Army Corps of Engineers · Washington
Plymouth Park
Army Corps of Engineers · Washington, United States
- Sites
- 33
- Hookups
- 30 electric, 32 with water, 1 no hookups
- Season
- April 15 to October 14
- Max RV length
- 55 ft
- Group sites
- Yes
- Drinking water
- Yes
- Restrooms
- Yes
- Showers
- Yes
- Dump station
- Yes
- Laundry
- Yes
- Pets
- Yes
- Elevation
- 289 ft
- Dark sky
- Bortle class 4
- Cell coverage
- T-Mobile good · AT&T good · Verizon good (carriers' 4G LTE filings to the FCC, 2025-12; not measured here)
- Lake
- John Day Lock and Dam, Lake Umatilla
- Nearest town
- Plymouth
- Address
- Christy RD , Plymouth, WA, 99346
- Phone
- 541-739-1135
- Activities
- Birding, Boating, Camping, Day Use Area, Fishing, Kayaking, Star Gazing, Swimming Site, Tubing, Water Access, Wildlife Viewing
32 numbered sites are mapped one by one - open the site map to pick yours.
About
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.
Weather, month by month
| Month | Typical high | Typical low | Coldest night | Hottest day | Years with a night below 32°F |
|---|---|---|---|---|---|
| January | 41° | 30° | 2° | 59° | 11 of 11 |
| February | 48° | 32° | 12° | 62° | 10 of 11 |
| March | 56° | 38° | 26° | 74° | 3 of 11 |
| April | 63° | 44° | 32° | 84° | 0 of 11 |
| May | 73° | 53° | 43° | 99° | 0 of 11 |
| June | 83° | 60° | 49° | 99° | 0 of 11 |
| July | 96° | 70° | 59° | 110° | 0 of 11 |
| August | 95° | 69° | 59° | 111° | 0 of 11 |
| September | 82° | 60° | 50° | 97° | 0 of 11 |
| October | 67° | 49° | 39° | 81° | 0 of 10 |
| November | 54° | 40° | 26° | 72° | 3 of 10 |
| December | 44° | 31° | 15° | 69° | 9 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
- Umatilla Marina RV Park · City, County & Regional Parks · 1 mi
- Boardman Marina Park RV Campground · City, County & Regional Parks · 19 mi · 67 sites
- Crow Butte Park Campground · City, County & Regional Parks · 25 mi · 50 sites
- Hood Park · Army Corps of Engineers · 25 mi · 68 sites
- Charbonneau Park and Campground · Army Corps of Engineers · 33 mi · 54 sites
All public campgrounds in Washington · Every state and province · Facts read from the operator 2026-07-25. Confirm fees, rules and current status with the operator before you go.