I noticed that this obscure trail was included in the index, and wanted to point to a very interesting description of a kayak descent down the South Fork that begins from this trail:
http://www.oregonkayaking.net/rivers/sf_clack/sf_clack.html
Pete Giordano was part of this rather daring trip! The trail description on this website describes a continuation up the east side of the canyon from the South Fork, but I'm wondering if there were other trails in the area (particularly along the South Fork or Memaloose Creek) that once existed? I mention this because photo of the lower falls is shown on an older MHNF map from the late 1950s. It amazes me that this particular pair of streams was apparently never the focus of a recreation trail, given the proximity to Portland and concentration of waterfalls.
Tom Kloster