|er59c - Southern New England Coastal Plains and Hills|
|er59e - Narragansett/Bristol Lowland|
|er59g - Long Island Sound Coastal Lowland|
|er84a - Cape Cod and Islands|
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 Rhode Island gardenders.