(Castleberry or Oregon City, 35', 1983, 05-04-B) across Oregon Creek in Oregon City, Butte County, CA. Oregon Gulch (Derrick) Rd. N. 0.1 miles from jct with Oregon City Trl. in Oregon City to the bridge. (6-1-03, N39° 35.63', W121° 31.79') Photo by Jack Schmidt.