Monitor Yosemite’s Snowpack & Water Resources

Predicting changes in Yosemite’s snowpack is vital to understanding water availability.

In Yosemite, 90 percent of water comes from snow, making it the life force of the park’s varied ecosystems. Snow below 8,500 feet (70 percent of the park) is decreasing, and park scientists need information relating snowmelt to water availability. This affects decisions regarding natural resources and sensitive species, such as giant sequoias, wet meadows, Yosemite toad, Pacific fisher and Sierra Nevada bighorn sheep.

This project will allow scientists to build a predictive snow model using state-of-the-art monitoring stations to measure changes in the snowpack and the amount of water available. It will also inform park managers of the potential vulnerability of park landscapes to changes in precipitation patterns.

With your help, Yosemite scientists will continue to lead the way in cutting-edge research to protect the park’s — and the earth’s — natural resources.

Partnering with UC Merced.

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Project Notes

This project will help build a foundation of data that will help us understand how snow dynamics affect water availability for Yosemite’s forests, including the iconic Mariposa Grove.

Jim Roche
Yosemite National Park