Cascades Mountain Forests & Valleys bioregion

The bioregion’s land area is provided in units of 1,000 hectares. The protection goal is the combined Global Safety Net (GSN1) areas for the component ecoregions. The protection level indicates the percentage of the GSN goal that is currently protected on a scale of 0-10. N/A means data is not available at this time.

  • 16,228
    Total Land Area (1000 ha)
  • 4
    Number of Ecoregions
  • 47%
    Protection Target
  • 4
    Protection Level

The Cascades bioregion, located in the Pacific Coast subrealm of Northern America, is defined by the dense forests of the Cascades Range, stretching from northern California to the Canadian border. This bioregion also incorporates the grasslands at the foot of the Cascades Range in western Oregon. It contains four distinct ecoregions – North Cascades Conifer Forests (358), Central-Southern Cascades Forests (352), Eastern Cascades Forests (354), Willamette Valley Oak Savanna (403) – and includes the Columbia Gorge and many lakes dotted throughout the region. The land area of this bioregion is approximately 16 million hectares.

The Cascades Mountain Forests & Valleys bioregion is part of the North Pacific Coast subrealm and is made up of four ecoregions: (1) Willamette Valley Oak Savanna (2) Central-Southern Cascades Forests (3) Eastern Cascades Forests (4) North Cascades Conifer Forests. 

One Earth is dedicated to mobilizing philanthropic capital to protect the ecosystems and peoples of Northern America. Visit the Project Marketplace to explore projects in this realm that need your support. Learn more about each of the Cascades Mountain Forests & Valleys ecoregions below.

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The Global Safety Net (GSN) is the first global-scale analysis of land areas requiring protection to solve the twin crises of biodiversity loss and climate change, upholding and strengthening Indigenous land rights.

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