Specimen Information

Potamopyrgus antipodarum
Potamopyrgus antipodarum
(New Zealand mudsnail)

Specimen ID1420699
Common NameNew Zealand mudsnail
CountyContra Costa
LocalitySan Ramon Creek approx. 500m northwest of Livorna Rd.
Mapping AccuracyAccurate
HUC8 NameSuisun Bay
HUC8 Number18050001
HUC10 NameWalnut Creek-Frontal Suisin Bay Estuaries
HUC10 Number1805000102
HUC12 NameSan Ramon Creek
HUC12 Number180500010201
Collection Day15
Collection Month6
Collection Year2017
Year AccuracyActual
Potential Pathwayhitch hiker with stocked fish | hitch hiker on small watercraft
Comments80 individuals found in 600-organism subcount from bioassessment sample ID 207R01931 collected using State of CA SWAMP protocol for benthic macroinvertebrates
Record TypeNAS sighting report
VerifierBioAssessment Services
Number Collected80


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. [2021]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [12/5/2021].

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 queries involving fish, please contact Matthew Neilson. For queries involving invertebrates, contact Amy Benson.