NAS Alert System



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Total of 2236 alerts match your criteria. Click on the dipnet View Specimen details to get details about the collection.
  DateSpeciesNew AreaAlert Risk Map Comments
View Specimen details 7/19/2018 giant salvinia
Salvinia molesta
Drainage: Liberty Bayou-Tchefuncta (8090201)
View Specimen details 7/19/2018 floating primrose-willow
Ludwigia peploides
County: Santa Clara (CA)
Drainage: Coyote (18050003)
View Specimen details 7/17/2018 water spangles
Salvinia minima
State: MO
County: Jackson (MO)
Drainage: Lower Missouri-Crooked (10300101)
View Specimen details 7/17/2018 Asian clam
Corbicula fluminea
County: Litchfield (CT)
Drainage: Housatonic (1100005)
View Specimen details 7/16/2018 magnificent bryozoan
Pectinatella magnifica
County: Chippewa (WI)
Drainage: Lower Chippewa (7050005)
View Specimen details 7/13/2018 New Zealand mudsnail
Potamopyrgus antipodarum
State: NJ
County: Warren (NJ)
Drainage: Middle Delaware-Musconetcong (2040105)
View Specimen details 7/12/2018 Red-eared Slider
Trachemys scripta
County: Clinton (IN)
Drainage: Wildcat (5120107)
View Specimen details 7/6/2018 Red Swamp Crayfish
Procambarus clarkii
County: Coffee (GA)
Drainage: Satilla (3070201)
View Specimen details 7/5/2018 water chestnut
Trapa natans
County: Richmond (NY)
*Bonus* View Specimen details 7/5/2018 Oscar
Astronotus ocellatus
County: Bexar (TX)
Drainage: Upper San Antonio (12100301)
Not seen in area since 1981
View Specimen details 7/3/2018 American Bullfrog
Lithobates catesbeianus
County: King (WA)
Drainage: Lake Washington (17110012)
View Specimen details 7/3/2018 zebra mussel
Dreissena polymorpha
Drainage: Manistique (4060106)
View Specimen details 7/3/2018 magnificent bryozoan
Pectinatella magnifica
County: Nevada (CA)
Drainage: Upper Bear (18020126)
View Specimen details 7/2/2018 Spiny Softshell
Apalone spinifera
County: Middlesex (MA)
Drainage: Concord (1070005)
*Bonus* View Specimen details 7/2/2018 giant salvinia
Salvinia molesta
State: MS
Drainage: Middle Pearl-Strong (3180002)
Not seen at Ross Barnett Reservoir since 2012.
View Specimen details 6/29/2018 zebra mussel
Dreissena polymorpha
Drainage: Denton (12030104)
View Specimen details 6/27/2018 parrot feather
Myriophyllum aquaticum
County: Athens (OH)
Drainage: Hocking (5030204)
View Specimen details 6/26/2018 giant salvinia
Salvinia molesta
County: Escambia (FL)
Drainage: Pensacola Bay (3140105)
View Specimen details 6/26/2018 sacred lotus
Nelumbo nucifera
County: Currituck (NC)
Drainage: Albemarle (3010205)
View Specimen details 6/22/2018 red-rim melania
Melanoides tuberculatus
County: Mohave (AZ)
Drainage: Havasu-Mohave Lakes (15030101)
View Specimen details 6/20/2018 Chinese mysterysnail
Cipangopaludina chinensis
Drainage: Mississippi Headwaters (7010101)
View Specimen details 6/18/2018 Chinese mysterysnail
Cipangopaludina chinensis
State: SC
County: Lexington (SC)
Drainage: Saluda (3050109)
View Specimen details 6/18/2018 Ginbuna
Carassius langsdorfii
Country: US
State: CA
County: Placer/El Dorado (CA)
Drainage: Lake Tahoe (16050101)
View Specimen details 6/18/2018 yellow floating-heart
Nymphoides peltata
County: Crawford (PA)
Drainage: French (5010004)
View Specimen details 6/18/2018 Bighead Carp
Hypophthalmichthys nobilis
County: Taney (MO)
Drainage: Bull Shoals Lake (11010003)

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Page Contact Information: Pam Fuller - NAS Program (
Page Last Modified: Monday, July 09, 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 [7/22/2018].

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