Indiana Gov. Mike Braun declared a statewide disaster emergency Thursday and mobilized the National Guard as catastrophic flooding swamped towns across the state for a sixth consecutive day, killing at least three people and forcing dozens of dramatic water rescues.

The trigger was rain that meteorologists described as a "once-in-1,000-year" event, dumping rates of 1 to 2 inches per hour on already-saturated ground. In Cambridge City, a town of roughly 1,700 people, floodwaters submerged a seven- or eight-block stretch of the community, and rescuers pulled dozens of stranded residents out by boat. More than 50 people were evacuated from a flooded apartment complex in nearby Henry County.

"Hoosiers' safety is my top priority. Our state response is fully mobilized," Braun said in announcing the emergency declaration, which frees up state resources and clears the way for expanded National Guard deployment to the hardest-hit counties.

A River That Wouldn't Stop Rising

Search crews pulled three people from the Mississinewa River on Wednesday and were still searching Thursday for one person reported missing. Henry County Sheriff John Sproles warned that the ground has nowhere left to absorb more water. "Any more rain is really going to put us into much more significant problems," he said.

"IT'S PRETTY DEVASTATING FOR A TOWN OF 1,700 PEOPLE."

That's how Cambridge City Council President Jim McLane described the scene, as floodwater climbed high enough that one resident said she watched her own fence "floating past my window" before being pulled out by rescue boat.

The flooding is the latest and most severe chapter in a storm system that has battered the Ohio Valley since the weekend, with the National Weather Service logging 277 separate flash-flood reports across the region since Monday. Illinois and Ohio have also seen significant flooding, and forecasters warned Thursday that another round of storms carrying damaging winds, large hail and the risk of tornadoes was bearing down on the same waterlogged ground.

Braun's declaration puts the state in line for federal disaster assistance requests and directs state agencies to prioritize flood response, though officials cautioned the water is expected to keep rising in some low-lying areas even after the rain stops. Local officials continue to urge residents in flood-prone areas to evacuate ahead of forecast storms rather than wait for water to reach their homes.

The disaster comes just two days after storms elsewhere in the Midwest killed at least three people and knocked out power to hundreds of thousands of households, part of an unusually punishing stretch of summer weather across the region. With more rain in the forecast through the weekend, Indiana emergency officials said Thursday they do not expect the crisis to peak before conditions stabilize early next week.