Equipment & Vehicle Limits Important sizing constraints for your RV, trailer, or tent setup.
Max Vehicle Length 20
Max Num of Vehicles 15
Driveway Surface Paved
Driveway Entry Back-In Capacity & Rules
Max Num of People 100
Min Num of People 1
Capacity/Size Rating Single Site Features
Shade Yes How Site GS1 Compares One of 31 sites at COSSATOT REEFS — 31 of them in the COSSATOT REEFS loop. Fits vehicles up to 20 ft — shorter than 97% of sites here. ADA accessible — one of only 1 accessible sites at this campground. Other sites in the COSSATOT REEFS loop
Photos from COSSATOT REEFS Recreation.gov photos of the campground. Specific site appearance may differ — these show the surrounding area and amenities.
Gillham Lake Cossatot Reefs Park — USACE Gillham Lake Gillham Lake Cossatot Reefs Park — USACE Gillham Lake COSSATOT REEFS Booking Tips for Site GS1 Reservation window: Recreation.gov releases bookings up to 6 months ahead — popular sites go in minutesBest time to book: 8am local time on the day the window opensCancellation: Recreation.gov refund policies apply — check before bookingQuiet hours: typically 10pm–6am in federal campgroundsCheck-in/out: 8:00 AM / 10:00 PMLeave No Trace: pack out all trash, including food scrapsFrequently Asked Questions Can I reserve campsite GS1? Yes — this site is reservable via Recreation.gov. Reservations open up to 6 months in advance and popular sites go fast.
How many people can stay at site GS1? Maximum occupancy is 100 people and 15 vehicles.
What size RV fits at site GS1? Max vehicle length is 20 ft.
What hookups does site GS1 have? Available hookups: electric (20), water.
Is site GS1 ADA accessible? Yes — this site is marked as ADA accessible. Check Recreation.gov for specific accessibility features.
What are the check-in / check-out times? Check-in: 8:00 AM. Check-out: 10:00 PM.
Resources & Reservation Links