EXPERTS PLZ! Common snapping turtle help please read i'm getting scared?

I've had my common snapper for almost 5 years since it was a hatchling and this summer i decided to bring her outside because it is beautiful...i put her temporarily in a toy chest that was pretty long and the walls were pretty high(probably a foot and a half high)...so i go off to a 4th of july party and i come back the next day and she's gone...its the 7th today and still no luck =( i feel so irresponsible i should have put her back in her tank inside....its been the hottest few days and i'm worried that she's stuck in a bush or is just too scared to go look for water....since there are creepers on the internet i'll give the address of someone around me(can someone look into google earth or map quest or whatever and see the water masses they think she might have gone to!!!!) PLEASE!!!!!!!! 28 south harrison avenue, congers ny 10920..........i also would like to know if snapping turtles have a sense of smell towards water or how long they can stay out of water for...any help or input is appreciated!!!! THANKS