Alligator mississippiensis
Alligator mississippiensis
(American alligator)
Reptiles-Crocodilians
Native Transplant
Collection Info
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11 results for Alligator mississippiensis (American alligator)
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Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
1711821 CASacramentoAmerican River at Sailor Bar2023 18020111 Lower Americanfailed
1887394 NYKings[No locality description provided]2023 02030104 Sandy Hook-Staten Island 
1710669 NYKingsProspect Park Lake, Brooklyn2023 02030104 Sandy Hook-Staten Islandfailed
1712977 OHAuglaizeSt. Mary's River in Auglaize County.2023 04100004 St. Marysunknown
1724120 PAAlleghenyNear Blackberry Street and U.S. Steel mill.2023 05020005 Lower Monongahelaunknown
1724122 PAArmstrongBrownstone Road, Apollo, PA2023 05010008 Kiskiminetasfailed
1724121 PAArmstrongKiskiminetas River, Kiskiminetas Township2023 05010008 Kiskiminetasunknown
1724119 PAArmstrongKiskiminetas River, Kiskiminetas Township2023 05010008 Kiskiminetasfailed
1714010 PABerksAntietam Creek, near North Prospect Street and Butter Lane2023 02040203 Schuylkill 
1711985 PALehighKline's Island Wastewater Treatment Plant, Lehigh River2023 02040106 Lehighfailed
1715824 WIMilwaukeeGrant Park Beach2023 04190000 Lake Michiganfailed

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.

Disclaimer:

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 [2/21/2026].

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