For observations entered through iNaturalist, you can follow the method outlined in the article: How do I edit/delete my records.

This is how you can change or fine tune the location (latitude and longitude) of a sighting you entered directly into the ALA:

  1. Log in to the ALA and navigate to the My Sightings page
  2. Select the sighting you want to change, then display it on a map.
  3. Select and drag the orange dot on the map that represents your sighting and move it to where you want it to be. Then press Save or Save Changes, OR
  4. Enter the required latitude/longitude in the location box; the map will move to the new location. 
  5. Click Save Changes.