Benton Oaks RV is right next to the fairgrounds in Corvallis. This is a very basic RV park, but very adequate. Don't try to stay there if there is an OSU game scheduled, because it will be totally booked. We didn't see any other RV parks in Corvallis, so this tends to be the place to be if you are traveling by RV and need to spend a night in Corvallis. It was very quiet when we were there, but don't know how it would be if there was something big going on at the fairgrounds. We camped here in a Fifth Wheel.
We really enjoy staying in this park. It is a quiet location, conveniently located for visiting Corvallis. A good bike trail runs directly in front of the campground. However, be aware that the campground has only the basics--water, sewer, and electric, plus Wi-Fi and cable, and no special amenities. And occasionally, when the wind is right, a manure smell may blow in from the fields across the road. We camped here in a Fifth Wheel.
This park is located on the Benton County Fairgrounds. An OK park. About 8 good size [60 foot] pull thrus. Nothing fancy. Gravel pads. Good Verizon signal so my broadband card worked well. Good 50 amp service. The park is on the west side of Corvallis, about 1 mile north of Highway 20 on 53rd Street. Local Safeway and Bi-Mart is one mile south. Weekly rate is $150. Monthly is $450. There are some shaded spaces - back-ins - mostly occupied by long term residents. I will stay here again. We camped here in a Motorhome.