Oklahoma Level 4 Ecoregions Map

er25b - Rolling Sand Plains
er25c - Moderate Relief Plains
er25e - Rolling Cropland and Range
er26a - Cimarron Breaks
er26b - Flat Tablelands and Valleys
er26c - Caprock Canyons, Badlands, and Breaks
er26f - Mesa de Maya/Black Mesa
er27d - Wellington-McPherson Lowland
er27h - Red Prairie
er27i - Broken Red Plains
er27k - Wichita Mountains
er27l - Pleistocene Sand Dunes and Sandsage Grassland
er27m - Red River Tablelands
er27n - Gypsum Hills
er27o - Cross Timbers Transition
er27p - Salt Plains
er27q - Rolling Red Hills
er27r - Limestone Hills
er28a - Flint Hills
er29a - Cross Timbers er29a - Eastern Cross Timbers
er29c - Western Cross Timbers er29c - Grand Prairie
er29g - Arbuckle Uplift er29g - Northwestern Cross Timbers
er29i - Arbuckle Mountains er29i - Northern Post Oak Savanna
er35b - Floodplains and Low Terraces er35b - Pleistocene Fluvial Terraces
er35d - Cretaceous Dissected Uplands er35d - Red River Bottomlands
er35h - Blackland Prairie er35h - Athens Plateau
er36b - Central Mountain Ranges er36b - Fourche Mountains
er36e - Western Ouachitas er36e - Western Ouachita Valleys
er37a - Scattered High Ridges and Mountains er37a - Arkansas River Floodplain
er37d - Arkansas Valley Plains er37d - Lower Canadian Hills
er38b - Lower Boston Mountains er38b - Springfield Plateau
er39b - Dissected Springfield Plateau-Elk River Hills er39b - Osage Cuestas
er40d - Cherokee Plains

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 Oklahoma gardenders.

Ecoregion Maps for Neighboring States

  • Arkansas Interactive Level 4 Ecoregions Map
  • Colorado Interactive Level 4 Ecoregions Map
  • Kansas Interactive Level 4 Ecoregions Map
  • Missouri Interactive Level 4 Ecoregions Map
  • New Mexico Interactive Level 4 Ecoregions Map
  • Texas Interactive Level 4 Ecoregions Map

Related Oklahoma Maps:

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