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South Marcum Campground

Rend Lake — lakeside, fishing

Location: Benton, IL, IL

Price: From $16 per night

Price range: $16–$44 per night

Rating: 4.5 out of 5 (718 reviews)

Season: May through October

South Marcum Campground is located on the south-eastern shore of Rend Lake— the perfect place to enjoy a wide variety of activities, events, and nature at its best. Rend Lake is made up of 20,633 acres of water and 19,523 acres of land. Whether you’re looking for high adventure, a peaceful retreat, or something in between, you’ll find it here in the heart of Southern Illinois.South Marcum Campground offers 158 reservable campsites each equipped with a picnic table and a firepit.

Cell coverage (FCC estimate): strong signal. Actual signal may vary in remote areas. Best carrier: T-Mobile. Verizon 4G: 100%. AT&T 4G: 100%. T-Mobile 4G: 100%.

Amenities: Fire Rings, Picnic Tables, Flush Toilets, Drinking Water, Showers, Dump Station, Electric Hookups, Fishing, Boat Launch

Availability alerts: Set a free cancellation alert at camperwatch.org/campground/south-marcum-campground to be notified when sites open up.

South Marcum Campground sits on the southeastern shore of Rend Lake's 20,633 acres with paved bike trails, boat launch access, and a 4.6/5 rating from 172 campers who praise its level sites, privacy, and recreational variety including biking, fishing, boating, and swimming.

Wildlife alert: White-tailed Deer, Wild Turkey, Red-headed Woodpecker, Eastern Gray Squirrel, American Goldfinch, Spiny Softshell, and Midland Watersnake observed in the area.

Insider tips for South Marcum Campground: Book early—this is a popular federal campground with high demand. Request sites in Beaver Lodge Loop for nice shower/restroom combos and easy lake access. Paved bike trails available on-site for recreational cycling.

Skip South Marcum Campground if: You need water or sewer hookups—only select sites have electric hookups; most sites have no hookups.. You want to bank fish—rocky shoreline limits sandbar fishing spots.. You're visiting outside May-October—campground is seasonal..

Best time to visit South Marcum Campground: May-October — Campground operates seasonally May through October only..

Nearby campgrounds: Dale Miller Youth (BENTON, IL), South Marcum Day Use (BENTON, IL), North Marcum Day Use Area (BENTON, IL), Dam West Area (Day-Use) (BENTON, IL).

Cell Phone Coverage at South Marcum Campground

Cell signal at South Marcum Campground (Benton, IL): strong overall signal based on FCC broadband data. Best carrier: T-Mobile.

  • Verizon 4G LTE: 100% coverage
  • AT&T 4G LTE: 100% coverage
  • T-Mobile 4G LTE: 100% coverage

Coverage data source: FCC Broadband Data Collection (BDC). Actual signal may vary due to terrain, tree cover, and distance from towers. Camper reports are more reliable than coverage maps in remote areas.

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CamperWatch›IL›South Marcum Campground
South Marcum Campground — photo 1
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Rend Lake — lakeside, fishingLive availability via Recreation.gov· synced every 30 min

South Marcum Campground

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Benton, IL, IL★ 4.5 (718 reviews)From $16/nightFederal campground · book on Recreation.gov
On this page ↓OverviewConditionsPlan Your TripCommunity

South Marcum Campground is located on the south-eastern shore of Rend Lake— the perfect place to enjoy a wide variety of activities, events, and nature at its best. Rend Lake is made up of 20,633 acres of water and 19,523 acres of land. Whether you’re looking for high adventure, a peaceful retreat, or something in between, you’ll find it here in the heart of Southern Illinois.South Marcum Campground offers 158 reservable campsites each equipped with a picnic table and a firepit.

Best for:AnglersBoatersFamiliesSites:TentRV
LIVE · weather + fire + AQI + availability + wildlife

Verified facts

RIDB / Recreation.gov official database
Check-in2:00 PM
Check-out12:00 PM
SeasonMay through October
Stay limit14 days
Max RV94 ft
Hookups146 electric sites
ADA sites6 sites
PetsAllowed
CampfiresAllowed
Max/site6 people

Amenities

RIDB /facilities /campsites · owner-verified
Essentials
Fire RingsDrinking WaterElectric Hookups
Recreation
Picnic TablesShowersFishing
Family & Pets
Flush ToiletsDump StationBoat Launch

Straight talk

CamperWatch intel · curated from camper reports

Known issues, each with the workaround. Read before you book.

Known issuesFederal campground — book early. No hookups at most sites. Seasonal operations.
Skip it if:✕ You need water or sewer hookups—only select sites have electric hookups; most sites have no hookups.✕ You want to bank fish—rocky shoreline limits sandbar fishing spots.✕ You're visiting outside May-October—campground is seasonal.

Insider tips & when to go

CamperWatch intel · hand-curated entry

Book early

this is a popular federal campground with high demand.

Request sites in Beaver Lodge Loop for nice shower/restroom combos and easy lake access.

Paved bike trails available on-site for recreational cycling.

Best: May-October

Campground operates seasonally May through October only.

Things to do nearby

RIDB /activities /recareas + intel

Conditions today

Live
at campground coordinates

Cell signal

FCC BDC · quarterly dataset
T-Mobile
4G · 100%
Verizon
4G · 100%
AT&T
4G · 100%

FCC maps are theoretical — camper reports confirm signal. Best carrier: T-Mobile.

Wildlife nearby

iNaturalist · research-grade · 8 km
Alert: White-tailed Deer, Wild Turkey, Red-headed Woodpecker, Eastern Gray Squirrel, American Goldfinch, Spiny Softshell, and Midland Watersnake observed in the area.

Location

Leaflet · OpenStreetMap tiles
Open in OpenStreetMap ↗
618-724-2493· Rend Lake
Getting there →

From I-57 take exit 71 and turn west onto Highway 14. After 3 miles turn right on Rend City Road, then right on Rend Lake Dam Rd. Continue 3 miles to the park entrance on the left.

Campground entrance

Google Maps API

Community

#community · posts, photos & Q&A · AI-moderated (Claude Vision)

Pro tips

  • Book on recreation.gov exactly 6 months ahead at 10am ET — Rend Lake fills fast in peak season.
  • Check current road conditions at Rend Lake before arrival — seasonal closures common.

Frequently asked questions

RIDB facts + intel · FAQPage schema, speakable
How much does South Marcum Campground cost per night?+
South Marcum Campground costs $16–$44 per night. Hookup options: Electric hookups on select sites. No water/sewer.
What season is South Marcum Campground open?+
South Marcum Campground is open May through October. Check-in is 2:00 PM, check-out is 12:00 PM.
Does South Marcum Campground have hookups?+
Electric hookups on select sites. No water/sewer.
What is the maximum RV length at South Marcum Campground?+
South Marcum Campground can accommodate RVs up to 94 feet.
How do I make reservations at South Marcum Campground?+
South Marcum Campground is a federal campground — book 6 months ahead at Recreation.gov. Set a free CamperWatch cancellation alert to be notified the moment a site opens.
What is the cell service like at South Marcum Campground?+
According to FCC coverage maps, cell signal at South Marcum Campground is rated strong. Best carrier: T-Mobile. FCC maps show theoretical coverage — actual signal in remote or heavily forested areas may be weaker.
What season is South Marcum Campground open, and what are check-in times?+
South Marcum Campground is open May through October. Check-in is 2:00 PM, check-out is 12:00 PM.

Official resources

South Marcum Campground MapTitle 36, Chapter III, Part 327-Rules and Regulations Governing Public UseRend Lake Park Information Guide 2026
Compare campgroundsPlan a multi-stop trip
●Data sources on this page
Recreation.gov — Live site availability — updated every 30 min
recreation.gov · RIDB API
National Weather Service — Live hourly forecast + active alerts
api.weather.gov · open-meteo.com
Google Air Quality API — Live AQI at exact campground coordinates
airquality.googleapis.com
iNaturalist — Research-grade wildlife within 8km
api.inaturalist.org
Google Pollen API — Today’s tree, grass & weed pollen forecast
pollen.googleapis.com
FCC Broadband Map — Verizon, AT&T, T-Mobile 4G/5G coverage data
broadbandmap.fcc.gov · quarterly
Sunrise-Sunset.org — Sunrise, sunset & golden hour for today
api.sunrise-sunset.org
Google Street View — Campground entrance & access road imagery
maps.googleapis.com
RIDB — ADA sites, hookups, toilets, pets, campfire rules, bear boxes, max RV, activities, contact, directions
ridb.recreation.gov · /facilities /campsites /activities /links /recareas

CamperWatch never fabricates data. Where data is unavailable, it is not shown.

$16 /night★ 4.5 (718)
SeasonMay through October
Check-in2:00 PM
Check-out12:00 PM
Reserve on Recreation.gov ↗
Dates full? Get an availability alert
FAQ
How much does South Marcum Campground cost per night?+
What season is South Marcum Campground open?+
Does South Marcum Campground have hookups?+
All 7 questions →

Nearby Campgrounds

Dale Miller Youth

BENTON, IL

From $150/night

South Marcum Day Use

BENTON, IL

From $30/night

North Marcum Day Use Area

BENTON, IL

From $30/night

Dam West Area (Day-Use)

BENTON, IL

From $30/night

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$16–44 /nightNo booking fees
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