Situation Report  
   
 
SummaryLast Update: Sep 18 2014 4:30AM

Intense storms moved through the watershed around the Highland Lakes and the Austin area last night and this morning. Widespread rainfall totals ranged from 1.5 to 2 inches. Localized areas of 3.5 inches were observed on the north side of Lake Travis and in the Pedernales River watershed near Johnson City. The heaviest rain fell in the Lake Austin watershed with totals near 6 inches.

Lake Travis has risen about 0.5 feet and will continue to slowly rise today due to the rains over the Pedernales River.

Floodgate operations at Tom Miller Dam have been required to pass the inflows coming into Lake Austin. Three gates were operated at the peak of the inflow.

Streamflows from Austin area tributaries combined with the releases from Tom Miller Dam have resulted in elevated flows through Lady Bird Lake and in the Colorado River downstream of Austin. For more information about flooding conditions in the Austin area, please visit http://www.atxfloods.com/ or www.atxfloods.com/mobile.html.

Unscheduled releases from the Highland Lakes dams may occur suddenly and unexpectedly due to emergency hydroelectric generation or other reasons. Residents should exercise caution and avoid being in the water near the dams.

 
  Return to top  


  Current Lake Levels at Dams and Gate Operations
*Disclaimer: Data is automatically retrieved and subject to revision.
Lake/DamTimeHead Elevation (Above Dam)Tail Elevation (Below Dam)Gate Operations/Spillway
Buchanan/BuchananSep 18 2014 6:30AM986.55887.16Sep 17 2014 11:37AM No gate operations for flood are expected at this time.
Inks/InksSep 18 2014 6:30AM887.12824.80Sep 17 2014 11:37AM Flow over the spillway is not expected at this time. (Inks Dam has a spillway, but no floodgates.)
LBJ/WirtzSep 18 2014 6:30AM824.61736.80Sep 17 2014 11:37AM No gate operations for flood are expected at this time.
Marble Falls/StarckeSep 18 2014 6:30AM736.27676.40Sep 17 2014 11:37AM No gate operations for flood are expected at this time.
Travis/MansfieldSep 18 2014 6:30AM623.29492.88Sep 18 2014 2:38AM No gate operations for flood are expected at this time.
Austin/MillerSep 18 2014 6:30AM492.35429.03Sep 18 2014 6:24AM No gate operations for flood are expected at this time.
 
  Return to top  


  Lake Levels Over the Last 7 Days
*Disclaimer: Data is automatically retrieved and subject to revision.
Floodgate Operations and Forecasts  
 
Lake Buchanan
Last Update: Sep 17 2014 11:37AM

Inflows: Inflows are below levels that would require flood operations.

Gate Operations: No gate operations for flood are expected at this time.

Lake level forecast (Forecast is subject to change as conditions develop): Please see the River Report for long-range forecasts for Lake Buchanan.
 
 
Inks Lake
Last Update: Sep 17 2014 11:37AM

Inflows: Inflows are below levels that would require flood operations.

Spillway: Flow over the spillway is not expected at this time. (Inks Dam has a spillway, but no floodgates.)

Lake level forecast (Forecast is subject to change as conditions develop): Lake level is expected to remain within its normal operating range.
 
 
Lake LBJ
Last Update: Sep 17 2014 11:37AM

Inflows: Inflows are below levels that would require flood operations.

Gate Operations: No gate operations for flood are expected at this time.

Lake level forecast (Forecast is subject to change as conditions develop): Lake level is expected to remain within its normal operating range.
 
 
Lake Marble Falls
Last Update: Sep 17 2014 11:37AM

Inflows: Inflows are below levels that would require flood operations.

Gate Operations: No gate operations for flood are expected at this time.

Lake level forecast (Forecast is subject to change as conditions develop): Lake level is expected to remain within its normal operating range.
 
 
Lake Travis
Last Update: Sep 18 2014 2:38AM

Inflows: 3 to 3.5 inches have fallen on the north side of Lake Travis. Inflows are below levels that would require flood operations.

Gate Operations: No gate operations for flood are expected at this time.

Lake level forecast (Forecast is subject to change as conditions develop): Please see the River Report for long-range forecasts for Lake Travis.
 
 
Lake Austin
Last Update: Sep 18 2014 6:24AM

Inflows: 4.5 to 6 inches of rain have fallen on Lake Autin and the contributing watershed.

Gate Operations: No gate operations for flood are expected at this time.

Lake level forecast (Forecast is subject to change as conditions develop): Lake level is expected to remain within its normal operating range.
 
 
LCRA does not own or operate Lady Bird Lake and Longhorn Dam. Lake levels are shown for information, but forecasts are not available.  
  Return to top  


  River Levels and Forecasts
 
  River forecasts are provided by the National Weather Service River Forecast Center. Click on the "Forecast" link to view the forecast and other useful information for each location.
 
 
*Disclaimer: Data is automatically retrieved and subject to revision.
Bank Full Stage Flood Stage
Upper Basin LocationBank Full Stage(ft)Flood Stage(ft)Current Stage(ft)Current Flow(cfs)Latest Forecast And More
Colorado River at Winchell24.026.0 1.23 0Forecast
Pecan Bayou near Mullin20.040.0 -0.17 0Forecast
San Saba River at Menard12.018.0 2.52 14Forecast
San Saba River near Brady16.030.0 2.04 10Forecast
San Saba River at San Saba20.024.0 2.48 34Forecast
Colorado River near San Saba25.030.0 1.89 46Forecast
Llano River near Junction12.016.0 2.03 49Forecast
Llano River near Mason6.013.0 0.51 58Forecast
Beaver Creek near Mason6.012.0 1.54 4Forecast
Llano River at Llano10.010.0 0.22 33Forecast
Sandy Creek near Kingsland8.012.0 4.60 0Forecast
Pedernales River near Fredericksburg12.022.0 4.54 2Forecast
Pedernales River near Johnson City13.014.0 11.59 2220Forecast
 
 
Lower Basin LocationBank Full Stage(ft)Flood Stage(ft)Current Stage(ft)Current Flow(cfs)Latest Forecast And More
Barton Creek at Loop 360, Austin8.011.0 7.39 2429Forecast
Colorado River at Austin25.033.0 26.87 16981Forecast
Onion Creek at Hwy 183, Austin15.017.0 14.73 5188Forecast
Colorado River at Bastrop14.023.0 3.34 478Forecast
Colorado River at Smithville10.020.0 1.78 625Forecast
Colorado River above La Grange19.026.0 4.86 956Forecast
Colorado River at Columbus30.034.0 9.92 550Forecast
Colorado River at Wharton20.039.0 8.27 287Forecast
Colorado River at Bay City23.044.0 3.18 783Forecast
San Bernard River at East Bernard13.017.0 6.07 0Forecast
Colorado River at Matagorda4.88.8 1.82  N/A
 
  Return to top  
  Useful Links
 
  LCRA Hydromet Real Time Data
http://hydromet.lcra.org/

LCRA Weather Summary
http://www.lcra.org/water/river-and-weather/weather-summary/Pages/default.aspx

How LCRA's System of Dams Works
http://www.lcra.org/water/floods/Pages/how-lcra-system-of-dams-works.aspx

Key elevations for Lake Travis during floods
http://www.lcra.org/water/flood/laketravisreleases.html

Austin - Travis County Information (Includes boating restrictions)
http://www.ci.austin.tx.us/oem/oem_results.cfm

USGS Real-time Streamflow for Texas
http://waterdata.usgs.gov/tx/nwis/current/?type=flow

USGS Real-time Lakes and Reservoirs for Texas
http://waterdata.usgs.gov/tx/nwis/current?type=lake

NWS 5-day Rain Forecasts
http://www.hpc.ncep.noaa.gov/qpf/day1-5.shtml

NWS West Gulf River Forecast Center Quick Briefing
http://www.srh.noaa.gov/wgrfc/HMDmain.php

NWS San Angelo Weather Office and Flood Forecasts Map
http://water.weather.gov/ahps2/index.php?wfo=sjt

NWS Austin/San Antonio Weather Office and Flood Forecasts Map
http://water.weather.gov/ahps2/index.php?wfo=ewx

NWS Houston/Galveston Weather Office and Flood Forecasts Map
http://water.weather.gov/ahps2/index.php?wfo=hgx

NWS Doppler Radars
http://radar.weather.gov/ridge/Conus/southplains.php
http://radar.weather.gov/ridge/Conus/full_loop.php

NWS Storm Prediction Center (Tornadoes and severe storms)
http://www.spc.noaa.gov

NWS National Hurricane Center (Hurricanes and tropical storms)
http://www.nhc.noaa.gov

 
  Return to top  
  Words and Definitions
 
 

Water Glossary

Action Stage: The stage at which some sort of action is taken for a point along the river. Action Stage is different for all points depending on the community's needs - it may be flooding of secondary roads or just a "heads up" that the river is rising. Action Stage is determined by the National Weather Service. Sometimes used interchangeably with Bank Full Stage.

Bank Full Stage: The stage at which a river will not overflow its river banks or cause any significant damage within the river reach. Bank Full Stage is determined by the National Weather Service. Sometimes used interchangeably with action stage.

Cubic Feet per Second (cfs): A measure of streamflow. One CFS is equal to about 450 gallons per minute.

Elevation: The height of water in a lake or reservoir above mean sea level.

Flash Flood: A flood which follows within a few hours of heavy or excessive rainfall.

Flash Flood Warning: Flash flooding has been reported or is imminent – take necessary precautions.

Flash Flood Watch: Flash flooding is possible within the designated watch area – be alert.

Floodgates: Solid gates that are opened as needed to release floodwaters.

Flood Stage: The stage at which roads or buildings begin to get affected. Flood Stage is determined by the National Weather Service.

Hydrogeneration: Using water that is passed through a dam to generate electrical power with a turbine.

Mean Sea Level (msl): The elevation of the ocean halfway between high and low tide. Elevations are measured in feet above mean sea level as a point of reference.

Operating Range: The elevations between which the lakes are operated during normal conditions. Lake levels can fluctuate outside of these ranges at times.

Pass-Through Lakes: Lakes designed to allow water to pass through as opposed to being stored. Pass-through lakes do not have a constant level. Lakes Inks, LBJ, Marble Falls and Austin are "pass-through" lakes.

Spillway: The area of a dam that is designed to allow water to flow freely over it.

Stage: The height of water flowing in a river above a nearby reference point, for example, the height of the water above the river bed.

Please call the LCRA river and lake information line at 1-800-776-5272 for more information.

 
  Return to top  
   
 
www.LCRA.org