Landforms were grouped into the following classes for map display:
• Hill or mountain: Includes undifferentiated hills and mountains of all slopes and sizes. Includes moraines and kames.
• Talus slope: Accumulation of mass-wasted boulders forming an apron below bedrock exposures.
• Bluff or cliff: Very steep slopes usually associated with bedrock areas or eroded lake and river margins.
• Flat: Undifferentiated flat areas.
• Basin: Refers primarily to colluvial basins between hills usually filled with wetlands and broad watertracks.
• Drained or filled lakes: Includes drained glacial kettle lakes in outwash deposits, drained glacial moraine-damned lakes such as the ancient Lake Galbraith, and filled lakes and pond margins.
• Floodplain or floodplain terrace: Includes active and nonactive floodplains and glaciofluvial outwash, ancient floodplains, also wide drainages filled with watertracks, abandoned sloughs, point bars, oxbows, etc.
• Debris flow: Includes areas of melting ground ice with debris flows.
• Alluvial fan: Includes nearly flat alluvial fans associated with existing and ancient lakes and steep alluvial fans at the base of steep valleys that are products of debris flows.
• Lake or pond.
• Disturbed area: Includes gravel mines and gravel construction pads.
Walker, D. A. and H. A. Maier. 2008. Vegetation in the vicinity of the Toolik Field Station, Alaska. Institute of Arctic Biology, University of Alaska Fairbanks, Biological Papers of the University of Alaska, No. 28. ISSN: 0568-8604. ISBN: 978-0-9767525-2-3