Adventures of a swimming hole aficionado

For the third day of our trip, Cade and I went to the Tenaya Creek Slide in Yosemite, which is a massive natural waterslide where Tenaya Creek flows over a vast expanse of solid granite downstream of Tenaya Lake on its way to Yosemite Valley. The creek is very seasonal and normally dries up by the end of July. However, the record snowpack made it difficult to predict when the seasonal creeks would dry up this year, so I was hoping it would still be running in late August. I could see from Glacier Point on Monday that Tenaya Creek was definitely flowing, so I knew we were good to check it out today.

Before we went to the slide, I wanted to do some recon on the upper Tuolumne River for possible future excursions. I had originally thought about hiking to Glen Aulin on this trip, which is on the Tuolumne River a few miles downstream of Tuolumne Meadows. However, this section of the river actually has a temperature gauge, and it indicated the water temperature was currently in the 50s (as opposed to upper 60s or even low 70s in low/normal snowfall years). It had been about 60 °F before the storms came through on Sunday and Monday, but I’m guessing the rain must have washed some of the snowmelt into the river and made it colder. Still, I wanted to get a look at some of the closest swimming holes to the road just to get an idea of what the geology and water clarity looked like in person. It looked like we could get a sneak peek by hiking about a mile on the Pothole Dome Trail to where the river flowed over some exposed bedrock on the downstream end of Tuolumne Meadows. I was also interested in seeing a little bit of the Lyell Fork Tuolumne River, as it looked to have clear, blue water, and I had marked one point of interest on Google Earth near a footbridge about a mile upstream of the road at the Tuolumne Lodge.

( Click here for the full trip report with pictures and videos )

In summary, the Tenaya Creek slide was an okay natural waterslide, but it wasn’t great for butt-sliding at today’s flow due to the difficulty of getting an obstacle-free route to the bottom. It would probably be best enjoyed on an innertube or some kind of inflatable device that can pad the bumps and open up more paths to the bottom. I had thought this was just going to be a slide, as the pool at the bottom was only about three feet deep, but the rock pool at the base of the upper waterfall was a legit swimming hole. Before coming here, I was wondering how one might use Yosemite Falls as an indicator of whether Tenaya Creek is still flowing (since Yosemite Falls has a live webcam that streams 24/7). Yosemite Falls was still flowing strongly two days ago, as was Chilnualna Creek yesterday, while Tenaya Creek was flowing more gently today. Therefore, I would guess that Tenaya probably dries up before Yosemite and Chilnualna Creeks do, meaning that most ephemeral streams in the park would probably be too high and cold for swimming when Tenaya is at optimal flow.

As for the Tuolumne River, I would be interested to explore more of it and hike to Glen Aulin in a drier year when the water is lower and warmer (it apparently gets up to 70 °F some years, according to its temperature gauge), but there was no way it was going to be pleasant under today’s conditions.