QUAGGA AND ZEBRA MUSSEL SIGHTINGS DISTRIBUTION IN THE WESTERN UNITED STATES, 2007 - 2015

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Source: Esri, DigitalGlobe, GeoEye, i-cubed, USDA, USGS, AEX, Getmapping, Aerogrid, IGN, IGP, swisstopo, and the GIS User Community

") Quagga mussel sightings ") Zebra mussel sightings

CALIFORNIA CALIFORNIA (continued) NEVADA Parker Dam - 2007 Shadow Lake Estates lake - 2012 Lake Mead - 2007 Colorado River Aqueduct - 2007 Coachella Canal - 2012 Lake Mohave - 2007 Colorado RA at Hayfield - 2007 Ridgemark Golf Course - 2012 Lahontan Reservoir - 2011 Lake Matthews - 2007 Lake Piru - 2013 Rye Patch Reservoir - 2011 Lake Skinner - 2007 Lake Forest 1 - 2014 Dixon Reservoir - 2007 Lake Forest Keys - 2014 Lower Otay Reservoir - 2007 UTAH San Vicente Reservoir - 2007 ARIZONA Electric Lake - 2008 Murray Reservoir - 2007 Lake Havasu - 2007 Red Fleet Reservoir - 2009 Lake Miramar - 2007 Central Arizona Project Canal - 2007 Sand Hollow Reservoir - 2010 Sweetwater Reservoir - 2007 Lake Pleasant - 2007 Deer Creek Reservoir - 2015 San Justo Lake - 2008 Imperial Dam - 2008 El Capitan Reservoir - 2008 Salt River - 2008 TEXAS Lake Jennings - 2008 Lake Powell - 2012 Lake Texoma - 2009 Lake Ray Hubbard - 2011 Olivenhain Reservoir - 2008 COLORADO Ray Roberts Reservoir - 2012 Irvine Lake - 2008 Pueblo Reservoir - 2008 (Both Species) Lake Bridgeport - 2013 Rattlesnake Reservoir - 2008 Lake Granby - 2008 Lewisville Lake - 2013 Lake Ramona - 2009 Grand Lake - 2008 (Both Species) Walnut Canyon Reservoir - 2009 Willow Creek Reservoir - 2008 Belton Lake - 2013 Lake Lavon - 2013 Kraemer Basin - 2009 Shadow Mountain Reservoir - 2008 Anaheim Lake - 2009 Jumbo Lake - 2008 SOUTH DAKOTA Black and Gold Golf Course pond - 2010 Tarryall Reservoir - 2008 Lake Poway - 2010 Angostura Reservoir - 2014

Map produced by the U.S. Geological Survey, Nonindigenous Aquatic Species Database, March 12, 2015 http://nas.er.usgs.gov/taxgroup/mollusks/zebramussel/maps/Southwest_quagga.jpg