What are the negatives of Yosemite National Park?

Invasive species have a negative impact on natural resources nationwide, including in Yosemite National Park. Non-native animal species, like the New Zealand mud snail, concern park scientists because this species can completely cover a river streambed, thereby altering the ecosystem.



People Also Ask

Each year, Yosemite National Park welcomes over four million visitors. If you're visiting Yosemite—particularly Yosemite Valley—during spring or fall, expect extremely high visitor concentrations, resulting in extended traffic delays, extremely limited parking, busy trails, and no lodging or campground availability.

MORE DETAILS

Yosemite National Park offers a range of swimming opportunities—from rivers and lakes to our family-friendly pools, which are the only swimming places in Yosemite with lifeguards. River and lake swimming is at-your-own-risk. Life jackets are strongly recommended—especially for children.

MORE DETAILS

Natural lightscapes, including dark night skies, are a scenic resource integral to many people's Yosemite experience.

MORE DETAILS

Hikers in Yosemite's lower and middle elevations should be aware of the presence of poison oak, a native shrub that can cause contact dermatitis.

MORE DETAILS

The deer mouse (Peromyscus maniculatus) is the primary reservoir for Sin Nombre Virus, the strain of hantavirus responsible for the human cases in Yosemite National Park, and most human cases in the United States.

MORE DETAILS