NAS - Nonindigenous Aquatic Species

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Welcome to the Zebra Mussel and Quagga Mussel Information Resource Page

zebra mussel image Zebra and Quagga Mussel Information

blueballZebra mussel fact sheet
blueballQuagga mussel fact sheet
blueballZebra mussel FAQ (Frequently asked questions)
blueballZebra mussel vs. Quagga mussel FAQ
blueballResponses to Student Questionaires

zebra mussel image Zebra and Quagga Mussel - U.S. Distribution Information


blueball Current Zebra Mussel Sightings Distribution (Updated daily)
blueball Current Quagga Mussel Sightings Distribution (Updated daily)
blueball Animated Annual Distribution Map


blueball Current Zebra and Quagga mussels map (High Resolution JPEG) or pdf icon - click to download map (PDF)
blueball U. S. Distribution Maps (low resolution)

1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011

blueball Zebra and Quagga Mussel Distribution in California (JPG format)
blueball Quagga and Zebra Mussels in the Western United States (PDF) or JPEG


blueball Quagga Mussel Lakes/Reservoirs List Outside The Great Lakes
blueball Zebra Mussel Time Series Map
blueball Zebra Mussel Distribution in U. S. Lakes Map
blueball Zebra Mussel Query By State

zebra mussel image Zebra Mussel News

--Significant Reports--

blueball Evidence of quagga mussels found in Nevada's Lahontan and Rye Patch reservoirs (May 2011).

blueball First zebra mussels found in Massachusetts, Laurel Lake (July 2009).

blueball First zebra mussel found in Texas, Lake Texoma (April 2009).

blueball Zebra mussel DNA confirmed from Electric Lake in Utah (November 2008).

blueball Both zebra and quagga mussel larvae found in four reservoirs northwest of Denver (September 2008).

blueball Zebra mussels found in Pueblo Reservoir, an impoundment on the Arkansas River, just west of Pueblo, Colorado (January 2008).

blueball Zebra mussels found in San Justo Reservoir in central California (January 2008).

blueball Zebra mussels found just upriver from Kansas City, Kansas in Perry Lake (October 2007).

blueball Quagga mussels found in the Colorado River at Lake Mead (January 2007).

zebra mussel image Photo Gallery

blueball Zebra Mussel (Dreissena polymorpha)
blueball Quagga Mussel (Dreissena rostriformis bugensis)

zebra mussel image Journals with Zebra Mussel Information


Note: Some of the documents on this page are in PDF format. Adobe Acrobat Reader or similar software is required to view them.

For more information, contact: Amy Benson,
This page updated July 8, 2011
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