Specimen Information

Myriophyllum spicatum
Myriophyllum spicatum
(Eurasian watermilfoil)
Plants
Exotic

Specimen ID168464
GroupPlants
GenusMyriophyllum
Speciesspicatum
Common NameEurasian watermilfoil
StateCA
CountyShasta
LocalityFall River
Mapping AccuracyAccurate
HUC8 NameLower Pit
HUC8 Number18020003
HUC10 NameTown of Pittville-Pit River
HUC10 Number1802000308
HUC12 NamePeacock Creek-Pit River
HUC12 Number180200030802
Map
+
Collection Year2003
Year AccuracyEstimated
Potential Pathwayreleased aquarium | dispersed
Statusestablished
Reference 1
Ref. Number:15856
Author:Klunk, S.
Date:2006
Title:California trout fishing and waterways threatened by weed.
Publisher:Central Valley Business Times, Stockton, California
Volume:2006
Issue:October 20
CommentsThe reference mentions that "In August 2003, Eurasian watermilfoil infestations slowed the river’s water flow and flooded 300 acres of grazing land when a levee collapsed," suggesting the population was well established prior to that date.
Record TypeLiterature
Earliest Recordlocale
Freshwater/MarineFreshwater
Specimen Impactflooding, crowding out of native vegetation, interferance with recreational activities


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Citation information: U.S. Geological Survey. [2022]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [8/10/2022].

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