Friends and family hope they can use the anniversary to help bring closure for the Bobo family.
Volunteers will meet at Highland Park Church in west Nashville Saturday morning at 6 a.m.
"[We'll have] multiple dog teams, UAW search and rescue, blood hound search and rescue, six, seven dogs, they're bringing in sonar equipment that's coming down from Michigan and there are going to be volunteers, probably as many as 40, 50, 60 volunteers leaving out from Nashville to go to the search site," Pastor Dale Robble explained.
Bobo disappeared 17 months ago from her home in rural Decatur County.
Now 21, she is five foot, three inches tall and weighs 110 pounds.
She has blue eyes and shoulder-length blonde hair and was last seen wearing a pink shirt, blue jeans and black flip flops.
A $250,000 reward is being offered for Bobo's safe return.
Anyone with information regarding her whereabouts is urged to contact the TBI at 1-800-TBI-FIND.