Updated 5 p.m. Monday  Click here to see an interactive map for evacuation zones out of Fort Bend County. Earlier today, Sienna Plantation and Pecan Grove were added to the list of mandatory evacuations. Mandatory and voluntary evacuations are underway throughout portions of Fort Bend County as the Brazos River continues to rise. The Fort Bend County Office of Emergency Management has provided this interactive map with information on what levee districts and neighborhoods are affected. A voluntary evacuation means that you should consider leaving to head for a safer area, according to the city of Sugar Land. There is a chance that surrounding flood waters may hinder the ability to leave the neighborhood, according to the city. A mandatory evacuation means that there is immanent risk to life and safety as well as property. There is also a risk to the lives of first responders who might be called on for rescues when the expected danger materializes. During a mandatory evacuation emergency, personnel will not be able to respond to calls for help, according to the city.       For a list of road closures throughout the county, click here.