US lakes & pondsUS lakes & pondsCampground · Army Corps lake in Benton County, Washington.
| Managed by | US Army Corps of Engineers (John Day Lock and Dam, Lake Umatilla) |
|---|---|
| Campsites | 31 |
| Site types | 30 standard, electric, 1 group standard, no electric |
| RV hookups | Full hookups at 11 sites |
| Longest RV/trailer site | 55 ft |
| RVs welcome | Yes |
| Tent sites | Yes |
| Showers | Yes |
| Toilets | Yes |
| Dump station | Yes |
| Drinking water | Yes |
| Dogs allowed | Yes |
| Phone | (541) 739-1135 |
| Website | www.recreation.gov/camping/campgrounds/233587 |
| Reservations | Recreation.gov |
We only list amenities a source records. A missing item doesn't mean the campground lacks it, so check with Plymouth Campground before you go.
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.
Description: Recreation.gov (U.S. federal government, public domain), shortened.
Lakes and ponds on LakeRipple within 10 miles, closest first (straight-line distance to the shoreline). Each page has boat launches, beaches, fishing and today's weather.
Plymouth Campground is in Benton County.
Sources: Recreation.gov (RIDB) · OpenStreetMap contributors (ODbL). Pulled Oct 12, 2026. Interactive map: Leaflet with © OpenStreetMap contributors. Seasons, rates and rules change; confirm with the campground.