beds National Monument, one of the richest and most diverse fossil deposits in the world. Petrified redwood stumps up to 14 feet wide and thousands of detailed fossils of insects and plants reveal the story of a very different, prehistoric Colorado.
From Lake George, Colorado, turn off of Highway 24 onto County Road 96. Follow the road for about one mile turn right to the Eleven Mile Canyon entrance. Spillway Campground is the last campground which is about 9 miles up Eleven Mile Canyon near the dam.
View on Recreation.gov ↗ Get directions ↗












Reservations for Spillway Campground are made through Recreation.gov. 238 of 528 tracked site-nights are currently open (45.1%). Campsite Sniper has also detected 33 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 12 site-date openings at Spillway Campground in the last 7 days, 28 over 30 days and 33 over the last 90.
38 three-night openings are showing, counting only runs where the SAME site is free for all three nights. The soonest starts Sep 27 at site 003. Confirm and book on Recreation.gov.
4 of the 22 sites that support RV analysis have a recorded maximum of 35 ft or more; the longest recorded is 35 ft. 17 of those 22 sites have a recorded maximum length and 5 do not; they are not counted as fitting.
October 2026, with 139 open site-nights in the current snapshot of 242.
As of the Sep 18, 2026 snapshot: the next open date is Wed, Sep 23 and the next open weekend starts Fri, Oct 2. 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 Spillway Campground. 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.