| Specimen ID | Date | Species | New Area | Alert Risk Map
The Nonindigenous Aquatic Species Alert Risk Mapper (ARM), was developed to characterize the waterbodies at potential risk of invasion from a new nonindigenous species sighting. The ARM tool is a short-term risk assessment utilizing a nonindigenous species' current extents and development of credible scenarios of its potential movement within a drainage based on its mobility and drainage barriers (dams). Maps from ARM will indicate lakes, river reaches, and other waterbodies that are at potential risk of invasion from a new nonindigenous species sighting and will accompany the NAS Alert emails sent out to subscribers and managers.
| Comments |
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1877134
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5/16/2025
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Silver Carp
Hypophthalmichthys molitrix
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County: Kankakee (IL)
Drainage: Kankakee (07120001)
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1876617
|
5/12/2025
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Oscar
Astronotus ocellatus
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County: Chatham (GA)
Drainage: Ogeechee Coastal (03060204)
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1873947
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5/8/2025
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tropical seagrass
Halophila stipulacea
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State: FL
County: Miami-Dade (FL)
Drainage: Florida Southeast Coast (03090206)
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1873892
|
5/2/2025
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Rusty Crayfish
Faxonius rusticus
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County: Larimer (CO)
Drainage: Big Thompson (10190006)
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1873873
|
5/2/2025
|
white pulse coral
Xenia umbellata
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Country: US
State: PR
County: Salinas (PR)
Drainage: Southern Puerto Rico (21010004)
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1873889
|
5/2/2025
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White River crawfish
Procambarus acutus
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County: Bucks (PA)
Drainage: Schuylkill (02040203)
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1873872
|
5/2/2025
|
giant applesnail
Pomacea maculata
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County: Iberia (LA)
Drainage: Bayou Teche (08080102)
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1873882
|
5/2/2025
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Latissimia ningalooensis
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Country: US
State: PR
County: Ponce (PR)
Drainage: Southern Puerto Rico (21010004)
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1872950
|
4/25/2025
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Blue Catfish
Ictalurus furcatus
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County: Bucks (PA)
Drainage: Middle Delaware-Musconetcong (02040105)
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1872889
|
4/22/2025
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zebra mussel
Dreissena polymorpha
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County: Tom Green (TX)
Drainage: South Concho (12090102)
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1863569
|
4/3/2025
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freshwater golden clam
Corbicula fluminea
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County: Navajo (AZ)
Drainage: Middle Little Colorado (15020008)
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1863546
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3/27/2025
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shortstemmed eelgrass
Vallisneria × pseudorosulata
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State: MS
County: Prentiss (MS)
Drainage: Upper Tombigbee (03160101)
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1758464
|
3/25/2025
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quagga mussel
Dreissena bugensis
|
County: Walworth (WI)
Drainage: Upper Fox (07120006)
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| *Bonus* This is the first occurrence of this species in the county and HUC. |
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1863475
|
3/25/2025
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Japanese mysterysnail
Cipangopaludina japonica
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County: Delaware (PA)
Drainage: Schuylkill (02040203)
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1863501
|
3/25/2025
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mysterysnail
Cipangopaludina sp.
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County: Franklin (OH)
Drainage: Upper Scioto (05060001)
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1758479
|
3/14/2025
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Silver Carp
Hypophthalmichthys molitrix
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County: Russell (KY)
Drainage: Upper Cumberland-Lake Cumberland (05130103)
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1753371
|
2/28/2025
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Pond Loach
Misgurnus anguillicaudatus
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County: Greene (GA)
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1757647
|
2/18/2025
|
prickly water lily
Euryale ferox
|
Country: US
State: MN
County: Ramsey (MN)
Drainage: Twin Cities (07010206)
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1753357
|
1/14/2025
|
axe-head mussel
Xenostrobus securis
|
Country: US
State: CA
County: Los Angeles (CA)
Drainage: San Gabriel (18070106)
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1753134
|
1/3/2025
|
nutria
Myocastor coypus
|
State: MS
Drainage: Mississippi Coastal (03170009)
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| *Bonus* First record from barrier islands/National Seashore in Mississippi |
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1740356
|
1/2/2025
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West Indian marsh grass
Hymenachne amplexicaulis
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State: SC
County: Charleston (SC)
Drainage: Edisto River (03050206)
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1740412
|
12/30/2024
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Indo-Pacific swimming crab
Charybdis hellerii
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Drainage: Salkehatchie (03050207)
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1740346
|
12/20/2024
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Rusty Crayfish
Faxonius rusticus
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County: Mahaska (IA)
Drainage: South Skunk (07080105)
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1740332
|
12/20/2024
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magnificent bryozoan
Pectinatella magnifica
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County: Tulare (CA)
Drainage: Upper Kaweah (18030007)
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1740345
|
12/20/2024
|
zebra mussel
Dreissena polymorpha
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County: Marion (IA)
Drainage: Lake Red Rock (07100008)
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