Hello Kaitlyn,
The trick is to find a “geojson” file with the watershed “boundary” information in it. Once you have such a file on your desktop, drag it into a CODAP document. It should open a case table and a map displaying the boundary information.
I did a quick search and, like you, didn’t immediately stumble on anything. Sigh.
Sometimes I’ve only been able to find a file in a different format from geojson such as KML or a Shapefile. There are online converters that convert from a given format to geojson and these have worked for me in the past.
CODAP doesn’t have any builtin tools for helping you create boundary information. But one colleague was successful in creating his own boundaries for, if I remember correctly, bike lanes in NYC. So that would be an outside possibility.
Don’t hesitate to post here again if you get stuck. Anyone else have any experience with watershed boundary geojson files?
Bill