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Three Sisters

Deschutes National Forest · Oregon · 7,687 acres · RoadlessArea Rule (2001)

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Vegetation (14)

Composition from LANDFIRE 2024 EVT spatial analysis. Ecosystems classified per NatureServe Terrestrial Ecological Systems.

Pacific Northwest Mountain Hemlock Forest

Tree / Conifer · 1,010 ha

GNR32.5%

Pacific Northwest Mountain Shrubland

Shrub / Shrubland · 624 ha

GNR20.0%

Northern Rockies Ponderosa Pine Woodland

Tree / Conifer · 410 ha

GNR13.2%

Sierra Nevada Lodgepole Pine Forest

Tree / Conifer · 224 ha

GNR7.2%

Southern Rockies Mixed Conifer Forest

Tree / Conifer · 163 ha

GNR5.3%

Pacific Northwest Dry Silver Fir Forest

Tree / Conifer · 141 ha

GNR4.5%

Pacific Northwest Alpine Dry Grassland

Herb / Grassland · 136 ha

GNR4.4%

East Cascades Moist Mountain Conifer Forest

Tree / Conifer · 65 ha

GNR2.1%

Pacific Northwest Dry Silver Fir Forest

Tree / Conifer · 43 ha

GNR1.4%

Southern Vancouverian Lowland Ruderal Shrubland

Shrub / Exotic Tree-Shrub · 43 ha

1.4%

Pacific Northwest Mountain Cliff and Talus

Sparse / Sparsely Vegetated · 30 ha

GNR1.0%

Pacific Northwest Mountain Streamside Forest

Tree / Riparian · 30 ha

GNR1.0%

California Subalpine Woodland

Tree / Conifer · 30 ha

GNR1.0%

Pacific Northwest Alpine Shrubland and Meadow

Shrub / Shrubland · 30 ha

GNR1.0%

Three Sisters

Three Sisters

Three Sisters Roadless Area