Myriophyllum spicatum
Myriophyllum spicatum
(Eurasian watermilfoil)
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3484 results for Myriophyllum spicatum (Eurasian watermilfoil)
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Specimen IDCommon NameStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
1708333 Eurasian watermilfoilALMadison[No locality description provided]2020 06030002 Wheeler Lake 
1740449 Eurasian watermilfoilBC [No locality description provided]2020 17020006 Okanogan 
1634054 Eurasian watermilfoilCAButte[No locality description provided]2020 18020159 Honcut Headwaters-Lower Featherestablished
1708349 Eurasian watermilfoilCASanta Clara[No locality description provided]2020 18050003 Coyote 
1675078 Eurasian watermilfoilCAYolo[No locality description provided]2020 18020162 Upper Putah 
1757913 Eurasian watermilfoilCOBoulder[No locality description provided]2020 10190005 St. Vrain 
1887061 Eurasian watermilfoilCTFairfield[No locality description provided]2020 01100006 Saugatuck 
1691236 Eurasian watermilfoilCTHartfordConnecticut River2020 01080205 Outlet Connecticut Riverestablished
1691237 Eurasian watermilfoilCTHartfordConnecticut River2020 01080205 Outlet Connecticut Riverestablished
1691238 Eurasian watermilfoilCTHartfordConnecticut River2020 01080207 Farmington Riverestablished
1691239 Eurasian watermilfoilCTHartfordConnecticut River2020 01080207 Farmington Riverestablished
1691240 Eurasian watermilfoilCTHartfordConnecticut River2020 01080207 Farmington Riverestablished
1691241 Eurasian watermilfoilCTHartfordConnecticut River2020 01080207 Farmington Riverestablished
1691242 Eurasian watermilfoilCTHartfordConnecticut River2020 01080207 Farmington Riverestablished
1691243 Eurasian watermilfoilCTHartfordConnecticut River2020 01080207 Farmington Riverestablished
1691244 Eurasian watermilfoilCTHartfordConnecticut River2020 01080207 Farmington Riverestablished
1691245 Eurasian watermilfoilCTHartfordConnecticut River2020 01080207 Farmington Riverestablished
1691246 Eurasian watermilfoilCTHartfordConnecticut River2020 01080207 Farmington Riverestablished
1691247 Eurasian watermilfoilCTHartfordConnecticut River2020 01080207 Farmington Riverestablished
1691248 Eurasian watermilfoilCTHartfordConnecticut River2020 01080207 Farmington Riverestablished
1691249 Eurasian watermilfoilCTHartfordConnecticut River2020 01080207 Farmington Riverestablished
1691250 Eurasian watermilfoilCTHartfordConnecticut River2020 01080207 Farmington Riverestablished
1691251 Eurasian watermilfoilCTHartfordConnecticut River2020 01080207 Farmington Riverestablished
1691252 Eurasian watermilfoilCTHartfordConnecticut River2020 01080205 Outlet Connecticut Riverestablished
1691374 Eurasian watermilfoilCTHartfordConnecticut River2020 01080207 Farmington Riverestablished
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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.

Disclaimer:

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 [2/19/2026].

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.