Georgia contains 159 counties, and a vast geology and ecology. For additional information and maps for the state of Georgia you can refer to the following Supplemental Information page.

Georgia contains rivers on its eastern side that drain to the Atlantic Ocean and rivers on the western side that drain to the Gulf of Mexico. Streams and rivers in the extreme northern part of the state drain to the Mississippi River before reaching the Gulf of Mexico. For additional information on the watersheds of Georgia you can refer to the following Watersheds of Georgia page.

There are over 325 species of fish that occur primarily in the freshwaters of Georgia. This list includes 8 federally listed species, 57 state listed species, at least 15 introduced species and 8 endemic species. Approximately one-third of the freshwater fish fauna is considered imperiled and at least 6 species may be extirpated from the state's waters. For more information about the species that occur in Georgia please refer to the Georgia Fish List. For some additional information please see the Georgia Fish Atlas Project page.