Follow the Hatch — Aquatic Insects in Lancaster County’s Streams and Rivers

June 8, 2022, 6:00 PM - 7:30 PM EDT Free
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Follow the Hatch — Aquatic Insects in Lancaster County’s Streams and Rivers

Newly hatched mayflies resting on a tree, photo by Keith Williams.

Photo: Keith Williams

  • When: Wednesday, June 8, 2022, 6–7:30 p.m. EDT
  • Where: Columbia Crossing River Trails Center, 41 Walnut Street, Columbia, PA 17512
  • Cost: Free. Registration is required.

Join us for a deep dive into the world of aquatic insects!
Did you know that aquatic macroinvertebrates are not only fascinating creatures but also our best indicator of the health of Lancaster County’s streams and rivers? Join John Jackson, Ph.D., of Stroud Water Research Center and Keith Williams of Lancaster Conservancy for a deep dive into the world of mayflies, stoneflies, caddisflies, and the many other tiny creatures that call our streams home.

This presentation at the beautiful Columbia Crossing River Trails Center will include macroinvertebrates’ natural history, their use as a tool to understand water quality and stream health, and their importance in gauging Lancaster County’s initiatives to restore our streams and rivers. We will also discuss the “snowstorm” of mayflies that emerges from the Susquehanna River each spring.

Sponsored by:

Logos for Lancaster Conservancy, Susquehanna National Heritage Area, and Stroud Water Research Center.

What is Lancaster Water Week?
Now in its sixth year, Lancaster Water Week celebrates the 1,400 miles of streams and rivers in Lancaster County, Pennsylvania. These cricks and creeks are the source of our drinking water, drive economic and agricultural growth, and allow us to escape into nature to fish, paddle, and swim. Many of these beautiful streams are polluted, but there is an incredible effort underway to bring them back to health in our lifetime. Learn more