Mapping the Expedition

Data Sources

GIS allows many different types of data to be fused together into a common geographic framework from which to analyze the Lewis and Clark expedition. Data such as elevation, watersheds, ecoregions, soils, wildlife, precipitation, and other spatial characteristics add new dimensions to their journey and the changes that have occurred during the past 200 years.

Below are selected links to sites that offer GIS data sets you can download to create your own maps.

• David Rumsey Map Collection—Lewis and Clark Expedition GIS
• ArcLessons Social Studies Lessons With GIS
  See especially
  
  • Canals, Roads, Trails: Which Way Did They Go?
  • Lewis & Clark 2003: GIS Data/Project Package
  • Mapping the Lewis and Clark Expedition, 1803–1806
  • Oregon Trail
  • New Look at Lewis & Clark with Online GIS
  • The Pull of Polaris: GIS and the Underground Railroad