I am not sure if these falls were ever visible from the old highway or not. With the new I-84 bridges blocking the view from Moffett Creek, it is hard to tell. I suspect that they may have been visible, or easily accessed via a long, lost trail, since they did appear as a "major" falls on the old maps.... Less trees back then and so-forth and such... However, looking at Google Earth, it is pretty far up the canyon.
Wahe Falls is the final of a series of nearly a dozen waterfalls along Moffett Creek in the heart of the Columbia River Gorge. The falls plunge about 80 feet over an amphitheater basalt formation, common at most waterfalls in the Gorge. Moffett Creek doesn't have a terribly large drainage, but it moves a fair amount of water in the wet season. Evidence of a significant flash flood of some kind was seen at the base of the falls in the form of significant scouring along the stream bed and it appears several trees that formerly stood around the falls have been washed away. During the spring carpets of Yellow Fawn Lilies can be seen growing on top of a series of huge boulders encountered shortly before the falls are seen.
Known Alternate Names: Moffett Falls, Moffett Creek Falls
Height: 80 feet
While I am confident that the first falls on Moffett Creek is the historical Wahe Falls, today it is more commonly known by the name Moffett Creek falls or, sometimes, Kahonee Falls or Ka-Ho-Nee Falls.
There is no trail to where you are going. The Munra Point Trail, which is a little east of the footbridge will not help you. The sides of the canyon are dangerous. You must follow the creek.
There is no trail! Expect mud, slippery and loose rocks, slippery and loose trees, etc. A stout walking staff is invaluable for balance.
There are no bridges, except the one at the head of the creek. We had to cross the creek seven times. Sometimes you can cross on fallen trees. Sometimes you must wade. The water is cold. It's deep in spots. It's fast flowing in spots. Tree snags may be unstable.
This is a deep valley/canyon. Your GPS will have trouble getting a lock. Your FRS radio will not travel very far. Your cell phone won't work at all.
...tell someone where you are going, and when you expect to return.
Rather than parking on the freeway, hiking in on the new State Trail segment may be a better option, allowing also for a brief side trip to the Moffett Creek Bridge. Park at the John B. Yeon trailhead and take the last Gorge Trail #400 junction, just under the eastbound I-84 bridge over Moffett Creek, following the trail east to the footbridge.
One could also walk in on the State Trail westbound from Tanner Creek, however the parking at the Wahclella Falls trailhead is $5 while the Yeon trailhead parking is free.
There are ten more waterfalls along Moffett Creek above the first falls, but the approach to these falls, either up from the first falls or down the drainage from above is a serious canyoneering adventure requiring technical rock climbing skills.
The links at the bottom of the page contain some great pictures of these impressive waterfalls, especially this one: Kwanesum and the falls of Moffett Creek.
This 2008 exploration is well documented on the Portland Hikers Forum in the post Kwanesum and the falls of Moffett Creek. There are some amazing photos of the upper Moffett waterfalls posted here, as well.
Height: 42- 50 feet
The second to last waterfall along Moffett Creek has for the longest time been referred to as Wahe Falls, per the USGS Tanner Butte quadrangle. However, in digging through old journals of the Portland-based Mazamas, according to their December 1916 publication it turns out that the name Wahe was originally applied to the final waterfall along Moffett Creek and the USGS has had the incorrect waterfall marked with this name for decades (a precedent which isn't uncommon in this part of Oregon it seems). Data available from the Oregon State Water Resources Department seems to back this up, referring to the fish-blocking lowermost waterfall as Wahe Falls. Given this mixup, we've opted to refer to this waterfall as Upper Wahe Falls.
Kwanesum Falls is the largest waterfall along Moffett Creek, with a drop of about 145 feet in a narrow recessed amphitheater. There is no developed access to the falls, and the terrain around it is so rugged that the only possible access to the falls requires technical climbing skills.
The falls have no official name. The name Kwanesum has been proposed by two intrepid Portland area waterfall hunters who are thought to be the first to see the falls from the ground. Kwanesum is a Chinook word meaning "forever, eternity or always".
Height: 45 feet
Upper Moffett Falls is the Unofficial name of this waterfall.
http://www.waterfallsnorthwest.com/nws/falls.php?num=9506
http://www.geocaching.com/geocache/GCHPRA_ka-ho-nee-falls
http://www.oregonhikers.org/forum/viewtopic.php?t=6298
http://www.ellenvanderslice.com/adventures/wahe_falls/
http://columbiariverimages.com/Regions/Places/moffett_creek.html