STREAM Girls is Trout Unlimited’s outdoor STEM program for girls. This watershed experience employs STEM-education (science, technology, engineering, math) plus recreation and arts to explore a local stream.

Every person is a citizen of her watershed, and Trout Unlimited has partnered with Girl Scouts USA to show what that means to us. By visiting a local stream and having the opportunity to observe it as scientists, anglers, and artists, girls will get the complete picture of what their stream could mean to them.

Over the course of multiple sessions, Trout Unlimited volunteers lead the Girl Scouts in observing a stream, collecting flow data, sampling macroinvertebrates (aka aquatic bugs), fly tying, and fly casting. Each day also gives the girls time to explore the natural area and record their thoughts and observations in their handbooks.


Eight core activities make a STREAM Girls program. You may choose activities that fit the interest and timeframe for your event; however, doing all eight core activities is required for your program to be considered a STREAM Girls “patch” program. That is, in order for the scouts to receive the patch, they must complete all of the following eight activities:

1.    STREAM Walk
2.    Fly casting
3.    Go with the Flow!
4.    Macroinvertebrate survey
5.    Fly tying
6.    STREAM stations and bracelets
7.    Some amount of reflection throughout
8.    Some amount of discussion throughout


  • STREAM Girls TU Volunteer Guide: Your one-stop doc for planning and executing a flexible and fun curriculum.
  • STREAM Girls Field Notebook: Used by the scouts as they move through the program to record their observations, studies, and reflections.
  • Equipment: Outlined before each activity in the Volunteer Guide.
  • Volunteers: You will need volunteers to fill varying roles from logistical planning to leading the girls in activities.
  • Scouts: Contact your local Girl Scouts Council to begin developing this worthwhile partnership! Click here to find a council near you.
  • TU Staff: Not finding what you need or have questions? Get assistance from TU Headwaters staff as you begin your program. They are always available for teleconferences or to point you in the right direction for resources.