Potamopyrgus antipodarum
Potamopyrgus antipodarum
(New Zealand mudsnail)
Mollusks-Gastropods
Exotic
Collection Info
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Impacts

21 results for Potamopyrgus antipodarum (New Zealand mudsnail)
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Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
275313 CAHumboldtBig Lagoon2008 18010102 Mad-Redwoodestablished
256699 CAHumboldtBig Lagoon [~7 mi N of Trinidad]2008 18010102 Mad-Redwoodunknown
903003 CAHumboldtCollege Creek at Humboldt State University2015 18010102 Mad-Redwoodunknown
1695807 CAHumboldtFreshwater Creek2022 18010102 Mad-Redwoodestablished
1333509 CAHumboldtFreshwater Lagoon2016 18010102 Mad-Redwoodunknown
256684 CAHumboldtFreshwater Lagoon [just S of Orick]2008 18010102 Mad-Redwoodunknown
1724182 CAHumboldtJacoby Creek2023 18010102 Mad-Redwood 
1884170 CAHumboldtLittle River2025 18010102 Mad-Redwood 
1655240 CAHumboldtMad River at mouth of Lindsay Creek2020 18010102 Mad-Redwoodestablished
1657398 CAHumboldtMad River at mouth of Lindsay Creek2020 18010102 Mad-Redwoodestablished
1703901 CAHumboldtMad River Boat Ramp2022 18010102 Mad-Redwoodestablished
1695284 CAHumboldtMad River, Mad River County Park Boat Ramp2021 18010102 Mad-Redwoodestablished
1522560 CAHumboldtMad River, upstream side of County Boat Ramp apron near mouth2018 18010102 Mad-Redwoodestablished
1657396 CAHumboldtMad River, upstream side of County Boat Ramp apron near mouth2020 18010102 Mad-Redwoodestablished
270568 CAHumboldtRedwood Creek estuary in main channel along south levy and in south slough, Redwood National Park2010 18010102 Mad-Redwoodestablished
1447323 CAHumboldtRedwood Creek in Redwood National Park, CA2011 18010102 Mad-Redwoodestablished
903004 CAHumboldtRedwood Creek near Redwood National Park Visitor Center2015 18010102 Mad-Redwoodunknown
1695287 CAHumboldtRedwood Creek, Thomas H. Kuchel Visitor Center2021 18010102 Mad-Redwoodestablished
290711 CAHumboldtStone Lagoon, along shoreline2011 18010102 Mad-Redwoodestablished
1695286 CAHumboldtStone Lagoon, Stone Lagoon Visitor Center2021 18010102 Mad-Redwoodestablished
1703902 CAHumboldtWest Gannon Slough2022 18010102 Mad-Redwoodestablished

Data Disclaimer: Number of records does not imply species abundance. This summary represent collection records only and may not reflect the actual distribution of established populations. These data are preliminary or provisional and are subject to revision. They are being provided to meet the need for timely best science. The data have not received final approval by the U.S. Geological Survey (USGS) and are provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the data.

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 [1/23/2026].

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For general information and questions about the database, contact Wesley Daniel. For problems and technical issues, contact Matthew Neilson.