Specimen Information

Hydrilla verticillata [monoecious]
Hydrilla verticillata [monoecious]
(monoecious hydrilla)

Specimen ID1670476
Speciesverticillata [monoecious]
Common Namemonoecious hydrilla
LocalityAlum Creek State Park - multiple locations
Mapping AccuracyAccurate
HUC8 NameUpper Scioto
HUC8 Number05060001
HUC10 NameHeadwaters Alum Creek
HUC10 Number0506000114
HUC12 NameBig Run-Alum Creek
HUC12 Number050600011403


Collection Day7
Collection Month10
Collection Year2021
Year AccuracyActual
Potential Pathwayhitch hiker on small watercraft
CommentsObserved by ODNR Fisheries staff during annual sampling. Multiple locations throughout waterbody. From N. Radabaugh: Most of the shoreline sampled had thick patches of hydrilla in water less than 6ft, and shallow bays were even more extensively covered. Some of the worst areas seemed to be in the Big Run arm of the lake (the west arm where the lake breaks into two). This area is shallower than the main lake and had areas of hydrilla growing from shore out several hundred feet into depths of around 8ft.
Record TypeNAS sighting report
Earliest Recordlocale
VerifierIan Pfingsten
Number Collected10000


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Citation information: U.S. Geological Survey. [2022]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [10/3/2022].

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