Pennsylvania's Zebra and Quagga Mussel Monitoring Network
Supported in part by the Pennsylvania Sea Grant program
Dedicated to protecting Pennsylvania's aquatic habitats
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Distribution Maps  

Zebra mussels probably came to the Great Lakes in the ballast tanks of ships. They were first discovered in Lake St. Clair in 1988, and found in Lake Erie in the late 1980's. In 1991, quagga mussels were found in Lake Erie. Since then, zebra mussels have spread and become established in several inland lakes and rivers in northwestern Pennsylvania including Edinboro and Sandy lakes; the Conneauttee, Conewango, and French creeks; and the upper Allegheny River. Zebra mussels have also been found in the lower Allegheny, Monongahela and upper Ohio Rivers, and in a diving a quarry in Bethlehem. In addition, quagga mussels have been found in Clover Creek quarry (also known as Blue Hole quarry) near Williamsburg. In 2007, zebra mussels were discovered near Lawrenceville in Cowanesque Lake, a tributary to the Susquehanna River.

Pennsylvania maps:
2007 Pennsylvania Zebra and Quagga Mussel Reports in an interactive Google Earth map that contains all the Network Monitor's report along with high-resolution aerial and satellite imagery, terrain, road and street labels, and more. (Note: You must have the free Google Earth installed to view this file.)

If you have the Google Earth installed, double click the link above to explore zebra and quagga mussel sightings in Pennsylvania.

  • Double click on the red and yellow pins to view information for each site.

If you do not have Google Earth installed, view the images below instead
(no interactivity available)

   JPG Maps

   ArcView Maps (Users must have ArcView software to view these files)

National maps:

 

Our Financial Supporters:

Pennsylvania Sea Grant Department of Environmental ProtectionClear into the Future  PA Coastal Zone Management Program

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NETWORK PARTNERS:
Pennsylvania Department of Environmental Protection
Pennsylvania Coastal Zone Management Program
Pennsylvania Fish and Boat Commission
Philadelphia Water Department
Western Pennsylvania Conservancy
Normandeau Associates, Inc.
U.S. Army Corps of Engineers
Erie County Department of Health
Exelon Corporation