More than 30,000 people are believed to be in official shelters including nearly 10,000 in Houston's convention center

Major roads and junctions reportedly affected by flooding or high water

George Bush Park

Houston

George R Brown

convention center

Space Center

20 km

20 miles

Interstate 45

Interstate 69

Major roads and junctions reportedly affected by flooding or high water

George Bush Park

Interstate 10

Houston

Arboretum

George R Brown

convention center

Trinity Bay

Space Center

Interstate 69

Interstate 45

20 km

20 miles