Sites in Cluster

Site Info


Search the Dataset

Welcome to the Macroinvertebrate Water Monitoring Map!

Environmental health requires monitoring streams and waterways to assess biological integrity and water quality. Aquatic macroinvertebrates are strong indicators of stream habitat health and can be used in habitat assessment. The Macroinvertebrate Water Monitoring Map shows the sites where macroinvertebrates are collected throughout Pennsylvania’s streams by the Department of Environmental Protection and other organizations, including the Carnegie Museum of Natural History. Each site is located on a stream from the National Hydrography Dataset. Each site can have more than one collection event. For each event a list of macroinvertebrate specimens collected can be viewed, typically identified to the genus level.

Using the Map

Step 1. Zoom in to an area by using your scroll wheel or double clicking on the map.

Step 2. Click on a cluster.

Step 3. Click on a site in the map or in the Sites in Cluster list.

Step 4. Click on a macroinvertebrate.


This web map is one piece of a larger project by the Carnegie Museum of Natural History focusing on compiling baseline data of macroinvertebrates in Pennsylvania.

James Whitacre, GIS Manager, Carnegie Museum of Natural History
Anika Wilcox, Digital Innovation Specialist, Carnegie Museums of Pittsburgh
Dr. John Wenzel, Director of Powdermill Nature Reserve, Carnegie Museum of Natural History

Special thanks to the Pennsylvania Department of Environmental Protection and the Somerset Conservation District.

For questions, comments, or issues, please email