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 January 2008. 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
Purpose:
The data are an essential part of the Department of the Interior's Nonindigenous Aquatic Species Program, <http://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.
Supplemental_Information:
Summary: Zebra mussel (Dreissena polymorpha) locations in the Great Lakes region (2008)
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1988
Ending_Date: 200801
Currentness_Reference: Ground Condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As Needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -94.204995
East_Bounding_Coordinate: -71.165642
North_Bounding_Coordinate: 48.386948
South_Bounding_Coordinate: 37.006191
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: biota
Place:
Place_Keyword_Thesaurus: Uncontrolled Keywords
Place_Keyword: Zebra
Place_Keyword: mussel
Place_Keyword: Dreissena
Place_Keyword: polymorpha
Place_Keyword: great
Place_Keyword: lakes
Place_Keyword: invasive
Place_Keyword: species
Place_Keyword: Great Lakes
Access_Constraints: None
Use_Constraints:
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.
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.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Shapefile
Format_Information_Content:
Zebra mussel (Dreissena polymorpha) locations in the Great Lakes region (2008)
File_Decompression_Technique: Shapefile compressed with GNU zip
All reports in the data base on zebra mussel locations were confirmed as
being zebra mussels.
Quantitative_Attribute_Accuracy_Assessment:
Attribute_Accuracy_Value: 99%, 1% Error
Attribute_Accuracy_Explanation:
A zebra mussel location was included in the data base if it was
confirmed by a trained biologist or by someone who had received training
to be able to identify zebra mussels.
Logical_Consistency_Report:
No tests for logical consistency have been performed on this map layer.
Completeness_Report:
This data base is by no means an all inclusive listing of zebra mussel
locations. But it is a fair and accurate representation of their
distribution in North America.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Zebra mussel sightings were reported with varying levels of accuracy.
Some of the reports were as latitude-longitude coordinates, some as
river miles, and others as just a lake, beach, harbor, or a
water body and nearest town name. The locations were digitized as a
single point in the reported water body at the place nearest to the
town. If no specific location was reported in a lake, the point was
digitized in the middle. These were all small lakes; the Great Lakes
had specific locations associated with them. Each zebra mussel sighting
location was checked by manual comparison of the on-screen point with
hard copy maps.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator:
Sources for these data are numerous. They include federal, State,
and municipal governments; engineering and environmental firms;
universities; industries; and public utility companies.
Publication_Date: Unknown
Title: Zebra Mussel reports
Other_Citation_Details:
The sources for these data are too numerous to list here. However,
detailed information on each zebra mussel sighting is available from
the Florida Integrated Science Center at the address listed in the
contact information.
Type_of_Source_Media: Variable
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1988
Ending_Date: 2002
Source_Currentness_Reference: Ground condition
Source_Citation_Abbreviation: ZMR
Source_Contribution: Locations of zebra mussel sightings
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Geological Survey, Florida Integrated Science Center
Publication_Date: Unknown
Title: Zebra Mussel locations
Other_Citation_Details: This source is updated whenever new reports (ZMR) are received.
Type_of_Source_Media: Electronic mail
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1988
Ending_Date: 2002
Source_Currentness_Reference: Ground condition
Source_Citation_Abbreviation: ZML
Source_Contribution: Zebra mussel locations
Source_Information:
Source_Citation:
Citation_Information:
Originator: National Atlas of the United States
Publication_Date: 19990326
Title: Hydrography Features of the United States
Source_Scale_Denominator: 2000000
Type_of_Source_Media: Online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1995
Ending_Date: 1999
Source_Currentness_Reference: Ground condition
Source_Citation_Abbreviation: Atlas-HYDRO9903
Source_Contribution: Spatial information
Source_Information:
Source_Citation:
Citation_Information:
Originator: National Atlas of the United States
Publication_Date: 199910
Title: Zebra Mussel Distribution in North America
Type_of_Source_Media: Online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1988
Ending_Date: 1999
Source_Currentness_Reference: Ground condition
Source_Citation_Abbreviation: Atlas-ZML99
Source_Contribution: Zebra mussel locations and attributes
Source_Information:
Source_Citation:
Citation_Information:
Originator: National Atlas of the United States
Publication_Date: 199911
Title: Hydrography Features of the United States
Source_Scale_Denominator: 2000000
Type_of_Source_Media: Online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1995
Ending_Date: 1999
Source_Currentness_Reference: Ground condition
Source_Citation_Abbreviation: Atlas-HYDRO9911
Source_Contribution: Spatial information
Source_Information:
Source_Citation:
Citation_Information:
Originator: National Atlas of the United States
Publication_Date: 1998
Title: County Boundaries of the United States
Source_Scale_Denominator: 2000000
Type_of_Source_Media: Online
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1998
Source_Currentness_Reference: Publication date
Source_Citation_Abbreviation: Atlas-CNTY98
Source_Contribution: Spatial information
Source_Information:
Source_Citation:
Citation_Information:
Originator: National Atlas of the United States
Publication_Date: 200006
Title: Zebra Mussel Distribution in North America
Type_of_Source_Media: Online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1988
Ending_Date: 2000
Source_Currentness_Reference: Ground condition
Source_Citation_Abbreviation: Atlas-ZML00
Source_Contribution: Zebra mussel locations and attributes
Source_Information:
Source_Citation:
Citation_Information:
Originator: National Atlas of the United States
Publication_Date: 200112
Title: Zebra Mussel Distribution in North America
Type_of_Source_Media: Online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1988
Ending_Date: 2001
Source_Currentness_Reference: Ground condition
Source_Citation_Abbreviation: Atlas-ZML01
Source_Contribution: Zebra mussel locations and attributes
Source_Information:
Source_Citation:
Citation_Information:
Originator: National Atlas of the United States
Publication_Date: 200301
Title: Streams and Waterbodies of the United States
Source_Scale_Denominator: 2000000
Type_of_Source_Media: Online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1995
Ending_Date: 2002
Source_Currentness_Reference: Ground condition
Source_Citation_Abbreviation: Atlas-HYDRO2003
Source_Contribution: Spatial information
Source_Information:
Source_Citation:
Citation_Information:
Originator: National Atlas of the United States
Publication_Date: 200208
Title: County Boundaries of the United States, 2001
Source_Scale_Denominator: 2000000
Type_of_Source_Media: Online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1972
Ending_Date: 2001
Source_Currentness_Reference: Ground condition
Source_Citation_Abbreviation: Atlas-CNTY2001
Source_Contribution: Spatial and attribute information
Source_Information:
Source_Citation:
Citation_Information:
Originator: National Atlas of the United States
Publication_Date: 200305
Title: Zebra Mussel Distribution in North America
Type_of_Source_Media: Online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1988
Ending_Date: 2002
Source_Currentness_Reference: Ground condition
Source_Citation_Abbreviation: Atlas-ZML02
Source_Contribution: Zebra mussel locations and attributes
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 200503
Title: Zebra Mussel Distribution for 2003, 2004, and part of 2005
Type_of_Source_Media: Electronic mail
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 2003
Ending_Date: 200502
Source_Currentness_Reference: Ground condition
Source_Citation_Abbreviation: UpdateZM2005
Source_Contribution: Zebra mussel locations and attributes
Process_Step:
Process_Description:
After receiving a report of a confirmed zebra mussel sighting, the
location was found on a paper map. The scale of that map varied; we
used the finest resolution available. The point was then digitized on-
screen using ArcInfo's arcedit feature, and was referenced to EPA
Reach File Version 3.0 1:100,000-scale data (ArcInfo coverages in
Albers Equal Area Projection).
Source_Used_Citation_Abbreviation: ZMR
Process_Date: Unknown
Source_Produced_Citation_Abbreviation: ZML
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Amy Benson
Contact_Position: Fishery Biologist
Contact_Address:
Address_Type: Mailing and physical address
Address: Florida Integrated Science Center, 7920 NW 71st Street
The National Atlas received the ZML data file from the Florida
Integrated Science Center in ArcInfo export format, and it was read
into ArcInfo and converted to Geographic coordinates. The file was
compared to the Hydrography Features (Streams and Waterbodies) map
layer, and several points were adjusted to fall on water features rather
than on land. The map layer was converted to shapefile format.
Additional points were appended to the map layer, using similar
procedures as were used to produce the original map layer. Points were
compared to the current Hydrography Features (Streams and Waterbodies)
map layer, and several points were adjusted to fall on water features
rather than on land. Also, the file was compared to the County
Boundaries layer to verify the county and State where zebra mussels were
located.
Additional points were appended to the map layer, using similar
procedures as were used to produce the original map layer. Points were
compared to the Hydrography Features (Streams and Waterbodies) map
layer, and several points were adjusted to fall on water features rather
than on land. Also, the file was compared to the County Boundaries
layer; several points were adjusted to fall in the correct county and
State as listed in their location descriptions. Attribute items that
had specified the age classification and substrate to which the specimen
was attached were dropped.
Additional points were appended to the map layer, using similar
procedures as were used to produce the original map layer. The new
points were compared to the latest National Atlas Streams and
Waterbodies map layer to make sure that the features were located on the
correct named water feature and that the features were on the water
rather than on land. Also, the points were compared to the National
Atlas 2001 County Boundaries layer; several points were adjusted to fall
in the correct county as listed in their location descriptions.
Additional points were appended to the map layer, using similar
procedures as were used to produce the original map layer. The new
points were compared to the latest National Atlas Streams and
Waterbodies map layer to make sure that the features were located on the
correct named water feature and that the features were on the water
rather than on land. Three water feature names were changed to match
the name given in the Atlas data. Also, the points were compared to the
National Atlas 2001 County Boundaries layer; several points were
adjusted to fall in the correct county as listed in their location
descriptions.
Attribute_Definition_Source: National Atlas of the United States
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 2433
Attribute:
Attribute_Label: Y
Attribute_Definition: The year of the zebra mussel sighting.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: The year is unknown.
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Range_Domain:
Range_Domain_Minimum: 1988
Range_Domain_Maximum: 2005
Attribute:
Attribute_Label: St
Attribute_Definition:
The 2-letter FIPS code for the State in which the zebra mussel sighting
falls, or a three-letter abbreviation for the Canadian province in which
the sighting falls.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name:
Codes for the Identification of the States, the District of Columbia
and the Outlying Areas of the United States, and Associated Areas,
FIPS PUB 5-2.
Codeset_Source: U.S. Department of Commerce
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: ONT
Enumerated_Domain_Value_Definition: Province of Ontario, Canada.
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Enumerated_Domain:
Enumerated_Domain_Value: QUE
Enumerated_Domain_Value_Definition: Province of Quebec, Canada.
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute:
Attribute_Label: Co
Attribute_Definition:
The name of the county where the zebra mussel sighting falls. For
sightings in Canada, this field may contain the Census Division name or
may be blank.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name:
Counties and Equivalent Entities of the United States, Its
Possessions, and Associated Areas, FIPS PUB 6-4.
Codeset_Source: U.S. Department of Commerce
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: Standard Geographical Classification, 2001, Census Divisions
Codeset_Source: Statistics Canada
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: <blank>
Enumerated_Domain_Value_Definition:
The sighting falls in Canada and the Census Division name is not
available.
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute:
Attribute_Label: Fips
Attribute_Definition:
The State and county FIPS code from the TIGER/Line Precensus files, for
the location where the zebra mussel sighting falls.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name:
Counties and Equivalent Entities of the United States, Its
Possessions, and Associated Areas, FIPS PUB 6-4.
Codeset_Source: U.S. Department of Commerce
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: <blank>
Enumerated_Domain_Value_Definition: The sighting falls in Canada.
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute:
Attribute_Label: Locality
Attribute_Definition: The specific location of the zebra mussel sighting.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain: There is no predefined set of valid location descriptions.
Attribute:
Attribute_Label: SPEC_ID
Attribute_Definition:
A unique record number in the USGS Nonindigenous Aquatic Species Database
Attribute:
Attribute_Label: GENUS
Attribute_Definition: genus
Attribute:
Attribute_Label: SPECIES
Attribute_Definition: species
Attribute:
Attribute_Label: COMMON
Attribute_Definition: common name
Attribute:
Attribute_Label: YEAR
Attribute_Definition:
year of collection or observation (could also be a publication date if actual collection date not reported in the literature)
Attribute:
Attribute_Label: STATE
Attribute_Definition: >state
Attribute:
Attribute_Label: COUNTY
Attribute_Definition: county
Attribute:
Attribute_Label: LOCALITY
Attribute_Definition: specific (as possible) location
Attribute:
Attribute_Label: HUC
Attribute_Definition: USGS hydrologic unit code
Attribute:
Attribute_Label: LAT
Attribute_Definition: latitude
Attribute:
Attribute_Label: LON
Attribute_Definition: longitude
Attribute:
Attribute_Label: LAT_LON_SO
Attribute_Definition:
source of coordinates (3 options)
1. Reported = given by collector or observer
2. GNIS (USGS Geographic Names Information System lookup (online))
3. Map derived = best estimate based on the reported location description
Generated by mp version 2.9.1 on Thu Mar 20 14:20:07 2008