Myriophyllum spicatum
Myriophyllum spicatum
(Eurasian watermilfoil)
Plants
Exotic
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10 results for Myriophyllum spicatum (Eurasian watermilfoil)
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Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
1820733 ORClackamas[No locality description provided]2015 17090007 Middle Willamette 
1820734 ORClackamas[No locality description provided]2015 17090007 Middle Willamette 
1820735 ORClackamas[No locality description provided]2015 17090007 Middle Willamette 
1820736 ORClackamas[No locality description provided]2015 17090007 Middle Willamette 
1823983 ORClackamas[No locality description provided]2016 17090007 Middle Willamette 
1820737 ORClackamasWillamette River2015 17090007 Middle Willamette 
1820798 ORMarion[No locality description provided]2015 17090007 Middle Willamette 
1820799 ORMarion[No locality description provided]2015 17090007 Middle Willamette 
1820800 ORMarionWillamette River2015 17090007 Middle Willamette 
1823944 ORPolkWillamette River2016 17090007 Middle Willamette 

Data Disclaimer: Number of records does not imply species abundance. This summary represent collection records only and may not reflect the actual distribution of established populations. These data are preliminary or provisional and are subject to revision. They are being provided to meet the need for timely best science. The data have not received final approval by the U.S. Geological Survey (USGS) and are provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the data.

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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. [2026]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [1/20/2026].

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