Myriophyllum heterophyllum
Myriophyllum heterophyllum
(variable-leaf watermilfoil)
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Native Transplant
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8 results for Myriophyllum heterophyllum (variable-leaf watermilfoil)
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Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
242106 MAMiddlesexLake Cochituate2000 01070005 Concord Riverestablished
234880 MAMiddlesexLake Whitehall (Reservoir), Hopkinton town1971 01070005 Concord Riverestablished
242083 MAMiddlesexLake Whitehall (Reservoir), Hopkinton town1974 01070005 Concord Riverestablished
1321176 MAMiddlesexSudbury River, between Wickford Rd bridge and Central St2015 01070005 Concord Riverestablished
232130 MAMiddlesexWhitehall Reservoir, Hopkinton1970 01070005 Concord Riverestablished
1671103 MAWorcester[No locality description provided]2017 01070005 Concord River 
1890204 MAWorcester[No locality description provided]2025 01070005 Concord River 
234871 MAWorcesterChauncy Lake, SW corner near boat ramp, Westborough town2001 01070005 Concord Riverestablished

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 [2/21/2026].

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