Situation Report  
   
 
SummaryLast Update: Apr 17 2015 4:22PM

This report provides the latest information when LCRA conducts flood operations.

A stormy and unsettled weather pattern is forecast to continue through Saturday, April 18. LCRA will be closely monitoring the potential for storm runoff and inflows that may need to be passed through the smaller lakes (Inks, LBJ, Marble Falls and Austin) and the upper end of Lake Travis. Lakes Buchanan and Travis remain far below full at this time, and flood operations are unlikely at Mansfield and Buchanan dams.

See the Central Texas 5-Day Forecast for the latest weather updates from LCRA meteorologist, Bob Rose.

See the River Report for current information about LCRA's daily water supply operations and long-range forecasts for lakes Buchanan and Travis.

When flash flooding occurs, avoid unnecessary travel. If you must travel, don't drive into flooded roadways. Remember "Turn around, don't drown."

Unscheduled releases from the Highland Lakes dams may occur suddenly and unexpectedly at any time due to emergency hydroelectric generation or other reasons. The public should exercise caution and avoid being in the water near the dams at all times.

 
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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/BuchananApr 18 2015 6:30AM988.23887.11Apr 17 2015 4:12PM No gate operations for flood are expected at this time.
Inks/InksApr 18 2015 6:30AM887.02824.83Apr 17 2015 4:12PM Flow over the spillway is not expected at this time. (Inks Dam has a spillway, but no floodgates.)
LBJ/WirtzApr 18 2015 6:30AM824.59736.89Apr 17 2015 4:12PM No gate operations for flood are expected at this time.
Marble Falls/StarckeApr 18 2015 6:30AM736.57676.14Apr 17 2015 4:12PM No gate operations for flood are expected at this time.
Travis/MansfieldApr 18 2015 6:30AM628.50492.06Apr 17 2015 4:12PM No gate operations for flood are expected at this time.
Austin/MillerApr 18 2015 6:30AM492.14428.46Apr 17 2015 4:12PM 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: Apr 17 2015 4:12PM

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 current forecasts for Lake Buchanan.
 
 
Inks Lake
Last Update: Apr 17 2015 4:12PM

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: Apr 17 2015 4:12PM

Inflows: Inflows are below levels that 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: Apr 17 2015 4:12PM

Inflows: Inflows to the lake are exceeding the capacity of the turbines.

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: Apr 17 2015 4:12PM

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 Travis.
 
 
Lake Austin
Last Update: Apr 17 2015 4:12PM

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.
 
 
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 2.02 0Forecast
Pecan Bayou near Mullin20.040.0 0.74 6Forecast
San Saba River at Menard12.018.0 2.57 19Forecast
San Saba River near Brady16.030.0 2.19 19Forecast
San Saba River at San Saba20.024.0 2.91 55Forecast
Colorado River near San Saba25.030.0 1.94 55Forecast
Llano River near Junction12.016.0 2.07 70Forecast
Llano River near Mason6.013.0 0.59 91Forecast
Beaver Creek near Mason9.012.0 1.86 9Forecast
Llano River at Llano10.010.0 0.52 64Forecast
Sandy Creek near Kingsland8.012.0 5.21 25Forecast
Pedernales River near Fredericksburg12.022.0 5.02 13Forecast
Pedernales River near Johnson City13.014.0 10.34 13Forecast
 
 
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 3.19 42Forecast
Colorado River at Austin25.033.0 12.88 408Forecast
Onion Creek at Hwy 183, Austin15.017.0 5.83 45Forecast
Colorado River at Bastrop14.023.0 2.78 427Forecast
Colorado River at Smithville10.020.0 2.99 1582Forecast
Colorado River above La Grange19.026.0 10.73 6473Forecast
Colorado River at Columbus30.034.0 19.15 9788Forecast
Colorado River at Wharton20.039.0 17.76 7084Forecast
Colorado River at Bay City23.044.0 13.63 8795Forecast
San Bernard River at East Bernard13.017.0 17.90 3751Forecast
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.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

 
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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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