We examined habitat selection by the painted turtle (Chrysemys picta marginata) and common map turtle (Graptemys geographica) in the Ottawa National Wildlife Refuge, Ohio, USA. Basking traps caught 198 (162 C. picta and 36 G. geographica) and 140 (106 C. picta, 33 G. geographica, 1 Trachemys scripta elegans) unique individuals in 2003 and 2004, respectively. Radiotransmitters were attached to selected adults of both species. Chrysemys picta were caught in marshes more than in channels in both years. Radiotelemetry results corresponded with trap data; C. picta were located 65.6% and 90% of the time in marshes in 2003 and 2004, respectively. With just four exceptions, G. geographica were captured only in channels in both years. In contrast, radiotelemetry data revealed that G. geographica were located 40.7% and 43.7% of the time in marshes in 2003 and 2004, respectively. Our results showed differences in habitat use for these two species, but different measures of habitat use (basking traps vs. radiotelemetry) provided different insights to behavior.