NAS Alert System



The 10 most recent alerts are available at RSS

Total of 2914 alerts match your criteria. Click on each Specimen ID to get details about the collection.
Specimen IDDateSpeciesNew AreaAlert Risk Map Comments
1687221 1/12/2022 Chinese mysterysnail
Cipangopaludina chinensis
County: Juab (UT)
Drainage: Southern Great Salt Lake Desert (16020306)
1687222 1/12/2022 Chinese mysterysnail
Cipangopaludina chinensis
County: Davis (UT)
Drainage: Lower Weber (16020102)
1687200 1/5/2022 Red Swamp Crayfish
Procambarus clarkii
County: Montgomery (PA)
1680180 12/15/2021 giant applesnail
Pomacea maculata
Drainage: East Fork San Jacinto (12040103)
1680173 12/14/2021 didymo
Didymosphenia geminata
State: OR
County: Linn (OR)
Drainage: Mckenzie (17090004)
1680177 12/14/2021 common water-hyacinth
Eichhornia crassipes
County: Johnson (KS)
Drainage: Lower Missouri-Crooked (10300101)
1680170 12/13/2021 giant applesnail
Pomacea maculata
County: Austin (TX)
1680130 12/10/2021 Cuban bulrush
Cyperus blepharoleptos
County: Pike (MS)
Drainage: Tangipahoa (08070205)
1680127 12/10/2021 torpedo grass
Panicum repens
County: Covington (MS)
Drainage: Upper Leaf (03170004)
1680133 12/10/2021 common water-hyacinth
Eichhornia crassipes
County: Greene (GA)
1680121 12/10/2021 giant salvinia
Salvinia molesta
County: Covington (MS)
1680071 12/3/2021 Rusty Crayfish
Faxonius rusticus
Drainage: Snake (07030004)
1680066 11/30/2021 monoecious hydrilla
Hydrilla verticillata [monoecious]
County: Raleigh (WV)
Drainage: Lower New (05050004)
1679324 11/30/2021 Redbelly Tilapia
Tilapia zillii
Drainage: Aqua Fria (15070102)
1679659 11/30/2021 Chinese mysterysnail
Cipangopaludina chinensis
County: Linn (IA)
Drainage: Upper Wapsipinicon (07080102)
1679030 11/30/2021 Northern Pike
Esox lucius
County: Caledonia (VT)
Drainage: Passumpsic (01080102)
1679002 11/30/2021 Koi
Cyprinus rubrofuscus
County: Vernon (LA)
Drainage: Whisky Chitto (08080204)
1677197 11/30/2021 Blue Tilapia
Oreochromis aureus
Drainage: Las Vegas Wash (15010015)
1679881 11/30/2021 Nile Tilapia
Oreochromis niloticus
State: UT
County: Tooele (UT)
Drainage: Southern Great Salt Lake Desert (16020306)
1670540 11/23/2021 yellow floating-heart
Nymphoides peltata
County: Carroll (MD)
Drainage: Gunpowder-Patapsco (02060003)
1670538 11/23/2021 Australian water-clover
Marsilea mutica
County: Carroll (MD)
Drainage: Gunpowder-Patapsco (02060003)
1670522 11/23/2021 featherfoil
Hottonia palustris
State: NH
County: Belknap (NH)
Drainage: Winnipesaukee River (01070002)
1670537 11/23/2021 parrot feather
Myriophyllum aquaticum
County: Carroll (MD)
1670536 11/23/2021 Brazilian waterweed
Egeria densa
County: Carroll (MD)
Drainage: Gunpowder-Patapsco (02060003)
1670535 11/23/2021 waterpoppy
Hydrocleys nymphoides
County: Travis (TX)
Drainage: Austin-Travis Lakes (12090205)


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. [2022]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [1/21/2022].

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.