Specimen Information

Myriophyllum spicatum
Myriophyllum spicatum
(Eurasian watermilfoil)

Specimen ID1397847
Common NameEurasian watermilfoil
LocalityLong Lake
Mapping AccuracyAccurate
HUC8 NameLower St. Croix
HUC8 Number07030005
HUC10 NameBig Marine Lake-Saint Croix River
HUC10 Number0703000509
HUC12 NameSquare Lake-Saint Croix River
HUC12 Number070300050905
Collection Day16
Collection Month7
Collection Year2016
Year AccuracyActual
Potential Pathwayunknown
Reference 1
Ref. Number:24369
Author:Center for Invasive Species and Ecosystem Health.
Title:EDDMapS: Early detection and distribution mapping system
Publisher:The University of Georgia
CommentsJim Shaver from the Watershed District commissioned EOR to conduct CLP surveys on lakes in the watershed district. During the plant survey, EOR biologists documented EWM at multiple locations in Long Lake, May Township, Washington County. EWM plants had leaflet counts of up to 16 per side. The lake does not have a public access. Photos were submitted on July 16 to the MN DNR and confirmed on date July 22. AIS Team conducted a site inspection and found rooted EWM in Long Lake.; EDDMapS report
Record TypeLiterature
VerifierChip Welling


The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2024]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [6/23/2024].

Contact us if you are using data from this site for a publication to make sure the data are being used appropriately and for potential co-authorship if warranted.

For general information and questions about the database, contact Wesley Daniel. For problems and technical issues, contact Matthew Neilson.