Alligator mississippiensis
Alligator mississippiensis
(American alligator)
Native Transplant

14 results for Alligator mississippiensis (American alligator)
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Click here for listing in all states

Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
158946 PAAlleghenyAllegheny River near the dam in Harmarville2004 05010009 Lower Alleghenyfailed
1617865 PAAlleghenyAllegheny River, off of 57th St.2019 05010009 Lower Alleghenyfailed
1547060 PAAlleghenyCarrick neighbourhood, 300 block of East Agnew Ave.2019 05020005 Lower Monongahelafailed
1547059 PAAlleghenyMonongahela River at Southside Riverfront Park2019 05020005 Lower Monongahelafailed
1547058 PAAlleghenyNear Sebring and Rutherford2019 05030101 Upper Ohiofailed
1592661 PAAlleghenyParking lot of Giant Eagle, Shaler Township, PA.2019 05010009 Lower Alleghenyfailed
271846 PAAlleghenyYoughiogheny River, near Boston Bridge2007 05020006 Youghioghenyfailed
1548403 PABlairA creek near Tipton, Antis Township, PA2019 02050302 Upper Juniatafailed
271848 PABucksa pond in Kauffman2005 02070004 Conococheague-Opequonfailed
271847 PACumberlandNewton, near Doublin Gap Road2007 02050305 Lower Susquehanna-Swatarafailed
1467952 PADelawareProspect Park, PA2018 02040202 Lower Delawarefailed
276158 PALehigh1400 block of Schoenersville Road2011 02040106 Lehighfailed
268113 PAMontgomeryPennypack Creek, in Bryn Athyn2007 02040202 Lower Delawarefailed
276157 PANorthamptonMonocacy Creek near Illick's Mill Park2011 02040106 Lehighfailed

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. [2021]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [12/9/2021].

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 Matthew Neilson. For queries involving invertebrates, contact Amy Benson.