Yellowstone National Park GIS Data
http://www.nps.gov/gis/park_gisdata/wyoming/yell.htm

National Park Service


This website provides links to GIS vector data and metadata for the geology, geography, biology, climate, infrastructure, and management of Yellowstone National Park. Note that these datasets must be viewed with ArcView. Additionally, it provides links to GIS raster metadata and an order form for a CD containing raster data.

This resource is referenced here:
Subject: Biology, Geoscience:Geology, Atmospheric Science:Climatology
Resource Type: Datasets and Tools:Datasets
Topics: Earth surface, Climate, Human Dimensions/Resources, Biosphere