12:30 p.m. update: The authorities have expanded the ban on using Austin watercourses, including Lake Austin and Lady Bird Lake,…
12:30 p.m. update: The authorities have expanded the ban on using Austin watercourses, including Lake Austin and Lady Bird Lake, until next week, the Austin Fire Department said in a statement Thursday.
Floodwaters released from Mansfield Dam help pull up rising water on Lake Travis, but the release also creates dangerously high flows downstream.
“These conditions have created high and fast water, which in combination with debris has made recreational, commercial and navigational use of all waterways, including all streams in the city
Austin unsafe,” said the Austin Fire Department.
The waterways will remain closed for dinner on Tuesday for commercial and recreation. The use is:
Whole Austin Lake from Mansfield Dam to Tom Miller Dam.
Lady Bird Lake
Colorado River in Austin, located downstream of Longhorn Dam.
All bays in the Austin city area
The authorities warn that any ship illegally operated on these waters under the ban may be spoiled.
1:30 am Update: The Austin-Travis County Emergency Operations Center has been activated as officials monitor potentially severe weather and rising water on the Highland Lakes.
Austin residents should have an emergency plan and supply in difficult weather, says the city.
City officials also recommend monitoring weather and news reports to stay up to date on terms.
Authorities said that an updated interactive map of the roads can be seen at www.ATXFloods.com.
Residents can register for official emergency alerts at WarnCentralTexas.org and get real-time information on the city of Austin’s social media channels and website.
More flood information is available at FloodStatus.LCRA.org and ATXFloodSafety.com
10 am update: The Lower Colorado River Authority says that no further floodgates need to be opened at Mansfield Dam to let water out of a swollen Lake Travis on Thursday.
“It is still possible that we have to open up to four additional floodgates in the next few days,” the agency that manages
LCRA added that it monitored weather forecasts and the water velocity flowing into the Highlands lakes.
“We will inform the public and local authorities immediately if we need to open additional floodgates at Mansfield Dam,” said the agency.
LCRA said Lake Travis was projected to rise between 705 to 710 meters above average sea level on Friday.
“Anyone who can be affected by floods on Highland Lakes and rising levels downstream of Lake Travis should take immediate action to keep themselves and their property safe,” said the agency’s statement.
LCRA said that under normal conditions water released from the Mansfield Dam would take about one day to get to Bastrop, two days to Columbus, four days to Wharton, and at least five days to reach Matagorda, but the flight times would be faster in one flood.
Since Lake Travis’s emissions can cause higher levels in Lake Austin and Lady Bird Lake, these hiking trails and streams in Austin remain closed to the public:
Butler’s hiking and biking trails
Red Bus Isle
All waterways, including Lady Bird Lake and Barton Creek Greenbelt
Colorado River downstream of Longhorn Dam
Previous: Another four floodgates at Lake Travis could be opened at dinner since the reservoir Elevation at Mansfield Dam is expected to rise to 710 meters above average sea level, said the Lower Colorado River Authority.
Lady Bird Lake, downstream from Travis Lake, is expected to rise when water is released from floodgates. The city of Austin, via its ATXflood Twitter account, said that two Austin places along the river could be closed for traffic if floods occur: Cesar Chavez Street at Lamar Boulevard in central Austin and Pleasant Valley Road at Longhorn Dam in eastern Austin.  Since Sunday, several inches of rain have fallen in Hill Country, an area that has already saturated since a milder than normal September. The runoff has flowed into tributaries, especially the swollen Llano River, feeding Highland Lakes along the Colorado River, including Lake Travis.
Floodwaters released from dusts upstream of the Colorado River have caused Lake Travis’s rise to rise to 701 meters above average sea level from Thursday morning, which is 20 meters above what is considered “full” for the reservoir, according to LCRA. The reservoir’s current storage of about 1.57 million hectares of water puts the lake about 39 percent above its capacity.
With Thursday’s possible further release, a total of eight floods will be opened at Mansfield Dam, which marks the most ever for Lake Travis. Floodgates at Mansfield and Tom Miller ponds opened Tuesday begins at noon, with the fourth port at Mansfield opened at 7 pm
Eight floodgates have been opened at Lake Buchanan.
Highland Lakes, which include Lake Buchanan, Inks Lake, Lake LBJ, Lake Marble Falls, Lake Travis and Lake Austin are closed due to hazardous conditions.
Floods and historical flows in the lakes this week give rise to fast high flows in the Highlands Lakes. Someone living in the vicinity should be extremely careful, says LCRA.