Munson Creek Falls State Natural Site is a day-use park with a short hike to a waterfall. Munson Creek tumbles down the longest waterfall in the Oregon Coast Range. Munson Creek Road leaves the east side of US 101 just north of milepost 73, south of Tillamook, Oregon. Drive a few paved miles and a mile of potholed gravel and follow signage to the parking lot. The trail is only a quarter-mile, and wasn't terribly muddy even on the winter day we visited.
The Coast Range rain forest is green and lovely, and the creek falls an impressive distance down a cliff. The base of the falls feels high enough that I wondered at how the creek arises, so much higher up.
This is a short drive if you're passing by on Highway 101, and a short walk, for a nice scenic payoff. I found Munson Creek Falls well worth the visit.
More at Alltrails, OregonHikers.org, Outdoor Project, TillmookCoast.com, Google Image Search.