2
Pull-thru
USACECarlyle Lake · Illinois
Boulder Campground
Overview Boulder Campground is situated on the eastern shore of Carlyle Lake, a prime getaway for city-dwellers and families.
Sites82all reservable
Elev.453ft
Comf.Mar-Nov9 months
Max rig101 ft2 pull-thru
Electric8282×50-amp
From Springfield2h34real road time
The honest read
Synthesized from
RIDB · Open-Meteo
OSM · OSRM
Updated 2026-05-27
RIDB · Open-Meteo
OSM · OSRM
Updated 2026-05-27
At 453 ft, Boulder Campground has a 9-month comfortable window (Mar-Nov). Winter nights average around 28°F, so the shoulder seasons turn cold fast. All 82 sites are reservable in advance, so plan ahead. Popular weekends book out. Of the sites, 2 pull-through, 82 with 50-amp, and the longest takes a 101-ft rig. Within about 4 miles: lake or river access.
The campground at a glance
01 · CHARACTER
Reads strongest on reservability and shade. Softest on roomy sites.
Six axes, each scored relative to every other federal campground in the region: quiet (miles to a major road), cool (elevation), roomy (average site spacing), shade, RV-fit (longest rig), and how reservable it is. All six come from data, nothing hand-tuned.
When to go
02 · CLIMATE
avg highavg lowfrost-freedriest · Sep
Mar-Nov
Comfortable window: nights stay above 35°F, days below 90°F.
69%
Of summer weekend-days are dry.
Mar 24
Last spring frost; first fall frost Nov 11.
72°F
Average July low.
Getting there
03 · ACCESS
01
Springfield
111 mi
2h34
02
Chicago
274 mi
5h16
By drive time
Routed road time (OSRM). Nearest major highway 5.4 mi away.
Picking your site
04 · 82 SITES
Color byShow only
82 mapped sites · dot color = seclusion · click a dot for details. Basemap © OpenStreetMap.
0
Walk-in
82
50-amp
2
Accessible
0
Prime
82
Sites
★ The standout
Site 020
BOULDER CAMPGROUND · shaded.
To neighbor
111 ft
Max rig
50 ft
Type
Standard
What's within four miles
05 · TRAILS · PEAKS · WATER
Trails & Peaks
Trail segments
23
Water & Access
Lake / river access
yes
To nearest major road
5.4 mi
Method
We synthesize public data layers: RIDB and Recreation.gov facility and site records, Open-Meteo climate normals, OpenStreetMap roads, trails, and water, OSRM drive times, and USGS elevation. We take no bookings, no ads, and no paid placements. Independence is the entire point.