Portland Or rv parks

Pheasant Ridge is actually in Wilsonville. It is a lovely park, we stayed numerous times when we had children living in Portland. Quiet, very close to major shopping, you could walk, we didn't. There have been complaints that they are very strict with their rules...where to walk the dog, night noise, parking...I found this to be wonderful. I could easily follow the dog regs, nights were nice and quiet, and there was plenty of parking. If you stay there, and if you have time, one day exit to the right, keep right on the back roads, and you will come to one of the few small ferries left in the USA. (operated by the State as a historical landmark). Or you can exit right then go left at the fork and take back roads all the way to Portland. A beautiful half day drive.
Anyway, it was a nice park.

I drive by Pheasant Ridge south of Portland all the time - looks nice but haven't stayed there. Worth a look - it's off of I-5 and south of 205 so you should be able to jump on the 205 to Happy Valley.

Portland Fairview and Sandy River Front both on the east side are decent. We spent winter 2013 in Sandy River and it was pretty decent. Either one is maybe 20 minutes drive from Happy Valley.