Tuolumne River Sticker

The Tuolumne River runs through the middle of the meadows, for three miles, and is supplied by snowmelt and hill-slope aquifers. In spring as soon as the snow melts, it is not uncommon to see large areas of the meadows flooded and practically transformed into a lake.

What is the source of Tuolumne Meadows groundwater and where does it go? Water sources include two forks deep in Yosemite's wilderness—the Dana and the Lyell—and include three creeks—Budd, Delaney and Unicorn.