DistributionRead full entry
Graptemys geographica inhabits the Mississippi-Missouri-Ohio-Tennessee system, the Great Lakes system, and the Susquehanna, Delaware and Hudson systems. A record from eastern Massachusetts needs confirmation (Iverson 1992). There are three known localities in Oklahoma, two recent and the other historic (in a river reach that is now a reservoir) (Lindeman pers. comm. 2010).