Leaves that fall into streams form natural leaf packs that provide food for aquatic organisms. Participants create artificial leaf packs and place them in a stream for three to four weeks. The leaf packs are retrieved from the stream and examined in the classroom... ...leading to the discovery of aquatic macroinvertebrates that indicate stream health. Schools enter their data into the online Leaf Pack database to share with the public. LPN experiments teach the importance of streamside forests and promote their stewardship.
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The Leaf Pack Network® (LPN) is a network of citizens, teachers, and students investigating their local stream ecosystems. Using the Leaf Pack Experiment Kit, participants:

Interested in connecting your classroom to the outdoors? Here’s how to get started!

Attention Leaf Pack Network® Participants

We are updating our method of communicating with the Leaf Pack Network®.

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Jump Into These Links!

Anyone interested in learning about riparian communities can use the resources available on the Leaf Pack Network®. Navigate the LPN website using the menu on the left, or start with these pages:

View data from a particular stream. Search by major watershed or school.

Visit our learning center to learn about watersheds, the link between trees and streams, macroinvertebrates, or data analysis.

Explore interesting resources from Stroud Water Research Center and other organizations that provide information about rivers and streams.

For a detailed look at the Leaf Pack Network, view our eight minute video.

FREE Workshop

Slimy Leaves for Healthy Streams: A Training in the Leaf Pack Network

Saturday, November 8, 9:30 a.m.-4:30 p.m.
Stroud Water Research Center

How can clumps of slimy leaves in a stream spark stream exploration? The Leaf Pack Experiment is a fun, hands-on research and outreach tool for non-scientists which demonstrates how our actions on land impact life in streams and water quality. Leaf Pack promotes inquiry-based interdisciplinary watershed education and engages diverse audiences in conducting their own experiments, gathering relevant ecological data, exploring food webs, learning classification skills, using technology to share data, comparing data with those of other communities and applying that information to protect local watersheds.

Join us at our workshop, we’ll show you how! During this workshop participants will receive an overview of stream ecology and watershed concepts based on research done at the Stroud Water Research Center. Taking our boots to the stream, we’ll then experience hands-on examination of leaf packs with live aquatic macroinvertebrates, including their identification and a look at the Leaf Pack Network® website and database.

Come learn about the Leaf Pack Experiment to examine the health of YOUR local streams! This workshop is intended for middle and high school teachers and environmental educators. The workshop is FREE. Participation is limited to 20 people.

WORKSHOP IS FULL! Contact Tara Muenz if you would like to be put on the waiting list, tmuenz@stroudcenter.org, 610-268-2153, ext. 301.

At the workshop you will receive:

Sponsored by: Stroud Water Research Center, 3M, and Tyler Arboretum