• Giant Sequoia Trees

    Sequoia & Kings Canyon

    National Parks California

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  • The Generals Highway "Road Between the Parks" is OPEN

    The section of road between Lodgepole (Sequoia) and Grant Grove (Kings Canyon) is open. Call 559-565-3341 (press 1, 1) for 24-hour road updates.

  • Be Prepared! Tire Chains or Cables May Be Required in the Parks at Any Time

    All vehicles must carry chains or cables when entering a chain-restricted area. It's the law (CA Vehicle Code, Section 605, Sections 27450-27503). Road conditions may change often. For road conditions, call 559-565-3341 (press 1, 1). 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 »

  • 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 »

Impact of Development

Cabin next to giant sequoia tree

In many parts of the Giant Forest, human presence overshadowed even the mighty sequoias. Above is the former Giant Forest Lodge area.

NPS photo


Impacts from nearly 100 years of development supporting overnight accommodations in Giant Forest threatened the giant sequoia ecosystem that the National Park Service was charged to protect for future generations. To construct roads and parking lots, sequoia roots had been pruned, small portions of wetland and riparian areas had been filled over, and drainage patterns had been changed. Outdated utility systems leaked effluent into meadows and streams. Trampling and automobile use had compacted, eroded, and degraded soils, and pavement remained in abandoned campgrounds - all preventing germination and establishment of grasses, wildflowers, shrubs, and tree seedlings.

Fire, a critical factor for establishing the next generation of sequoias, was eliminated from the developed zone. Traffic congestion and limited opportunities for people with disabilities impaired visitor enjoyment. Aging, dilapidated structures were costly to maintain and service.

To keep Giant Forest Village in operation into the 21st century, a great amount of additional disturbance would have been necessary, including:

  • Replacement of the leaking underground water system
  • Replacement of the leaking underground sewer system
  • Replacement of many old, rundown buildings
  • Long-term trimming and removal of trees that threatened buildings and visitor safety
  • Long-term cutting of roots to clear underground pipes
  • Continued soil erosion, soil compaction, and topsoil degradation
  • Continued fire suppression in and near development
Continued development in Giant Forest would have greatly increased the overall negative effect on the health of the grove. Replacing underground water and sewer systems would have required cutting mature sequoia roots, which has been shown to decrease the growth rate of mature giant sequoias. Young giant sequoias, as well as many other trees, shrubs, and wildflowers, would fail to regenerate because of impacts to the soil and the absence of fire. Removal of hazardous trees would continue to alter forest structure. Future generations would see an unnatural forest radically different from what we see today.

Did You Know?

Sequoia bark.

Of the 75 or so sequoia groves in the world, Sequoia and Kings Canyon National Parks protect 29 of them. More...