The Nonindigenous Occurrences section of the NAS species profiles has a new structure. The section is now dynamically updated from the NAS database to ensure that it contains the most current and accurate information. Occurrences are summarized in Table 1, alphabetically by state, with years of earliest and most recent observations, and the tally and names of drainages where the species was observed. The table contains hyperlinks to collections tables of specimens based on the states, years, and drainages selected. References to specimens that were not obtained through sighting reports and personal communications are found through the hyperlink in the Table 1 caption or through the individual specimens linked in the collections tables.

Oncorhynchus mykiss kamloops strain
(Kamloops trout)
Native Transplant
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Oncorhynchus mykiss kamloops strain

Common name: Kamloops trout

Native Range:
US auto-generated map Legend USGS Logo
Alaska auto-generated map
Hawaii auto-generated map
Caribbean auto-generated map
Puerto Rico &
Virgin Islands
Guam auto-generated map
Guam Saipan
Hydrologic Unit Codes (HUCs) Explained
Interactive maps: Point Distribution Maps

Nonindigenous Occurrences:

Table 1. States with nonindigenous occurrences, the earliest and latest observations in each state, and the tally and names of HUCs with observations†. Names and dates are hyperlinked to their relevant specimen records. The list of references for all nonindigenous occurrences of Oncorhynchus mykiss kamloops strain are found here.

StateYear of earliest observationYear of last observationTotal HUCs with observations†HUCs with observations†
California195020002Antelope-Fremont Valleys; Sacramento Headwaters
Colorado195119512Colorado Headwaters; Lower Gunnison
Idaho1941201265American Falls; Bear Lake; Beaver-Camas; Big Lost; Big Wood; Blackfoot; Boise-Mores; Brownlee Reservoir; C.J. Strike Reservoir; Camas; Clearwater; Coeur d'Alene Lake; Curlew Valley; Goose; Hells Canyon; Idaho Falls; Lake Walcott; Lemhi; Little Lost; Little Salmon; Little Wood; Lochsa; Lower Bear-Malad; Lower Boise; Lower Clark Fork; Lower Henrys; Lower Kootenai; Lower Middle Fork Salmon; Lower North Fork Clearwater; Lower Salmon; Lower Selway; Middle Bear; Middle Fork Payette; Middle Kootenai; Middle Salmon-Chamberlain; Middle Salmon-Panther; Middle Snake-Succor; Moyie; North and Middle Forks Boise; North Fork Payette; Pahsimeroi; Payette; Pend Oreille; Pend Oreille Lake; Portneuf; Priest; Raft; Salmon Falls; South Fork Boise; South Fork Clearwater; South Fork Coeur d'Alene; South Fork Payette; South Fork Salmon; St. Joe; Teton; Upper Coeur d'Alene; Upper Henrys; Upper Middle Fork Salmon; Upper North Fork Clearwater; Upper Owyhee; Upper Salmon; Upper Snake-Rock; Upper Spokane; Weiser; Willow
Minnesota196919691Otter Tail
Nevada195619622Pyramid-Winnemucca Lakes; Walker Lake
Oregon197319992Brownlee Reservoir; Pacific Northwest Region
Utah195919591Bear Lake

Table last updated 10/4/2018

† Populations may not be currently present.

Other Resources:
FishBase Summary

Revision Date: 1/1/1900

Peer Review Date: 4/1/2016

Citation Information:
U.S. Geological Survey, 2018, Oncorhynchus mykiss kamloops strain: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/factsheet.aspx?SpeciesID=913, Revision Date: 1/1/1900, Peer Review Date: 4/1/2016, Access Date: 12/13/2018

This information is preliminary or provisional and is subject to revision. It is being provided to meet the need for timely best science. The information has not received final approval by the U.S. Geological Survey (USGS) and is 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 information.

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URL: https://nas.er.usgs.gov
Page Contact Information: Pam Fuller - NAS Program (pfuller@usgs.gov)
Page Last Modified: Wednesday, October 24, 2018


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. [2018]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [12/13/2018].

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 Pam Fuller. For queries involving invertebrates, contact Amy Benson.