Environmental Factors

Crags Lake
High elevation lakes, including Crags Lake, at Lassen Volcanic NP in California are particularly sensitive to nitrogen and sulfur deposition.

NPS Photo

Air Quality

Clean air helps people breathe easy and see far. It keeps our parks and planet healthy too! Clean, clear air can help you breath easy, see far, and enjoy nature. Lassen Volcanic has monitored air quality values such as pollution and visibility since the 1980s and works together with air regulatory agencies and partners to improve visibility.

Climate Change

Lassen provides water for five California watersheds and habitat for hundreds of wildlife species. These resources are faced with changes influenced by climate change. Lassen and the National Park Service are taking action to both measure and mitigate climate change affects.


Phenology is the study of the timing of life cycle events in organisms. Lassen Volcanic is one of seven pilot parks in California helping to establish park phenological monitoring projects. Lassen's phenology program relies heavily on scientific observations provided by citizen scientists like you.

Last updated: August 31, 2018

Contact the Park

Mailing Address:

PO Box 100
Mineral, CA 96063


(530) 595-4480

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