Myriophyllum spicatum
Myriophyllum spicatum
(Eurasian watermilfoil)
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37 results for Myriophyllum spicatum (Eurasian watermilfoil)
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Click here for listing in all states

Page:12
Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
1740600 AZCochise[No locality description provided]2015 15050301 Upper Santa Cruz 
229352 AZCochiseSan Pedro-Willcox drainage1985 15050202 Upper San Pedroestablished
1890295 AZCoconino[No locality description provided]2025 15060201 Big Chino-Williamson Valley 
1892279 AZGila[No locality description provided]2025 15060101 Black 
229353 AZGreenleeUpper Gila drainage1985 15040002 Upper Gila-Mangasestablished
1811441 AZLa Paz[No locality description provided]2012 15030104 Imperial Reservoir 
1811442 AZLa Paz[No locality description provided]2012 15030105 Bouse Wash 
228591 AZLa PazColorado River Indian Tribe Reservation1997 15030104 Imperial Reservoirestablished
1436254 AZLa PazIn Devil's Lake on the south side of the Colorado River, just downstream from Picacho State Rec. Area.1986 15030104 Imperial Reservoirestablished
1811439 AZLa PazLake Havasu2012 15030204 Bill Williams 
1811440 AZLa PazLake Havasu2012 15030204 Bill Williams 
229291 AZMaricopaEncanto Park Lake, near Phoenix1946 15060106 Lower Saltestablished
1811578 AZMohave[No locality description provided]2014 15030101 Havasu-Mohave Lakes 
1811579 AZMohaveColorado River2014 15030101 Havasu-Mohave Lakes 
1397809 AZMohaveColorado River @ Bullhead Community Park2014 15030101 Havasu-Mohave Lakesunknown
1397601 AZMohaveColorado River, downstream of Davis Dam2014 15030101 Havasu-Mohave Lakesunknown
1808494 AZMohaveLake Havasu2011 15030101 Havasu-Mohave Lakes 
1811438 AZMohaveLake Havasu2012 15030101 Havasu-Mohave Lakes 
1815263 AZMohaveLake Havasu2014 15030101 Havasu-Mohave Lakes 
1815264 AZMohaveLake Havasu2014 15030101 Havasu-Mohave Lakes 
1811582 AZMohaveLake Havasu2014 15030101 Havasu-Mohave Lakes 
1811585 AZMohaveLake Havasu2014 15030101 Havasu-Mohave Lakes 
1811580 AZMohaveLake Havasu2014 15030101 Havasu-Mohave Lakes 
1811583 AZMohaveLake Havasu2014 15030101 Havasu-Mohave Lakes 
1811581 AZMohaveLake Havasu2014 15030101 Havasu-Mohave Lakes 
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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.

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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 [1/19/2026].

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