According to police, a resident of Karimnagar, Rajitha alias Neha along with son Mohammad Ayan (7), Ashraja Ben (5) and Usman Ahmed ( 14 months) jumped into the reservoir two days ago. The bodies surfaced in the water on Friday morning.
Local people, who found the bodies, informed the police.
A native of Rudravaram of Vemulawada rural mandal, Rajitha had a love marriage with Mohammad Ali from Karimnagar.
The couple reportedly had frequent quarrels, police said, adding that further investigation was on.