Myocastor coypus
Myocastor coypus
(nutria)
Mammals
Exotic
Collection Info
Point Map
Species Profile
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Impacts

19 results for Myocastor coypus (nutria)
Download Data
Click here for listing in all states

Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
241995 OR Willamette Valley1960 17090012 Lower Willametteestablished
858933 ORClackamasGladstone2008 17090012 Lower Willametteestablished
258006 ORClackamasKellogg Creek2007 17090012 Lower Willametteestablished
258005 ORClackamasWillamette River/Oswego Creek2007 17090012 Lower Willametteestablished
258090 ORColumbiaGilbert River2007 17090012 Lower Willametteestablished
258091 ORColumbiaScappoose Creek/Multnomah Channel2007 17090012 Lower Willametteestablished
243176 ORMultnomahBybee Lake, Portland.2002 17090012 Lower Willametteestablished
258023 ORMultnomahColumbia Slough2007 17090012 Lower Willametteestablished
858934 ORMultnomahDamascus2008 17090012 Lower Willametteestablished
858957 ORMultnomahDamascus2008 17090012 Lower Willametteestablished
858911 ORMultnomahDamascus2009 17090012 Lower Willametteestablished
858928 ORMultnomahGladstone2008 17090012 Lower Willametteestablished
258025 ORMultnomahJohnson Creek (lower)2007 17090012 Lower Willametteestablished
858942 ORMultnomahLake Oswego2008 17090012 Lower Willametteestablished
858915 ORMultnomahLake Oswego2008 17090012 Lower Willametteestablished
858924 ORMultnomahLake Oswego2009 17090012 Lower Willametteestablished
858925 ORMultnomahPortland2008 17090012 Lower Willametteestablished
258116 ORMultnomahWillamette River, confluence with Columbia River2007 17090012 Lower Willametteestablished
243177 ORMultnomahWillamette River, Ross Island, Portland2003 17090012 Lower Willametteestablished

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.

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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 [2/5/2026].

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