Arizona Level 4 Ecoregions Map
| er14a - Creosote Bush-Dominated Basins |
| er14b - Arid Footslopes |
| er14c - Eastern Mojave Mountain Woodland and Shrubland |
| er14e - Arid Valleys and Canyonlands |
| er14f - Mojave Playas |
| er14p - Lower Grand Canyon |
| er20c - Semiarid Benchlands and Canyonlands |
| er20d - Arid Canyonlands |
| er20e - Escarpments |
| er20h - Sand Deserts |
| er20i - Cold Desert Sagebrush-Grasslands |
| er22aa - Hualapai/Coconino Woodlands |
| er22d - Middle Elevation Mountains |
| er22i - San Juan/Chaco Tablelands and Mesas |
| er22j - Semiarid Tablelands |
| er22o - Northeast Arizona Shrub-Grasslands |
| er22p - Little Colorado Valley/Painted Desert |
| er22q - Dinetah Tablelands |
| er22r - Mesa Highlands |
| er22s - Hopi Buttes | er22s - Chinle Valley and Mesas |
| er22u - Kaibito/Moenkopi Sandy Plateaus | er22u - Marble Platform |
| er22w - Grand Canyon | er22w - Arizona Strip Plateaus |
| er22y - Uinkaret/Aubrey Montane Conifer Forest | er22y - Chino/Coconino Grasslands and Shrubsteppe |
| er23b - Madrean Lower Montane Woodlands | er23b - Montane Conifer Forests |
| er23d - Arizona/New Mexico Subalpine Forests | er23d - Conifer Woodlands and Savannas |
| er23h - Lower Mogollon Transition | er23h - Montane and Subalpine Grasslands |
| er23j - Northern Woodlands and Sagebrush | er23j - Sunset Crater Volcanics |
| er23l - Mogollon Transition Conifer Forests | er23l - Chihuahuan Basins and Playas |
| er24c - Low Mountains and Bajadas | er24c - Apachian Valleys and Low Hills |
| er79b - Lower Madrean Woodlands | er79b - Madrean Pine-Oak and Mixed Conifer Forests |
| er79d - Willcox Playa | er79d - Madrean Basin Grasslands |
| er81d - Sand Hills/Sand Dunes | er81d - Lower Colorado/Lower Gila River Valleys |
| er81i - Central Sonoran/Colorado Desert Mountains | er81i - Central Sonoran/Colorado Desert Basins |
| er81k - Arizona Upland/Eastern Sonoran Mountains | er81k - Arizona Upland/Eastern Sonoran Basins |
| er81m - Sonoran Lava Fields | er81m - Gila/Salt Intermediate Basins |
| er81o - Middle Gila/Salt River Floodplains |
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 Arizona gardenders.
