Specimen Information

Hydrilla verticillata [unknown biotype]
(unknown biotype hydrilla)

Specimen ID1633923
Speciesverticillata [unknown biotype]
Common Nameunknown biotype hydrilla
LocalityConnecticut River at Threemile Brook
Mapping AccuracyAccurate
HUC8 NameOutlet Connecticut River
HUC8 Number01080205
HUC10 NameMill River-Connecticut River
HUC10 Number0108020501
HUC12 NamePecousic Brook-Connecticut River
HUC12 Number010802050102
Collection Day15
Collection Month9
Collection Year2018
Year AccuracyActual
Potential Pathwayreleased aquarium | dispersed
Reference 1
Ref. Number:34016
Author:GZA GeoEnvironmental, Inc.
Title:Mapping of Invasive Aquatic Species in the Connecticut River with a focus on Hydrilla verticillata & Trapa natans
Publisher:Massachusetts Department of Conservation and Recreation Office of Water Resources, Lakes and Ponds Program
Pages:30 pp
CommentsVery high density in Sept. 2018 survey, but not found in June 2019. No tubers in core samples.
Record TypeLiterature
Earliest Recordcounty
VerifierMassachusetts Department of Conservation & Recreation


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Citation information: U.S. Geological Survey. [2022]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [10/1/2022].

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