4-O Ranch Wildlife Area Campground
Oregon
Campground in Oregon.
Photos shown are stock images and may not represent the actual campground.
Campground in Oregon.
Rating
Reviews
Plymouth is popular during peak season. Reserve 2-4 weeks in advance for weekends and holidays.
Most parks have check-in after 1:00 PM and check-out by 11:00 AM. Call ahead if you'll arrive late.
Oregon weather can change quickly. Pack layers and check the forecast for Plymouth.
Don't miss local attractions near Plymouth. Ask the camp host for hidden gems and trails.
Mar 18, 2026
Nice smaller COE park on the Columbia River. Restrooms are nice. Men's has 2 porcelain commodes, one urinal, and one shower. Laundry room with one washer, one dryer. The two host ladies were very nice. Two of the sites are 1st come, 1st served the rest must be reserved. An attached island has a boat ramp and picnic area. You could swim there, but I wouldn't recommend it. We stayed the full 14 days... Nice smaller COE park on the Columbia River. Restrooms are nice. Men's has 2 porcelain commodes, one urinal, and one shower. Laundry room with one washer, one dryer. The two host ladies were very nice. Two of the sites are 1st come, 1st served the rest must be reserved. An attached island has a boat ramp and picnic area. You could swim there, but I wouldn't recommend it. We stayed the full 14 days. No fires except for propane. Of salmon are running go to McNary dam and look through the windows of the fish ladder.
Mar 18, 2026
Great little campground for an overnight. Just far enough off the highway for no road noise. Peaceful and quiet. Well maintained. Long, level sites. Full hookups. Bath house looked nice but didn’t use it. We had site 16 which was at the end and thought it was great; no one on our passenger side.
Mar 18, 2026
We have stayed here before and it was well maintained. This time the grass was yellow and dried out. We arrived to find out that the sewer wasn't working at our site. We stayed five days and it was very windy all but one of those days. The day that wasn't windy was crazy with bugs. Anything with a light was covered with them. Mosquitoes were very bad as well. The next morning we had spiders everyw... We have stayed here before and it was well maintained. This time the grass was yellow and dried out. We arrived to find out that the sewer wasn't working at our site. We stayed five days and it was very windy all but one of those days. The day that wasn't windy was crazy with bugs. Anything with a light was covered with them. Mosquitoes were very bad as well. The next morning we had spiders everywhere. Our site had good shade, but I noticed many sites did not. Despite what it may look like on a satellite view there is no access to the water from the campground unless you walk a ways down the road. They have a day use area with gazebos and a swimming beach. There is an old train tunnel within walking distance and McNary Dam has a visitor center and fish viewing area. Overall, Army Corps of Engineers really should keep up on the maintenance better.
Mar 18, 2026
Great price, $15 a night for seniors with pass. So much grass for our two dogs to walk on and sniff. Spots are pull through and paved, nice! Close to freeway but quiet. Trains go by all night but do not too their horns so they weren't annoying at all. This area is our half way spot between Boise and Seattle so will be staying here from now on. A short couple minutes to the freeway. If coming from... Great price, $15 a night for seniors with pass. So much grass for our two dogs to walk on and sniff. Spots are pull through and paved, nice! Close to freeway but quiet. Trains go by all night but do not too their horns so they weren't annoying at all. This area is our half way spot between Boise and Seattle so will be staying here from now on. A short couple minutes to the freeway. If coming from Prosser the highway road is smooth. We took it because Google said to instead of the freeway and had no regrets with our 5th wheel. Nice dump station.
Mar 18, 2026
A nice park but would recommend that you reserved a site. We were late getting a spot and we ended up in the tent overflow area. And 5:am this morning the sprinklers went off. Our stuff got wet, good thing they had a washer and dryer. The lake is right next to some sites but there is boat ramp down the road about 1/2 mile with swimming area. They take America the beautiful discount cards.
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