Specimen ID Date Species New Area Alert Risk Map
NAS ARM info here
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
1877134
5/16/2025
Silver CarpHypophthalmichthys molitrix
County: Kankakee (IL) Drainage: Kankakee (07120001)
1876617
5/12/2025
OscarAstronotus ocellatus
County: Chatham (GA) Drainage: Ogeechee Coastal (03060204)
1873947
5/8/2025
tropical seagrassHalophila stipulacea
State: FL County: Miami-Dade (FL) Drainage: Florida Southeast Coast (03090206)
1873892
5/2/2025
Rusty CrayfishFaxonius rusticus
County: Larimer (CO) Drainage: Big Thompson (10190006)
1873873
5/2/2025
white pulse coralXenia umbellata
Country: US State: PR County: Salinas (PR) Drainage: Southern Puerto Rico (21010004)
1873889
5/2/2025
White River crawfishProcambarus acutus
County: Bucks (PA) Drainage: Schuylkill (02040203)
1873872
5/2/2025
giant applesnailPomacea maculata
County: Iberia (LA) Drainage: Bayou Teche (08080102)
1873882
5/2/2025
Latissimia ningalooensis
Country: US State: PR County: Ponce (PR) Drainage: Southern Puerto Rico (21010004)
1872950
4/25/2025
Blue CatfishIctalurus furcatus
County: Bucks (PA) Drainage: Middle Delaware-Musconetcong (02040105)
1872889
4/22/2025
zebra musselDreissena polymorpha
County: Tom Green (TX) Drainage: South Concho (12090102)
1863569
4/3/2025
freshwater golden clamCorbicula fluminea
County: Navajo (AZ) Drainage: Middle Little Colorado (15020008)
1863546
3/27/2025
shortstemmed eelgrassVallisneria × pseudorosulata
State: MS County: Prentiss (MS) Drainage: Upper Tombigbee (03160101)
1758464
3/25/2025
quagga musselDreissena bugensis
County: Walworth (WI) Drainage: Upper Fox (07120006)
*Bonus* This is the first occurrence of this species in the county and HUC.
1863475
3/25/2025
Japanese mysterysnailCipangopaludina japonica
County: Delaware (PA) Drainage: Schuylkill (02040203)
1863501
3/25/2025
mysterysnailCipangopaludina sp.
County: Franklin (OH) Drainage: Upper Scioto (05060001)
1758479
3/14/2025
Silver CarpHypophthalmichthys molitrix
County: Russell (KY) Drainage: Upper Cumberland-Lake Cumberland (05130103)
1753371
2/28/2025
Pond LoachMisgurnus anguillicaudatus
County: Greene (GA)
1757647
2/18/2025
prickly water lilyEuryale ferox
Country: US State: MN County: Ramsey (MN) Drainage: Twin Cities (07010206)
1753357
1/14/2025
axe-head musselXenostrobus securis
Country: US State: CA County: Los Angeles (CA) Drainage: San Gabriel (18070106)
1753134
1/3/2025
nutriaMyocastor coypus
State: MS Drainage: Mississippi Coastal (03170009)
*Bonus* First record from barrier islands/National Seashore in Mississippi
1740356
1/2/2025
West Indian marsh grassHymenachne amplexicaulis
State: SC County: Charleston (SC) Drainage: Edisto River (03050206)
1740412
12/30/2024
Indo-Pacific swimming crabCharybdis hellerii
Drainage: Salkehatchie (03050207)
1740346
12/20/2024
Rusty CrayfishFaxonius rusticus
County: Mahaska (IA) Drainage: South Skunk (07080105)
1740332
12/20/2024
magnificent bryozoanPectinatella magnifica
County: Tulare (CA) Drainage: Upper Kaweah (18030007)
1740345
12/20/2024
zebra musselDreissena polymorpha
County: Marion (IA) Drainage: Lake Red Rock (07100008)