Myriophyllum spicatum
Myriophyllum spicatum
(Eurasian watermilfoil)

28 results for Myriophyllum spicatum (Eurasian watermilfoil)
Download Data
Click here for listing in all states

Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
1256727 NHCarrollMountain Pond1992 01060003 Piscataqua-Salmon Fallsestablished
229056 NHCarrollMountain Pond, U.S. Fish and Wildlife Refuge, Brookfield1992 01060003 Piscataqua-Salmon Fallsestablished
248050 NHCarrollMountain Pond, U.S. Fish and Wildlife Refuge, Brookfield2007 01060003 Piscataqua-Salmon Fallsestablished
1409895 NHCheshireBackwater coves of the Connecticut River outside (SW) of the HInsdale boat launch cove2004 01080107 West River-Connecticut Riverunknown
1409904 NHCheshireConnecticut River, Norm's marina and adjacent areas of the Connecticut River2004 01080107 West River-Connecticut Riverunknown
1409921 NHCheshireCT River in vicinity of islands between Brattleboro, VT and Hinsdale, NH along Rte 1192007 01080107 West River-Connecticut Riverunknown
1409812 NHCheshireCT River site off the TransCanada boat launch on Pine St., No. Walpole2006 01080106 Black River-Connecticut Riverunknown
1409918 NHCheshireHinsdale boat launch cove, setback/ backwater area of Connecticut River; boat launch and access to cove off of Prospect st which is off Rte 119 just north of Hinsdale village2004 01080107 West River-Connecticut Riverunknown
1409820 NHGraftonClay Brook, just below the covered bridge (Edgel Bridge) and before its convergence with the CT River2006 01080104 Waits River-Connecticut Riverunknown
248051 NHGraftonConnecticut River south of Hanover2007 01080104 Waits River-Connecticut Riverestablished
879765 NHGraftonConnecticut River, Wilder Dam2006 01080104 Waits River-Connecticut Riverestablished
1409909 NHGraftonCT River south of the town boat launch on Boat Landing Rd., off of Rte 10 at the south end of Orford village2007 01080104 Waits River-Connecticut Riverunknown
1409898 NHGraftonCT River, just above Wilder Dam and just north of the TransCanada substation on the shore2006 01080104 Waits River-Connecticut Riverunknown
1409871 NHGraftonLower portion/mouth of Mink Brook, before convergence with the CT River; just below parking lot /substation at start of recreational trail (Mink Brook trail) off of Rte 10 at south end of Hanover village2007 01080104 Waits River-Connecticut Riverunknown
1256725 NHGraftonMascoma Lake1999 01080106 Black River-Connecticut Riverestablished
254777 NHGraftonMascoma Lake, Enfield Township2000 01080106 Black River-Connecticut Riverestablished
248052 NHGraftonMascoma Lake, Enfield Township2007 01080106 Black River-Connecticut Riverestablished
1256729 NHGraftonPost Pond2010 01080104 Waits River-Connecticut Riverestablished
1256739 NHHillsboroughMine Falls Pond2000 01070004 Nashua Riverestablished
862514 NHHillsboroughNashua Canal, Nashua, NH2013 01070004 Nashua Riverestablished
1256807 NHHillsboroughNashua River Mine Falls Impoundment2010 01070004 Nashua Riverestablished
862513 NHHillsboroughNashua River, behind Public Works grounds, just off Rt. 111 at public boat launch and dam, ca. 100 meters upstream from dam2013 01070004 Nashua Riverestablished
879782 NHMerrimackTuree Pond in Merrimack County, near Bow2015 01070006 Merrimack Riverestablished
1633824 NHSullivanConnecticut River1995 01080106 Black River-Connecticut Riverestablished
879763 NHSullivanConnecticut River, Hoyt's Landing, Springfield1995 01080106 Black River-Connecticut 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.


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. [2024]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [6/14/2024].

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.