Crayfishes of Georgia Overview List of Georgia Species Species Lists by Drainage Crayfish Identification Keys by Drainage Ecology and Life History Links and Other Useful Information Glossary
A dichotomous key is a chronological series of paired statements (couplets) designed to assist with identification of the group under study.  The keys on this site are intended for live, adult individuals and include color characteristics; in most cases, the keys work for males and females.  If specimens need to be preserved, take several photos prior to preserving the animal since colors will fade quickly in alcohol. You will occasionally have to examine the reproductive structures of males and/or females and a hand lens will usually be sufficient for this.  Small individuals will be difficult to impossible to identify regardless of where there are found.  The keys for drainages above the Fall Line are in pretty good shape.  Things get more complicated in the Coastal Plain and caution should be used for animals caught there.  The Savannah River key especially needs some testing and editing.  Please feel free to contact me with any mistakes you find or questions you might have.

ga drainages

Major drainage systems and physiography of Georgia. Click on the links below for dichotomous keys by drainage.

1. Tennessee2. Conasauga3. Hiwassee4. Little Tennessee;
5. Chattooga/Little6. Coosa/Oostanaula7. Coosawattee
8. Tallapoosa; 9. Etowah10. Broad; 11. Savannah;
12. Chattahoochee; 13. Flint; 14. Ocmulgee; 15. Oconee; 
16. Ohoopee; 17. Ogeechee; 18. Ochlockonee19. Aucilla
20. Suwannee; 21. St. Mary’s; 22. Satilla; 23. Altamaha; 
24. Canoochee; 25. Newport

A-Z Sitewide Index
About the site
Georgia College • 231 W. Hancock St. • Milledgeville, GA 31061 • 1-800-342-0471 ; 478-445-5004 •