Each map shows the reservoir; the boundary of the reservoir's "government-owned" land, which indicates the boundary between land within the reservoir owned by the U.S. Army Corps of Engineers and the adjoining land that is privately owned; five levels of ground elevations (color-coded) in neighborhoods located on the perimeter of the reservoir – ranging from 44.9 to 107 feet; streets and roadways in and near the reservoir; building footprints; and bayous, creeks and tributaries in and near the reservoir, according to the Office of Homeland Security and Emergency Management.
HCFCD is advising people wait until morning to evacuate if they chose, so as not to have people on the roads in the dark.
VOLUNTARY EVACUATION FOR PORTIONS OF FORT BEND COUNTY WITHIN THE BARKER RESERVOIR pic.twitter.com/cfO7DuZeY1
— Fort Bend County OEM (@fbcoem) August 27, 2017
Engineers with the Army Corps will likely have to release water from the Addicks and Barker reservoirs to reduce the risk of flooding to the Houston-metropolitan area, officials said.
"These structures continue to perform as they were designed to do, which is to protect against flooding in downtown Houston and the Houston Ship Channel," Galveston District commander Col. Lars Zetterstrom said in a release. "However, we do expect to release late this evening into early tomorrow morning.
Zetterstrom said the roads within the Addicks and Barker areas will be flooded and closed for an extended period of time until sufficient quantities of water can be released. Homes upstream will also be affected for an extended period of time while water is released from the reservoirs, a press release stated.
"This flood event will exceed the 2016 tax day flood elevations. Structures will be impacted upstream from both locations; the number of structures affected will depend on weather conditions," Zetterstrom said.
As of Sunday evening, voluntary evacuations were called for residential areas within the Barker Reservoir in Fort Bend County. For more details, click here.