Myriophyllum spicatum
Myriophyllum spicatum
(Eurasian watermilfoil)
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Exotic
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13 results for Myriophyllum spicatum (Eurasian watermilfoil)
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Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
1891637 CAPlacer[No locality description provided]2025 16050102 Truckee 
1892140 CASacramento[No locality description provided]2025 18020111 Lower American 
1890612 CASan Bernardino[No locality description provided]2025 18070203 Santa Ana 
1892244 CASan Diego[No locality description provided]2025 18070304 San Diego 
1892138 CASanta Clara[No locality description provided]2025 18050003 Coyote 
1891170 CASanta Clara[No locality description provided]2025 18050003 Coyote 
1891340 CAShasta[No locality description provided]2025 18020003 Lower Pit 
1891135 CAShasta[No locality description provided]2025 18020154 Clear Creek-Sacramento River 
1889638 CAShasta[No locality description provided]2025 18020154 Clear Creek-Sacramento River 
1890322 CAShasta[No locality description provided]2025 18020154 Clear Creek-Sacramento River 
1876405 CASolano[No locality description provided]2025 18050001 Suisun Bay 
1891445 CASonoma[No locality description provided]2025 18010110 Russian 
1891195 CAYolo[No locality description provided]2025 18020162 Upper Putah 

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 [4/11/2026].

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