How to use OGC Web Map Services (WMS) in ArcGIS Desktop

Copy the base WMS URL (up to and including ) from the mrdata.usgs.gov website:
Click this screen-shot to view it full size in a new window
Web page on MRData.usgs.gov showing geologic map of Delaware, with the URL of the WMS circled Open ArcCatalog and:
  1. Double-click "Add WMS Server".
  2. Paste in the base WMS URL.
  3. Click "Get Layers". You will see a list of all the available layers:
    Click this screen-shot to view it full size in a new window
    Screenshot of ArcCatalog showing what you need to click, in sequence
  4. Click OK.
You can now drill down to view the layers or add them to an ArcMap session.