NAS Alert System



The 10 most recent alerts are available at RSS

Total of 2360 alerts match your criteria. Click on each Specimen ID to get details about the collection.
Specimen IDDateSpeciesNew AreaAlert Risk Map Comments
1523935 12/4/2018 alligatorweed
Alternanthera philoxeroides
County: Hopkins (TX)
1523963 12/4/2018 crested floating-heart
Nymphoides cristata
County: Henderson (TX)
Drainage: Upper Neches (12020001)
1464312 12/4/2018 curly-leaf pondweed
Potamogeton crispus
County: Tripp (SD)
Drainage: Ponca (10150001)
1523926 12/3/2018 European frogbit
Hydrocharis morsus-ranae
Drainage: Rondout (2020007)
1523929 12/3/2018 European frogbit
Hydrocharis morsus-ranae
County: Orange (NY)
1523921 11/30/2018 Silver Carp
Hypophthalmichthys molitrix
County: Black Hawk (IA)
Drainage: Middle Cedar (7080205)
1522668 11/29/2018 Eastern Newt
Notophthalmus viridescens
Country: US
State: WA
County: Whatcom (WA)
Drainage: Nooksack (17110004)
*Bonus* First non-native occurrence in the country.
1523014 11/26/2018 Moorish Idol
Zanclus cornutus
County: Miami-Dade (FL)
1522990 11/21/2018 freshwater jellyfish
Craspedacusta sowerbyi
Drainage: Seneca (3060101)
1523007 11/21/2018 Red Swamp Crayfish
Procambarus clarkii
State: TX
County: Lubbock (TX)
Drainage: Yellow House Draw (12050001)
1522815 11/19/2018 Chinese mysterysnail
Cipangopaludina chinensis
Drainage: Upper Delaware (2040101)
1522757 11/15/2018 Red Swamp Crayfish
Procambarus clarkii
State: DE
County: New Castle (DE)
Drainage: Brandywine-Christina (2040205)
1522666 11/14/2018 crested floating-heart
Nymphoides cristata
Drainage: Everglades (3090202)
1522670 11/14/2018 southern cattail
Typha domingensis
State: ID
County: Bannock (ID)
Drainage: Portneuf (17040208)
1522669 11/14/2018 Chinese mysterysnail
Cipangopaludina chinensis
County: Bonner (ID)
Drainage: Pend Oreille Lake (17010214)
1522622 11/14/2018 giant rams-horn snail
Marisa cornuarietis
Drainage: Everglades (3090202)
1522661 11/9/2018 southern cattail
Typha domingensis
County: Fulton (IL)
Drainage: Spoon (7130005)
1522662 11/9/2018 southern cattail
Typha domingensis
County: Logan (IL)
1522660 11/9/2018 southern cattail
Typha domingensis
County: Bureau (IL)
Drainage: Lower Illinois-Senachwine Lake (7130001)
1522650 11/9/2018 southern cattail
Typha domingensis
County: La Salle (IL)
1522659 11/9/2018 southern cattail
Typha domingensis
County: Peoria (IL)
Drainage: Lower Illinois-Lake Chautauqua (7130003)
1522624 11/9/2018 Eurasian watermilfoil
Myriophyllum spicatum
County: Knox (IN)
1522540 11/6/2018 New Zealand mudsnail
Potamopyrgus antipodarum
County: Lincoln (WY)
Drainage: Salt (17040105)
1522589 11/2/2018 Fathead Minnow
Pimephales promelas
State: AK
County: Kenai Peninsula (AK)
Drainage: Upper Kenai Peninsula (19020302)
1522590 11/2/2018 giant salvinia
Salvinia molesta
County: Sumter (AL)
Drainage: Middle Tombigbee-Lubbub (3160106)

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Take Pride in America logoU.S. Department of the Interior | U.S. Geological Survey
Page Contact Information: Pam Fuller - NAS Program (
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 [12/9/2018].

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.