The National Hurricane Center has said heavy rain from Harvey is forecast to worsen flooding in Southeast Texas and southwestern Louisiana. (Aug. 29)

HOUSTON — Rescue boats, high-water vehicles, kayaks and even jet skis searched flood-swollen streets Tuesday for trapped, desperate residents as relentless Tropical Storm Harvey trudged east toward Louisiana. 

River levels marched higher, swelled by days of relentless rain. A reservoir splashed over its banks, another threatened to overflow, and authorities in Brazoria County, south of Houston, announced a levee breach.

“GET OUT NOW!!” Brazoria County officials urged residents near the Columbia Lakes levee via Twitter.

In a news conference Tuesday evening, Houston Mayor Sylvester Turner imposed a 10 p.m. to 5 a.m. curfew for the city after warning residents about people impersonating law enforcement officers. Turner later announced via Twitter that he was pushing back the start time to midnight, ” … to allow volunteers and others to do their great work.”

As of late Tuesday night, the death toll stood at 18, officials said. federal and local agencies said they’d rescued more than 13,000 people from the flood waters and more shelters would open.

The NRG Center will become the next major shelter and was expected to open by 10 p.m. Houston time, the Houston Chronicle and ABC13 reported. The center will hold up to 10,000 evacuees, according to KHOU.

The National Hurricane Center reported Tuesday night that Harvey was 85 miles south of Port Arthur, Texas, 85 miles south of Cameron, La., and was moving east at 6 mph. 

Earlier Tuesday, President Trump arrived in Texas, meeting with Gov. Greg Abbott…