20220503 08433100 1.0 TRUE Merrimack Dragonfly Mercury Project StoryMap component --- A feature layer of sites where community members sampled dragonflies to test for mercury in the Merrimack River watershed. Last updated in May 2026 by Hannah Clipp (AMC GIS Scientist). <p>Component of the Merrimack Dragonfly Mercury Project StoryMap (https://storymaps.arcgis.com/stories/cbc7bb3763484b80a04653ae196bfe69), which was funded by multiple sources and created by the Appalachian Mountain Club to describe the Merrimack Dragonfly Mercury Project, provide historical context for mercury pollution in the Merrimack River watershed, and highlight the results of five years of sampling by over 1,000 public participants.</p><p>This feature layer is solely intended to be used as a component of the Merrimack Dragonfly Mercury Project StoryMap. Permission to use this feature layer for other purposes should be obtained from the Appalachian Mountain Club. Certain elements of the shapefile may not be fully accurate or comprehensive.</p>Originally created by Cathy Poppenwimer (former AMC GIS Scientist) and updated by Hannah Clipp (current AMC GIS Scientist), in collaboration with the project lead, Sarah Nelson (AMC Director of Research).Merrimack Dragonfly Mercury ProjectDragonfly Mercury ProjectDMPAppalachian Mountain ClubMerrimack River Watershed