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Hydrograph River at a Glance Download Inundation
Colorado River (TX) above La Grange Stage (ft)Flow (cfs)Observed: 7.95 ft at 6:00AM Dec 04, 2016Observed: 7.88 ft at 7:00AM Dec 04, 2016Observed: 7.79 ft at 8:00AM Dec 04, 2016Observed: 7.71 ft at 9:00AM Dec 04, 2016Observed: 7.62 ft at 10:00AM Dec 04, 2016Observed: 7.56 ft at 11:00AM Dec 04, 2016Observed: 7.52 ft at 12:00PM Dec 04, 2016Observed: 7.48 ft at 1:00PM Dec 04, 2016Observed: 7.44 ft at 2:00PM Dec 04, 2016Observed: 7.41 ft at 3:00PM Dec 04, 2016Observed: 7.38 ft at 4:00PM Dec 04, 2016Observed: 7.34 ft at 5:00PM Dec 04, 2016Observed: 7.3 ft at 6:00PM Dec 04, 2016Observed: 7.27 ft at 7:00PM Dec 04, 2016Observed: 7.25 ft at 8:00PM Dec 04, 2016Observed: 7.24 ft at 9:00PM Dec 04, 2016Observed: 7.22 ft at 10:00PM Dec 04, 2016Observed: 7.26 ft at 11:00PM Dec 04, 2016Observed: 7.33 ft at 12:00AM Dec 05, 2016Observed: 7.42 ft at 1:00AM Dec 05, 2016Observed: 7.57 ft at 2:00AM Dec 05, 2016Observed: 7.82 ft at 3:00AM Dec 05, 2016Observed: 8.07 ft at 4:00AM Dec 05, 2016Observed: 8.38 ft at 5:00AM Dec 05, 2016Observed: 8.69 ft at 6:00AM Dec 05, 2016Observed: 9.08 ft at 7:00AM Dec 05, 2016Observed: 9.42 ft at 8:00AM Dec 05, 2016Observed: 9.79 ft at 9:00AM Dec 05, 2016Observed: 10.15 ft at 10:00AM Dec 05, 2016Observed: 10.45 ft at 11:00AM Dec 05, 2016Observed: 10.8 ft at 12:00PM Dec 05, 2016Observed: 11.1 ft at 1:00PM Dec 05, 2016Observed: 11.5 ft at 2:00PM Dec 05, 2016Observed: 11.81 ft at 3:00PM Dec 05, 2016Observed: 12.16 ft at 4:00PM Dec 05, 2016Observed: 12.47 ft at 5:00PM Dec 05, 2016Observed: 12.73 ft at 6:00PM Dec 05, 2016Observed: 12.91 ft at 7:00PM Dec 05, 2016Observed: 13.08 ft at 8:00PM Dec 05, 2016Observed: 13.22 ft at 9:00PM Dec 05, 2016Observed: 13.28 ft at 10:00PM Dec 05, 2016Highest Observation: 13.32 ft at 11:00PM Dec 05, 2016Observed: 13.31 ft at 12:00AM Dec 06, 2016Observed: 13.27 ft at 1:00AM Dec 06, 2016Observed: 13.16 ft at 2:00AM Dec 06, 2016Observed: 13.03 ft at 3:00AM Dec 06, 2016Observed: 12.87 ft at 4:00AM Dec 06, 2016Observed: 12.7 ft at 5:00AM Dec 06, 2016Observed: 12.53 ft at 6:00AM Dec 06, 2016Observed: 12.3 ft at 7:00AM Dec 06, 2016Observed: 12.11 ft at 8:00AM Dec 06, 2016Observed: 11.92 ft at 9:00AM Dec 06, 2016Observed: 11.72 ft at 10:00AM Dec 06, 2016Observed: 11.54 ft at 11:00AM Dec 06, 2016Observed: 11.38 ft at 12:00PM Dec 06, 2016Observed: 11.09 ft at 2:00PM Dec 06, 2016Observed: 10.98 ft at 3:00PM Dec 06, 2016Observed: 10.88 ft at 4:00PM Dec 06, 2016Observed: 10.79 ft at 5:00PM Dec 06, 2016Observed: 10.7 ft at 6:00PM Dec 06, 2016Observed: 10.62 ft at 7:00PM Dec 06, 2016Observed: 10.54 ft at 8:00PM Dec 06, 2016Observed: 10.44 ft at 9:00PM Dec 06, 2016Observed: 10.31 ft at 10:00PM Dec 06, 2016Observed: 10.18 ft at 11:00PM Dec 06, 2016Observed: 10.03 ft at 12:00AM Dec 07, 2016Observed: 9.88 ft at 1:00AM Dec 07, 2016Observed: 9.71 ft at 2:00AM Dec 07, 2016Observed: 9.54 ft at 3:00AM Dec 07, 2016Observed: 9.38 ft at 4:00AM Dec 07, 2016Observed: 9.22 ft at 5:00AM Dec 07, 2016Observed: 9.07 ft at 6:00AM Dec 07, 2016Observed: 8.91 ft at 7:00AM Dec 07, 2016Observed: 8.78 ft at 8:00AM Dec 07, 2016Observed: 8.63 ft at 9:00AM Dec 07, 2016Observed: 8.47 ft at 10:00AM Dec 07, 2016Observed: 8.34 ft at 11:00AM Dec 07, 2016Observed: 8.16 ft at 12:00PM Dec 07, 2016Observed: 8.01 ft at 1:00PM Dec 07, 2016Observed: 7.85 ft at 2:00PM Dec 07, 2016Observed: 7.7 ft at 3:00PM Dec 07, 2016Observed: 7.53 ft at 4:00PM Dec 07, 2016Observed: 7.37 ft at 5:00PM Dec 07, 2016Observed: 7.23 ft at 6:00PM Dec 07, 2016Observed: 7.07 ft at 7:00PM Dec 07, 2016Observed: 6.94 ft at 8:00PM Dec 07, 2016Observed: 6.79 ft at 9:00PM Dec 07, 2016Observed: 6.65 ft at 10:00PM Dec 07, 2016Observed: 6.53 ft at 11:00PM Dec 07, 2016Observed: 6.4 ft at 12:00AM Dec 08, 2016Observed: 6.3 ft at 1:00AM Dec 08, 2016Observed: 6.19 ft at 2:00AM Dec 08, 2016Observed: 6.08 ft at 3:00AM Dec 08, 2016Observed: 5.98 ft at 4:00AM Dec 08, 2016Observed: 5.9 ft at 5:00AM Dec 08, 2016Observed: 5.81 ft at 6:00AM Dec 08, 2016Observed: 5.73 ft at 7:00AM Dec 08, 2016Observed: 5.66 ft at 8:00AM Dec 08, 2016Observed: 5.58 ft at 9:00AM Dec 08, 2016Observed: 5.53 ft at 10:00AM Dec 08, 2016Observed: 5.45 ft at 11:00AM Dec 08, 2016Observed: 5.39 ft at 12:00PM Dec 08, 2016Observed: 5.33 ft at 1:00PM Dec 08, 2016Observed: 5.28 ft at 2:00PM Dec 08, 2016Observed: 5.21 ft at 3:00PM Dec 08, 2016Observed: 5.17 ft at 4:00PM Dec 08, 2016Observed: 5.12 ft at 5:00PM Dec 08, 2016Observed: 5.07 ft at 6:00PM Dec 08, 2016Observed: 5.04 ft at 7:00PM Dec 08, 2016Observed: 4.99 ft at 8:00PM Dec 08, 2016Observed: 4.95 ft at 9:00PM Dec 08, 2016Observed: 4.9 ft at 10:00PM Dec 08, 2016Observed: 4.87 ft at 11:00PM Dec 08, 2016Observed: 4.82 ft at 12:00AM Dec 09, 2016Observed: 4.79 ft at 1:00AM Dec 09, 2016Observed: 4.75 ft at 2:00AM Dec 09, 2016Observed: 4.72 ft at 3:00AM Dec 09, 2016Observed: 4.69 ft at 4:00AM Dec 09, 2016Observed: 4.67 ft at 5:00AM Dec 09, 2016USGS--Water Resources of the United StatesLGRT2(plotting HGIRZ) Graph Created (5:17AM Dec 9, 2016)ObservedLatest observed value: 4.67 ft at 5:00 AM CST 9-Dec-2016. Flood Stage is 26 ft
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About this graph
Tabular Data (UTC)
Tabular Data (CST)
XML Data
RSS Files
Datum: NAVD88
NOTE: Forecasts for the Colorado River (TX) above La Grange are issued as needed during times of high water, but are not routinely available.
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Upstream Gauge - near Smithville Upstream Gauge Downstream Gauge Downstream Gauge - at Columbus
Flood Categories (in feet)
Major Flood Stage: 37
Moderate Flood Stage: 32
Flood Stage: 26
Action Stage: 19
Low Stage (in feet): -9999

Historic Crests
(1) 56.70 ft on 07/09/1869
(2) 56.40 ft on 12/05/1913
(3) 50.84 ft on 06/17/1935
(4) 45.50 ft on 10/20/1998
(5) 43.32 ft on 12/23/1991
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 42.28 ft on 05/28/2016
(2) 35.09 ft on 11/02/2015 (P)
(3) 37.22 ft on 05/27/2015
(4) 41.56 ft on 11/23/2004
(5) 45.50 ft on 10/20/1998
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to

Zoom Level:16
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Gauge LocationGauge Map Marker
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
45 Major flooding with water to the roofs of lowest homes in the Frisch Auf Subdivision. Numerous mobile homes flood severely. Livestock in the flood plain above Smithville to below Columbus are vulnerable to drowning. Roads and bridges in the flood plain are severely flooded and dangerous. River is to the level of 2nd bank and threatens homes and businesses in La Grange.
43 Disastrous flooding of the Colorado River damages several mobile homes in La Grange and five permanent homes in the Fritsch Auf subdivision are flooded up to six to seven feet. Severely flooded roads and bridges near the river make travel and evacuations dangerous.
40 The lowest sites of a trailer park in La Grange in the northwest quadrant of Highway 71 and the Colorado river are threatened. Lowest homes in the Fritsch Auf subdivision have several feet of water in them. Severely flooded roads and bridges near the river make travel and evacuations dangerous.
37 Major flooding of the Colorado River reaches lowest homes in the Fritsch Auf Subdivision on the south bank of the Colorado River in La Grange. Severely flooded roads and bridges near the river make travel and evacuations very dangerous.
36 The lowest part of the road into the Fritsch Auf Subdivision just south of the Colorado River south of downtown floods. The Colorado River approaches lowest homes in the Fritsch Auf Subdivision and additional flow down Buckners Creek will flood them.
32 Moderate lowland flooding reaches the flood plain near La Grange. Homes in the Fritsch Auf Subdivision on the south bank of the Colorado River may be threatened if heavy runoff down Buckners Creek adds to the Colorado River flow at this level.
29 Flow covers lowest areas of the flood plain with no major damage. Lowest roads and bridges are flooded.
26 Minor lowland flooding covers low areas of the flood plain with no significant damage. Lowest roads and bridges are flooded.
23 Flow exceeds the low banks into lowest areas of the flood plain with no damage. Lowest roads and bridges are flooded.
19 Flow exceeds lowest sections of the banks.
About This Location Collapse

Latitude: 29.912222° N, Longitude: 96.903611° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 26 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
(gauge height = flood stage)
Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 210.04 ft 236.04 ft Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:

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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Austin/San Antonio Weather Forecast Office
2090 Airport Rd.
New Braunfels, TX 78130
(830) 629-0130
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Page last modified: 13-Aug-2015 2:15 AM
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