There are four options for searching watersheds.
Enter your 5 digit U.S. postal code to find your watershed. For example 30008, 33912, etc.
Click any spot on the
to load watershed.
browse all watersheds.
Or - Search by watershed name.
Contact & Feedback
Fixed an issue preventing users from submitting records. Sorry for the inconvience! Please try again.
Added iNaturalist.org collection data to species maps.
User submissions are now online! You can submit your own observations using our new system.
Added 2016 collection data from Brian Zimmerman
Added Mexican data set from Dr. John Lyons
Robots have finally defeated me. Adding reCAPTCHA to the contact form. Goodbye spam.
Data provided by
Database built from NatureServe's
Digital Distribution Maps of the Freshwater Fishes of the Conterminous United States, Version 3.0.
Nonindigenous data provided by
USGS Nonidigenous Aquatic Species
NAS Web Services API
Collection occurence data provided by