The concern caused by the explosive spread of the zebra mussel, (Dreissena polymorpha), within the United States resulted in passage of the Nonindigenous Aquatic Nuisance Prevention and Control Act of 1990 (P.L. 101-646). The impact of this biofouling pest on the economy and ecological processes in the U.S. and Canada has required prompt action on a large scale to prevent further infestations and minimize ecological degradation. This map layer is a compilation of reports of confirmed zebra mussel sightings in the United States from 1988 to February 2005. It provides geographical and historical information to show distribution over time. The reports came from a variety of Federal, State, and municipal agencies, public utilities, universities, engineering and private consultant firms. The locations of confirmed sightings were registered at 1:100,000-scale on EPA Reach File Version 3.0 and are maintained as an ArcInfo export file. This is a revised version of the May 2003 map layer.
The data are an essential part of the Department of the Interior\'s Nonindigenous Aquatic Species Program, nas.er.usgs.gov. The data were compiled for use by resource managers to make them aware of zebra mussel occurrences so that they may help to control or prevent the spread of zebra mussels. These data are intended for geographic display and analysis at the national level, and for large regional areas. The data should be displayed and analyzed at scales appropriate for 1:2,000,000-scale data. No responsibility is assumed by the U.S. Geological Survey or the National Atlas of the United States in the use of these data
Summary: Zebra mussel (Dreissena polymorpha) locations within the Great Lakes
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None. Acknowledgment of the National Atlas of the United States of America and (or) the U.S. Geological Survey would be appreciated in products derived from these data
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Disclaimer. The Great Lakes Commission (GLC) and the Great Lakes Information Network (GLIN) cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. The Great Lakes Commission (GLC) and the Great Lakes Information Network (GLIN) make no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
Zebra mussel (Dreissena polymorpha) locations within the Great Lakes
Zebra mussel (Dreissena polymorpha) locations within the Great Lakes
Zebra mussel (Dreissena polymorpha) locations within the Great Lakes
Zebra mussel (Dreissena polymorpha) locations within the Great Lakes