Illinois State Parks · Illinois

Big River State Forest

Illinois State Parks · Illinois, United States

Open on the map Drive there Reserve Directions
Showers
No
Pets
Yes
Elevation
568 ft
Dark sky
Bortle class 1
Cell coverage
Verizon weak · T-Mobile none · AT&T none (carriers' 4G LTE filings to the FCC, 2025-12; not measured here)
Nearest town
Keithsburg
Address
1337 Township Rd 2850N, Keithsburg, IL 61443
Phone
(309) 374-2496
Activities
Camping, Equestrian Camping

About

Big River State Forest is an Illinois DNR state park in the Northwest region of Illinois. Camping site types: Class C (vehicular access without showers, or walk-in with shower access); Class D (tent/primitive walk-in or backpack sites, no vehicular access); Equestrian camping. Pets ARE allowed (leashed, with water, never left unattended or in a parked vehicle) - IDNR's general statewide practice, confirmed via Starved Rock State Park's own IDNR FAQ. Reservable online through Illinois DNR's own Explore More Illinois system (camp.exploremoreil.com, redirects to the live recreation.exploremoreil.com/IllinoisWeb/ booking platform). Advance booking requires at least 3 days' notice; most sites are reservable May 1-October 31 (some year-round - confirm per park).

Fees

Class C: $8/night - vehicular access without showers, or walk-in sites with shower access. Class D: $6/night - tent camping or primitive sites (walk-in or backpack), no vehicular access. Equestrian camping available (specific class/rate varies by site). Reservation fee $5/reservation (non-refundable) plus first night's camping fee; camping fees refunded if cancelled online 3+ days before arrival. Discounts (about half the listed camping fee, full utility fee still applies) for Illinois residents 62+ or disabled with a Class 2/2A card; Illinois disabled veterans and POWs camp free aside from the utility fee; no entrance fee to any Illinois state park (dnr.illinois.gov).

Weather, month by month

MonthTypical highTypical lowColdest nightHottest dayYears with a night below 32°F
January30°16°-18°57°11 of 11
February37°21°-16°66°11 of 11
March51°33°9°76°10 of 11
April62°41°26°81°5 of 11
May74°57°41°91°0 of 11
June85°66°50°94°0 of 11
July86°70°61°95°0 of 11
August84°68°58°93°0 of 11
September81°62°53°95°0 of 11
October63°47°30°85°2 of 10
November52°33°10°74°7 of 10
December39°27°-9°70°10 of 10

Mid-month figures from 2016–2026 of daily weather at this spot (ERA5 reanalysis via Open-Meteo, CC BY 4.0), in °F. Typical is the median; coldest and hottest are the extremes seen.

Nearby campgrounds

All public campgrounds in Illinois · Every state and province · Facts read from the operator 2026-08-25. Confirm fees, rules and current status with the operator before you go.