OK, I'll be honest that this park doesn't fit into my favorite campgrounds list. But there is a lot to recommend it as a stopping point when going over the North Cascades Highway (WA SR-20).
The park has water and electric hookups, no sewer. The bathrooms are not spectacular and they don't have showers. Sounding negative at the moment. But when doing the Cascades loop, there are some good pluses.
Nice level sites, most are pull through. Our first stop we didn't even unhook the trailer, just cranked the jack stand down and put out the rear stands. Took 5 minutes from out the door to pulling away.
15 and 30 amp hookup.
$15 a night.
Short walk to the river.
Dog park right across the street.
7 miles down the road in Burlington is a donation only RV dump site just off Hwy 20 and there also is a Camping World in Burlington. Between Sedro Woolley and Burlington there are also two RV repair and rebuild shops; the one nearest Sedro Woolley has been in business for many years.
Once leaving Sedro Woolley going east, the towns get much smaller and don't have as many amenities available.
Just take Township off Hwy 20 into town, keep going and you'll see the park.
A good location to start a day going over the Cascades, or a good location to finish the day.