The Vegetation Map for Northern, Western, and Interior Alaska mosaicks the best-available data derived from 18 regional landcover maps that have been developed within the last 31 years. The map is attributed with a uniform, two-tiered legend so that landcover classes that are similar in concept, yet different in nomenclature may be reconciled. These hierarchical levels of landcover classes are represented by a coarse-scale class, which is analogous to level III of the Alaska Vegetation Classification and fine-scale classes, which nest within the coarse-scale classes and are analogous to level IV of the Alaska Vegetation Classification. The accompanying users guide describes, maps, and classifies the component landcover classes. As ecologists continue to produce new regional landcover maps, ACCS will update both the vegetation maps for Northern, Western, and Interior Alaska as well as the complementary map for Southern Alaska and the Aleutian Islands.