Skip to Main Content
It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.

PHSC 402: Emergency Preparedness and Public Health: ArcGIS Online & Story Maps

Evaluating Data Sources

When choosing data to use for your mapping projects, it is important to keep the following criteria in mind:

  • Does it have metadata, such as information about how, when and by whom the data was collected?
  • Are the projections/coordinate systems compatible?
  • Does it have a location aspect (latitude and longitude; state names; country names), so that I can use it in my GIS?
  • Is it current, or from the right time frame?
  • Is the data from an authoritative source?