Illinois Level 4 Ecoregions Map

er40a - Loess Flats and Till Plains
er47f - Rolling Loess Prairies
er52a - Savanna Section
er52b - Paleozoic Plateau/Coulee Section
er53a - Rock River Drift Plain
er53b - Kettle Moraines
er54a - Illinois/Indiana Prairies
er54b - Chicago Lake Plain
er54c - Kankakee Marsh
er54d - Sand Area
er54e - Chiwaukee Prairie Region
er54f - Valparaiso-Wheaton Morainal Complex
er54g - Rock River Hills
er71a - Crawford-Mammoth Cave Uplands
er71m - Northern Shawnee Hills
er71n - Southern Shawnee Hills
er72a - Wabash-Ohio Bottomlands
er72b - Glaciated Wabash Lowlands
er72d - Upper Mississippi Alluvial Plain
er72e - Middle Mississippi Alluvial Plain er72e - River Hills
er72g - Southern Ozarkian River Bluffs er72g - Western Dissected Illinoian Till Plain
er72j - Southern Illinoian Till Plain er72j - Cretaceous Hills
er72l - Karstic Northern Ozarkian River Bluffs er72l - Wabash River Bluffs and Low Hills
er73a - Northern Holocene Meander Belts er73a - St. Francis Lowlands

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 Illinois gardenders.

Ecoregion Maps for Neighboring States

  • Indiana Interactive Level 4 Ecoregions Map
  • Iowa Interactive Level 4 Ecoregions Map
  • Kentucky Interactive Level 4 Ecoregions Map
  • Missouri Interactive Level 4 Ecoregions Map
  • Wisconsin Interactive Level 4 Ecoregions Map

Related Illinois Maps:

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