Skip to main content
U.S. flag

An official website of the United States government

The Dragonfly Mercury Project—Story Map

July 22, 2020

The Dragonfly Mercury Project is a citizen science framework for monitoring mercury pollution in U.S. national parks using dragonfly larvae as biosentinels. This Story Map provides an overview of the Project and includes an interactive map displaying results from across the country. Dragonflies were sampled from 100 U.S. national parks, including very remote areas.