Campsite Tonight

Plymouth Park

★4.2(328 reviews)
Auto add-to-cart availableHigh DemandJohn Day Lock and Dam, Lake Umatilla · Plymouth, Washington
🚛Big Rig Friendly🏞️Lake Access🌊River Access🏜️Desert/Canyon🎣Fishing🚣Boating

Sold out? Sites at Plymouth Park open up when campers cancel.

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About Plymouth Park

Plymouth Park is a national park campground at John Day Lock and Dam, Lake Umatilla in Benton County, Washington. Reservations are managed through Recreation.gov. When a booked site here is cancelled it can vanish within minutes, so Campsite Tonight monitors it 24/7 and auto-adds the opening to your Recreation.gov cart before anyone else.

Plymouth Park is in very high demand — sites here routinely sell out well in advance. Cancellations are often the best way in, which is exactly what Campsite Tonight watches for.

The campground accommodates RVs and trailers up to 55 ft. Campers rate it 4.2/5 across 328 reviews.

Reservation Trends - Plymouth Park
Month:

Total reservations in April — 2023: 174 · 2024: 194 · 2025: 107

Booking windows show when reservations are made relative to check-in date
14-Day Availability
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Location

Address

Plymouth, Washington

Coordinates

45.9337, -119.3507

Quick Actions
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Booking Insights

Very high demand - sites typically fill up immediately when the booking window opens. Plan to book the moment reservations open.

  • •July sees 538 reservations - book early or set cancellation alerts.
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Photos

Plymouth Park Campground Aerial View
Plymouth Park Tent Area- Walk up only
Plymouth Park Swim Beach & Day Use Area
Plymouth Park Boat Ramp Facilities
Plymouth Park
Plymouth Park campsite photo 6 - John Day Lock and Dam, Lake Umatilla, Washington

Plymouth Park FAQ

How far in advance should I book Plymouth Park?

Very high demand - sites typically fill up immediately when the booking window opens. Plan to book the moment reservations open. Mark your calendar for when the booking window opens (typically 5-6 months ahead). Also set alerts - cancellations do happen.

What is the busiest time at Plymouth Park?

July typically sees the highest reservation activity at Plymouth Park. During peak times, 100% of reservations are made 2+ weeks in advance.

Are there campsites available at Plymouth Park right now?

Plymouth Park is currently fully booked for the next 14 days. However, cancellations happen frequently - download the Campsite Tonight app to get instant alerts when sites become available.

Where is Plymouth Park located?

Plymouth Park is located in John Day Lock and Dam, Lake Umatilla, near Plymouth, Washington.

Track Availability at Plymouth Park

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