• Giant Sequoia Trees

    Sequoia & Kings Canyon

    National Parks California

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  • Sequoia and Kings Canyon National Parks Institute Stage 2 Fire Restrictions

    Effective July 28, 2014, the parks are in Stage 2 fire restrictions. See link below for more information. These restrictions will remain in place until further notice. More »

  • Road Construction Delays on Park Roads for 2014 Season

    Expect occasional 15-min. to 1-hour delays in Sequoia and Kings Canyon National Parks beginning Monday, June 2, weekdays only, between 5:30 a.m.-4:30 p.m., including delays to/from the General Sherman Tree, Crystal Cave, and Grant Grove. More »

  • Vehicle Length Limits in Sequoia National Park (if Entering/Exiting Hwy 198)

    Planning to see the "Big Trees" in Sequoia National Park? If you enter/exit via Hwy. 198, please pay close attention to vehicle length advisories for your safety and the safety of others. More »

  • You May Have Trouble Calling Us

    We are experiencing technical problems receiving incoming phone calls. We apologize for the inconvenience. Please send us an email to SEKI_Interpretation@nps.gov or check the "More" link for trip-planning information. More »

Environmental Factors: Air, Land, & Water

The parks are increasingly threatened by pollution from agriculture, industry, and transportation.

Among Sequoia and Kings Canyon National Parks’ rich diversity of plants and animals are other elements that are not as obvious but equally important. An air flow eddy circles around the neighboring San Joaquin Valley and carries air pollution from human activity and industry into the parks. This affects visibility, the health of people and natural resources in the parks. Air quality monitoring in the parks is making a difference by providing important data to notify the public of health hazards on “bad air” days and to help both state and federal agencies in their efforts to improve air quality.

In the past the landscapes of these parks were regularly shaped by fire. The positive results benefited both plants and animals, such as encouraging the regeneration of plants, which in turn can benefit wildlife. After decades of fire suppression the landscape has severely changed, but efforts have been made to once again allow fire to return to its place as part of the natural cycle in the Sierra Nevada.

As the population of the state continues to increase and urban areas grow, so does the use of outdoor lighting. This has an environmental impact on dark skies. Where once dark skies provided the perfect backdrop to distant stars and planets, they now glow more from the lights of urban areas. By recording these changes and providing education, park staff can increase appreciation of the night skies and suggest ways that we all can take a more active role returning a natural glow to our night skies.

Did You Know?

Col. Charles Young in uniform

In 1903, an African-American served as superintendent of Sequoia National Park, the first to do so in the National Park Service. Colonel Charles Young and his troops played a major part in completing the first wagon road to the Giant Forest, and the Moro Rock Road. A sequoia tree was named for him. More...