The Leaf Pack Network is an initiative of Stroud™ Water Research Center. The Stroud Center seeks to advance knowledge and stewardship of freshwater systems through global research, education, and watershed restoration.

Determining Latitude and Longitude

While at Your Site

If you have adequate reception at your experiment site, you can use your phone to determine your latitude and longitude.


Use your iPhone’s built-in GPS device


  • Open Google Maps; it will zoom to your approximate location. Press and hold on the screen to drop a pin marker. Latitude and longitude will be displayed in the search bar.
  • If you don’t have Google Maps, you can install a free GPS app before heading to your site.

Back at Home or School

If you don’t have adequate reception at your experiment site, once you get back to a computer you can use Google Maps to determine your site’s latitude and longitude. Go to and follow the instructions in the video.