The official name is Little North Santiam River, but it is more commonly referred to as Opal Creek. It is among the prettiest drainages in the Oregon Cascades. We currently have five routes listed. There is potential for more.
The lower part of Opal Creek is a nontechnical hike and swim canyon with some very beautiful parts. Since there are various access points, you can do the parts that most interest you. Upper Opal Creek is more technical with waterfalls to rappel. It's an all day commitment requiring a car shuttle.
Henline Creek is the local classic. Every Oregon canyoneer will eventually do it. There are lots of waterfalls and an occasional jump or slide. Allow all day for the whole thing. Gold Creek has, in my opinion, little to recommend it, but is included any way in case you are interested in something very short and easy. The East Fork of Stack Creek has recently been done for the first time. It has a small drainage so it can be done when other canyons are flowing with too much water.
There are several potential canyon prospects in the area. Tincup Creek, the West Fork of Stack Creek, and Horn Creek all flow into the north side of Opal Creek and have good road access at their lower ends on Forest Service Road 2209. They also have small watersheds and may dry up in summer. Sullivan Creek is a tributary of Cedar Creek and has easy road access. There is a long beautiful waterfall at the bottom next to Forest Service Road 2207. Battle Ax Creek is a tributary of Opal Creek and joins it at Jawbone Flats. It is quite long and has an unknown number of waterfalls. A trail more or less parallels it for most of its length. This might be the next big canyoning route in the area.