top of page
Newsletters
Am I allowed to use the login credentials of
another person to access the database?
Alligatorweed
(Alternanthera philoxeroides)
Found an invasive species? Register for a free login account, or submit a public report.
Allegheny Crayfish
Photo credit: © Aleta Karstad/Flickr
(Orconectes obscurus)
Report this Species!
If you believe you have found this species in its invasive range in Pennsylvania, please report your findings to iMapInvasives by submitting an observation record.
-
Already a registered user? Login to submit your observation.
-
Not a registered user? Submit a public report.
-
Watch our training video to learn how to submit an observation record (as a registered user).
Species at a Glance
Learn more about the Allegheny crayfish and its impacts by viewing information available from USGS NAS.
Range Information
The map below depicts both the native and invasive ranges of Allegheny crayfish in Pennsylvania, displayed using a HUC 8 watershed layer.
Data used to create this map was provided by:
Native range
Invasive range
bottom of page