Situation Report  
   
 
SummaryLast Update: Aug 28 2015 2:44PM

This Flood Summary Report provides information about current river operations and conditions of the Colorado River and the Highland Lakes related to flood control operations, and is updated when conditions warrant. The LCRA River Operations Control Center posts the most recent information about water supply operations on the River Report, including long-range forecasts for lakes Buchanan and Travis.

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.

 
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  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/BuchananAug 29 2015 11:45AM1006.59887.33Aug 28 2015 2:44PM No gate operations for flood are expected at this time.
Inks/InksAug 29 2015 11:45AM887.27825.00Aug 28 2015 2:44PM Flow over the spillway of Inks Dam is not expected at this time. (Inks Dam has a spillway, but no floodgates.)
LBJ/WirtzAug 29 2015 11:45AM824.66736.67Aug 28 2015 2:45PM No gate operations for flood are expected at this time.
Marble Falls/StarckeAug 29 2015 11:45AM736.33676.12Aug 28 2015 2:45PM No gate operations for flood are expected at this time.
Travis/MansfieldAug 29 2015 11:45AM668.34492.03Aug 28 2015 2:45PM No gate operations for flood are expected at this time.
Austin/MillerAug 29 2015 11:45AM492.04428.36Aug 28 2015 2:45PM No gate operations for flood are expected at this time.
 
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  Lake Levels Over the Last 7 Days
*Disclaimer: Data is automatically retrieved and subject to revision.
Floodgate Operations and Forecasts  
 
Lake Buchanan
Last Update: Aug 28 2015 2:44PM

Inflows: Inflows to Lake Buchanan are below levels that would require flood operations at Buchanan Dam.

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 current forecasts for Lake Buchanan.
 
 
Inks Lake
Last Update: Aug 28 2015 2:44PM

Inflows: Inflows to Inks Lake are below levels that would require flood operations at Inks Dam.

Spillway: Flow over the spillway of Inks Dam 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): Inks Lake is expected to remain within its normal operating range.
 
 
Lake LBJ
Last Update: Aug 28 2015 2:45PM

Inflows: Inflows to Lake LBJ are below levels that would require flood operations at Wirtz Dam.

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

Lake level forecast (Forecast is subject to change as conditions develop): Lake LBJ is expected to remain within its normal operating range.
 
 
Lake Marble Falls
Last Update: Aug 28 2015 2:45PM

Inflows: Inflows to Lake Marble Falls are below levels that would require flood operations at Starcke Dam.

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

Lake level forecast (Forecast is subject to change as conditions develop): Lake Marble Falls is expected to remain within its normal operating range.
 
 
Lake Travis
Last Update: Aug 28 2015 2:45PM

Inflows: Inflows to Lake Travis are below levels that would require flood operations at Mansfield Dam.

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: Aug 28 2015 2:45PM

Inflows: Inflows to Lake Austin are below levels that would require flood operations at Tom Miller Dam.

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

Lake level forecast (Forecast is subject to change as conditions develop): Lake Austin 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.  
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  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 1.70 0Forecast
Pecan Bayou near Mullin20.040.0 0.71 5Forecast
San Saba River at Menard12.018.0 2.35 7Forecast
San Saba River near Brady16.030.0 1.58 0Forecast
San Saba River at San Saba20.024.0 2.48 19Forecast
Colorado River near San Saba25.030.0 1.69 23Forecast
Llano River near Junction12.016.0 2.13 87Forecast
Llano River near Mason6.013.0 0.63 72Forecast
Beaver Creek near Mason9.012.0 1.42 0Forecast
Llano River at Llano10.010.0 0.35 46Forecast
Sandy Creek near Kingsland8.012.0 4.61 0Forecast
Pedernales River near Fredericksburg12.022.0 4.40 1Forecast
Pedernales River near Johnson City13.014.0 10.20 4Forecast
 
 
Lower Basin LocationBank Full Stage(ft)Flood Stage(ft)Current Stage(ft)Current Flow(cfs)Latest Forecast And More
Barton Creek at Loop 360, Austin8.08.0 1.78 0Forecast
Colorado River at Austin25.033.0 11.06 123Forecast
Onion Creek at Hwy 183, Austin15.017.0 4.41 4Forecast
Colorado River at Bastrop14.023.0 2.54 298Forecast
Colorado River at Smithville10.020.0 1.29 311Forecast
Colorado River above La Grange19.026.0 3.38 324Forecast
Colorado River at Columbus30.034.0 9.29 362Forecast
Colorado River at Wharton20.039.0 8.17 312Forecast
Colorado River at Bay City23.044.0 2.84 658Forecast
San Bernard River at East Bernard13.017.0 6.27 3Forecast
Colorado River at Matagorda4.88.8 1.44  N/A
 
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  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

Emergency Information for City of Austin (includes boating restrictions)
http://www.austintexas.gov/department/hsem

Road Closures in Austin and Surrounding Areas (hosted by City of Austin)
http://www.atxfloods.com/

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.wpc.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

 
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  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.

 
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