Specimen Information

Myriophyllum spicatum
Myriophyllum spicatum
(Eurasian watermilfoil)
Plants
Exotic

Specimen ID1758463
GroupPlants
GenusMyriophyllum
Speciesspicatum
Common NameEurasian watermilfoil
StateCO
CountyJefferson
LocalityBowles Reservoir No. 1
Mapping AccuracyAccurate
HUC8 NameUpper South Platte
HUC8 Number10190002
HUC10 NameBear Creek
HUC10 Number1019000208
HUC12 NameOutlet Bear Creek
HUC12 Number101900020809
Map
Collection Day31
Collection Month10
Collection Year2024
Year AccuracyActual
Statusestablished
CommentsI have been monitoring this reservoir for several years. EWM was first seen in this reservoir in approx. 2005. EWM has slowly taken over this reservoir and now inundates approx. 90 percent of the area.
Record TypeNAS sighting report
VerifierIan Pfingsten
Number Collected150
Photo
Myriophyllum spicatum
Myriophyllum spicatum


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 [1/16/2026].

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