Plymouth Park

John Day Lock and Dam, Lake Umatilla, WA · ≈7.1 mi to Hermiston
Sites
33
Max rig
55 ft
Pull-through
Yes
Hookups
50A
Access
To town
7.1 mi
Signal

✓ Best for

  • Big rigs and large RVs
  • Water recreation enthusiasts
  • Boating, fishing, kayaking lovers
  • Pet owners
  • Full hookup seekers

✕ Not ideal for

  • Guests requiring ADA accessibility
  • Those needing town proximity

Connectivity

Best bet: T-MobileStrong 5G signal here · 3 of 3 carriers reach here
Verizon5G
AT&T5G
T-Mobile5G
Rig compatibility

Will your rig fit?

Checked against every site's real dimensions.
Your RV length
35ft
35 ft
Your fit summary
See availability →

1 of 33 sites don't report a length.

Amenities & features

Amenities
Campfires allowedElectric hookupsFire pitsPets allowedPicnic tablesSewer hookupsShadeWater hookups
Activities
BirdingBoatingCampingDay Use AreaFishingKayakingStar GazingSwimming SiteTubingWater AccessWildlife Viewing
CampIntel Score

How we score

We score what we can verify.
Excellent for large RVsRig fit
Some travel requiredAccess
Well-equippedConvenience
Verdicts come from our Rig fit, Access & Convenience sub-scores — each built only from verifiable Recreation.gov data.

Where it is

Nearest town: Hermiston, ~7.1 miGet directions ↗

Photos

Photos: U.S. Army Corps of Engineers , U.S. Army Corps of Engineers

Overview

Overview Plymouth Campground is located by the small town of Plymouth, Washington. The day use area and boat launch are on a small island on Lake Umatilla on the Columbia River. Popular activities in the area include fishing, swimming, boating, water skiing and hunting. Recreation Visitors enjoy boating, water sports and swimming in the river. Anglers fish for Chinook, steelhead, walleye, sturgeon, and shad. The boat ramp is located at the day use area for convenient river access. Facilities The campground offers 32 sites with electric hookups. Amenities include flush and pit toilets, showers, drinking water, a dump station and playground. The day use area has a swim beach, boat ramp, flush toliets, vault toliet and courtesy dock. Natural Features The park is situated in a high desert environment on an island on the Columbia River. The island is covered with tall sage and Russian Olive trees, but shade is limited. Wildlife is abundant in the area, and mule deer, waterfowl and raptors are commonly seen. Nearby Attractions McNary Dam and Visitor Center and Lake Wallula are two miles upstream from the campground. The lake offers additional opportunities for boating, swimming and fishing.

Managed by US Army Corps of Engineers · Developed campground