Flood threat loomed large over Patna district Saturday after the Madhya Pradesh government released 3.55 lakh cusecs of water from Bansagar dam in Sone river that would increase the Ganga water level which is already flowing above the danger mark in Patna.

"Due to heavy rains, Bansagar dam is completely full to its capacity. Our Water Resources Department's Principal Secretary talked to the concerned officials of Madhya Pradesh government over phone requesting them to release the water from Bansagar dam slowly into the river Sone so that Ganga does not witness sudden surge in its water level," WRD Public Relations Officer Arvind Kumar Singh said.