(Bloomberg) -- Insurance executives meet with government officials in Paris Monday to assess the cost of flooding in the Centre and Ile-de-France regions as the Seine river recedes from its highest levels in more than three decades.

The river flowing through the French capital was 5.5 meters (18 feet) above its normal level at 6 p.m. Sunday after reaching at 6.10 meters at 2 a.m. on Saturday, according to Vigicrues, the French floods watchdog. Last week the Seine was near to the 6.18-meter mark reached in 1982, according to data from the Environment & Energy Ministry.

“We have to be cautious but the cost may be much higher” than the 1 billion euros ($1.1 billion) reported by French media Sunday, Juliette Meadel, the minister overseeing relief for victims, said late Sunday on France 3 television. “We want to meet with them to have a response that fits the gravity of the situation.”