Pacifastacus leniusculus
Pacifastacus leniusculus
(Signal Crayfish)
Crustaceans-Crayfish
Native Transplant
Collection Info
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Species Profile
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14 results for Pacifastacus leniusculus (Signal Crayfish)
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Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
619854 CAEl DoradoLake Tahoe1895 16050101 Lake Tahoeestablished
260636 CAEl DoradoLake Tahoe1916 16050101 Lake Tahoeestablished
1695171 CAFresnoBig Creek, Sierra National Forest2019 18030010 Upper Kingestablished
1754358 CAMendocinoRussian River, 5 mi N Cloverdale, along Rt. 1011989 18010110 Russian 
4221 CANevadaDonner Lake1962 16050102 Truckeeestablished
4220 CANevadaIndependence Lake1962 16050102 Truckeeestablished
1710745 CASierraSagehen Creek, Upstream from Stampede Reservoir1998 16050102 Truckeeestablished
1715799 MNDouglasLake Winona2023 07010108 Long Prairiefailed
1724877 MTGallatinEast Gallatin River, Montana, USA2018 10020008 Gallatinestablished
1754349 NVElkoOwyhee River, 18.6 mi SE Owyhee, near confluence with North Wild Horse Creek2017 17050104 Upper Owyhee 
1754351 NVEurekaHumboldt River, Dunphy, Exit 254 off I-801995 16040105 Middle Humboldt 
1428749 ORKlamathCrater Lake1914 18010201 Williamsonestablished
1753465 WAGrays HarborSatsop River, 4 mi NW Satsop1982 17100104 Lower Chehalis 
1754356 WAKingLake Washington1999 17110012 Lake Washington 

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. [2025]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [5/16/2025].

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