Oregon Level 4 Ecoregions Map

er10c - Umatilla Plateau
er10e - Pleistocene Lake Basins
er10g - Yakima Folds
er10i - Deep Loess Foothills
er10k - Deschutes/John Day Canyons
er10n - Umatilla Dissected Uplands
er11a - John Day/Clarno Uplands
er11b - John Day/ Clarno Highlands
er11c - Maritime-Influenced Zone
er11d - Melange
er11e - Wallowas/Seven Devils Mountains
er11f - Canyons and Dissected Highlands
er11g - Canyons and Dissected Uplands
er11h - Continental Zone Highlands
er11i - Continental Zone Foothills
er11k - Blue Mountain Basins
er11l - Mesic Forest Zone
er11m - Subalpine-Alpine Zone
er11n - Deschutes River Valley
er11o - Cold Basins er11o - Treasure Valley
er12j - Unwooded Alkaline Foothills er12j - Coastal Lowlands
er1b - Coastal Uplands er1b - Volcanics
er1f - Willapa Hills er1f - Mid-Coastal Sedimentary
er1h - Southern Oregon Coastal Mountains er1h - Redwood Zone
er2h - Cowlitz/Chehalis Foothills er2h - Portland/Vancouver Basin
er3b - Willamette River and Tributaries Gallery Forest er3b - Prairie Terraces
er3d - Valley Foothills er3d - Western Cascades Lowlands and Valleys
er4b - Western Cascades Montane Highlands er4b - Cascade Crest Montane Forest
er4d - Cascade Subalpine/Alpine er4d - High Southern Cascades Montane Forest
er4f - Southern Cascades er4f - Rogue/Illinois Valleys
er78b - Oak Savanna Foothills er78b - Umpqua Interior Foothills
er78d - Serpentine Siskiyous er78d - Inland Siskiyous
er78f - Coastal Siskiyous er78f - Klamath River Ridges
er78h - Border High-Siskiyous er78h - Dissected High Lava Plateau
er80d - Pluvial Lake Basins er80d - High Desert Wetlands
er80f - Owyhee Uplands and Canyons er80f - High Lava Plains
er80j - Semiarid Uplands er80j - Partly Forested Mountains
er80l - Salt Shrub Valleys er80l - Barren Playas
er9b - Grand Fir Mixed Forest er9b - Oak/Conifer Foothills
er9d - Ponderosa Pine/Bitterbrush Woodland er9d - Pumice Plateau
er9f - Pumice Plateau Basins er9f - Klamath/Goose Lake Basins
er9h - Fremont Pine/Fir Forest er9h - Southern Cascade Slope
er9j - Klamath Juniper Woodland er9j - Warner Mountains
er9t - Old Cascades

Based on Ecoregions developed by the EPA this map describe areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources, as well as similarity of climate that can assist Oregon gardenders.

Ecoregion Maps for Neighboring States

  • California Interactive Level 4 Ecoregions Map
  • Idaho Interactive Level 4 Ecoregions Map
  • Nevada Interactive Level 4 Ecoregions Map
  • Washington Interactive Level 4 Ecoregions Map

Related Oregon Maps:

  • Oregon Last Frost Date Map
  • Oregon 1990 USDA Hardiness Zone Map
  • Oregon 2012 USDA Hardiness Zone Map
  • Oregon First Frost Date Map
  • Oregon Last Frost Date Map
  • Map of Oregon Record High/Low Temperatures
  • Oregon Interactive Drought Monitor Map
  • Oregon Drought Index Map
  • Oregon Heat Zones Map
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