Myocastor coypus
Myocastor coypus

62 results for Myocastor coypus (nutria)
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Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
258022 WAClarkColumbia River/Hayden Island2007 17080003 Lower Columbia-Clatskanieestablished
163872 WAClarkRidgefield National Wildlife Refuge2005 17080003 Lower Columbia-Clatskanieestablished
1656910 WAClarkRidgefield National Wildlife Refuge2021 17080003 Lower Columbia-Clatskanieestablished
163873 WAClarkSteigerwald Lake National Wildlife Refuge2005 17080001 Lower Columbia-Sandyestablished
255112 WACowlitzAbernathy Creek2007 17080003 Lower Columbia-Clatskanieestablished
255114 WACowlitzCoal Creek2007 17080003 Lower Columbia-Clatskanieestablished
255119 WACowlitzDelameter Creek2007 17080005 Lower Cowlitzestablished
255117 WACowlitzGermany Creek2007 17080003 Lower Columbia-Clatskanieestablished
255208 WACowlitzKalama River (lower)2007 17080003 Lower Columbia-Clatskanieestablished
255212 WACowlitzLewis River (mouth)2007 17080003 Lower Columbia-Clatskanieestablished
255124 WACowlitzLongview2007 17080003 Lower Columbia-Clatskanieestablished
255122 WACowlitzOstrander Creek2007 17080005 Lower Cowlitzestablished
255120 WACowlitzSilver Lake2007 17080005 Lower Cowlitzestablished
255084 WAGrays HarborChehalis River (lower)2007 17100105 Grays Harborestablished
255090 WAGrays HarborChehalis River/Garrard Creek2007 17100103 Upper Chehalisestablished
241851 WAKingGreen River area1935 17110013 Duwamishestablished
283649 WAKingKenmore, stormwater pond2012 17110012 Lake Washingtonestablished
241852 WAKingLake Washington1948 17110012 Lake Washingtonestablished
250073 WAKingLake Washington1958 17110012 Lake Washingtonestablished
166615 WAKingLake Washington2006 17110012 Lake Washingtonestablished
255020 WAKingLake Washington2007 17110012 Lake Washingtonestablished
241831 WAKingSammamish River1941 17110012 Lake Washingtonestablished
255019 WAKingSammamish River2007 17110012 Lake Washingtonestablished
1468051 WAKingSammamish River2018 17110012 Lake Washingtonunknown
241832 WAKingSeattle area1943 17110019 Puget Soundestablished

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.


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. [2022]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [8/10/2022].

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