The mishap occurred when the victims were returning to their native Nagoigadh-Durgapur village in Ramanujganj late last evening after offering prayers at a temple in Devipur village under Surajpur police station limits, station house officer MR Nikunj said.
As the vehicle reached near the pond, the driver lost control over it following which the jeep fell into the water body, he said.
Ramcharan (65), his wife Hirmuniya Bai (60) and their granddaughter Sunita (7) died on the spot, he said.
A case has been registered in this connection, the SHO said, adding that further probe was on.