About Rainbow Falls
It was a 101ft year-round waterfall on the San Joaquin River in the Devil’s Postpile National Monument.
A distinguishing feature of this waterfall was its classic rectangular shape with the presence of basalt columns beneath the waterfall’s vertical drop.
And if we time our visit correctly for the middle to late afternoon, we also got to see the namesake rainbows in its mist.
Rainbow Falls was one of those waterfalls where there was a little of everything for everyone.
Photographers would appreciate the pair of overlooks providing a nice contextual view as well as the possibility of seeing a rainbow.
People looking to cool off would appreciate the ability to go all the way down to the San Joaquin River right in front of the waterfall where the river would be calm enough for a soak or swim.
Over the years, Rainbow Falls has been such a consistent performer that we placed it in our Top 10 Best California Waterfalls List.
Rainbow Falls in Yosemite National Park?
It’s hard to believe that Rainbow Falls was once a part of the incomparable Yosemite National Park.
However, mining interests successfully removed the falls and the neighboring Devils Postpile formation from protection.
Then in 1910, Walter L. Huber (an engineer with the US Forest Service in San Fransisco) received an application to blast the postpile formation and dam the San Joaquin River with the debris.
That started to get create some serious attention and interest in Rainbow Falls from outside the mining circles.
Disturbed by this finding, Huber got the Sierra Club involved and thus set forth the chain of events that would eventually make the area a national monument in 1911.
Photographing Rainbow Falls
We were certainly glad for the preservation of this waterfall and its neighboring attractions, because it was a beauty.
From the multiple visits that Julie and I have made here (from as early as July 4th weekend to as late as Labor Day weekend), we can definitely say that the best time of day to photograph the falls would be in the mid- to late afternoon.
That was when Rainbow Falls receives the benefit of sun’s soft light.
If it’s long exposure photographs you’re after, you’d have to come either very early in the morning or very late in the afternoon when all of the falls and the surrounding area would be in shadow.
In the mid- to late morning, the falls would be mostly in its own shadow though it would be a pretty quiet time of the day to visit.
The Rainbow Falls Hike
The trail to Rainbow Falls from either of its nearest trailheads by Red’s Meadow Pack Station (see directions below) was about 1.3 miles each way (or 2.6 miles round trip).
While the modest distance may not seem like much, there were a myriad of factors that conspired to make this hike deceptively more strenuous than anticipated.
Indeed, the trail was a relatively high altitude of around 7,000ft or so (meaning the air was thinner).
The trail was also very dusty due to the pounding from pack mules and lots of foot traffic making the fine particles of the dirt easily breathed into the lungs.
On top of that, the trail to Rainbow Falls was upside-down, meaning you have to gain back all that elevation loss when regaining the trailhead.
Moreover, the trail was very exposed to the sun thanks to damage from a pretty extensive fire in 1992 that denuded an extensive area from tree cover.
The best advice we can give regarding this hike would be to take your time, take frequent rest breaks, and drink lots of water.
If you can help it, try to get acclimated to the altitude by overnighting in Mammoth or exposing yourself to high altitudes immediately prior to doing this hike.
Regarding the dust, there’s not a whole lot you can do about that.
By the end of the excursion, our clothes and especially our hiking boots were caked in a pretty thick layer of dust.
I can practically guarantee that just about everyone who does this hike will come back dirty.
Rainbow Falls Trail Description
From the main Rainbow Falls trailhead (where we’d park the car if we came early enough to drive in), we followed the dusty and sandy trail downhill as it was joined by the other Red’s Meadow Trail from the left.
In addition to many hikers on the trail, pack mules also frequently use this trail so we had to stop often to let them pass (and kick up fine trail dust).
About half-way down the trail, the Rainbow Falls Trail meandered into a ghostly burn area from a forest fire may have been exacerbated by decades of fire suppression.
Near the start of this section was a connecting trail following the San Joaquin River to the Devil’s Postpile Formation, which we didn’t take.
The area was still recovering as of 2010 and 2015, which gives you an idea of how long it takes for a pine forest to recover from a wildfire.
The end result was that the trail was open to exposure from the sun and caused it to be a surprisingly hot hike.
At least the flip side was that it seemed like wildlife (such as deer) was easier to spot without the camouflage of dense foliage.
Eventually after about 1.25 miles from the trailhead, we started to hike past the brink of Rainbow Falls towards a couple of overlooks.
The first overlook provided a more angled look down at the falls.
In my experience, it was easier to see rainbows (albeit faint) from here.
The second overlook was more direct and maybe more photogenic (it yielded the photo you see at the top of this page).
In all the times that I’ve been here, I never recalled seeing a rainbow of any appreciable boldness or size, however.
Maybe we just weren’t in the right place at the right time.
Anyways, nearby that second overlook, there was a branching trail leading right to a series of steep steps.
These steps descended right to the banks of the San Joaquin River where we were able to get direct views of the falls while feeling its mist.
In low flow (like on our first visit here in September 2001), Julie and I were able to practically stand almost directly in front Rainbow Falls’ wall of water.
However, in high flow (like on our second visit in early July 2002), it was difficult to get that direct look since the river was running significantly higher.
Thus, entering the water was not a viable option under such conditions.
Back at the top of the steps on the main trail, the trail continued going downhill past a little corral area (where they park the horses and pack mules).
That trail went for another half-mile to the Lower Falls.
Since the vast majority of visitors turn back at Rainbow Falls, we decided to describe the Lower Falls in a separate writeup.
Rainbow Falls resides in the Devils Postpile National Monument near Mammoth Lakes in Fresno County and Mono County, California. It is administered by the National Park Service. For information or inquiries about the reserve as well as current conditions, visit the website or Facebook page.
It’s roughly a 15- to 20-minute drive from Mammoth Village to the ski resort on Mammoth Mountain.
The shuttle seems to take about 45 minutes to go from the ski resort area to the trailhead for Rainbow Falls.
We then continue north on Hwy 395 to the State Hwy 203 turnoff.
State Hwy 203 leads into Mammoth Lakes, but continues onwards at Minaret Rd (there’s a traffic light), which you take to the Mammoth Mountain Ski Resort area.
The mandatory shuttle is based here ($7 per adult, $4 per child as of 2015; National Parks Pass not accepted even though it’s in a National Monument) so here’s where you’d park the car.
Continuing on typically requires a shuttle, and it continues on Minaret Rd taking you into the Devil’s Postpile National Monument.
You can get off at any number of stops, each with varying lengths of hiking to the waterfall or other attractions or logistical bases like the Red’s Meadow Pack Station.
In my experience, if you show up before 7am or after 7:30pm, you can self-drive this section (though you still have to pay the fee at any time you cross the entrance/exit booth during operating hours).
In order to drive into the reserve in more reasonable hours, you have to book an excursion with the Red’s Meadow Pack Station or overnight at the Red’s Meadow Lodge.
One thing we found when taking the shuttle (at least in our 2015 experience) was that their arrival times tend to be pretty infrequent.
The brochure says they show up no more than every 20 minutes between 10am and 4pm.
Outside those times, they can show up every 45 minutes!
Needless to say, we weren’t able to shuttle hop to visit places like Devil’s Postpile or Sotcher Lake on the same day without getting an early start or making a really long day hike out of it.
However, if we were able to drive into the reserve, then that flexibility will make such trailhead switches possible without the delays of waiting for the shuttle (which can also get really crowded).
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