Recent Additions:

Zebra/Quagga Mussel Monitoring

The Center for Lakes & Reservoirs at Portland State University leads a volunteer monitoring program for the Western United States and has a database of western monitoring locations.

Early Detection and Monitoring

For early detection and monitoring of veliger larvae, please visit our companion web site


Zebra Mussels

Zebra Mussel Druse

Zebra Mussels on Rock

Mussel on Monofilament

Development of this web site is supported by the U.S. Fish & Wildlife Service through a partnership with the University of Texas - Arlington and contains information and resources derived from a variety of other partners and sources. Materials on this web site are free for public use and are not intended to be used for profit.

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