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Rio Grande at Laredo, TX (LDOT2)


Data Type




Inundation Levels
NAVD88 Stage

420.7* 69.4*
418.6* 67.3*
416.5* 65.2*
413.8* 62.5*
Record Crest: 62.48 ft
413.3 62.0
412.3 61.0
411.3 60.0
410.3 59.0
409.3 58.0
407.3 56.0
405.3 54.0
404.6 53.3
403.3 52.0
401.3 50.0
400.3 49.0
399.3 48.0
397.9 46.6
397.3 46.0
396.3 45.0
395.6 44.3
395.3 44.0
394.3 43.0
393.3 42.0
391.8 40.5
390.3 39.0
389.3 38.0
388.3 37.0
387.3 36.0
385.3 34.0
383.3 32.0
381.3 30.0

Major Flooding Begins

380.3 29.0
379.3 28.0
378.3 27.0
377.3 26.0
375.3 24.0
373.3 22.0
371.3 20.0
370.3 19.0
369.3 18.0
367.3 16.0
365.3 14.0
364.3 13.0

Moderate Flooding Begins

363.3 12.0
362.3 11.0
361.3 10.0
360.3 9.0
359.3 8.0

Minor Flooding Begins

358.3 7.0

Near Flooding Begins

357.3 6.0
* = Extended rating
Weather Forecast Office Corpus Christi, TX West Gulf River Forecast Center

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Current Stage:
2.3 ft at 11/29/2014 08:15:00 UTC
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Inundation Legend Inundation Legend
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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.

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Map Overlays

Flood Categories (in feet)
Major Flood Stage: 30
Moderate Flood Stage: 13
Flood Stage: 8
Action Stage: 7
Low Stage (in feet): 0

Historic Crests
(1) 62.48 ft on 01/01/1865
(2) 61.35 ft on 06/30/1954
(3) 52.50 ft on 09/04/1932
(4) 42.45 ft on 07/09/2010
(5) 38.98 ft on 06/30/1971
(6) 35.02 ft on 08/27/1998
(7) 33.14 ft on 07/01/1971
(8) 32.05 ft on 07/21/1975
(9) 31.63 ft on 10/06/1971
(10) 27.66 ft on 09/27/1974
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 17.18 ft on 06/23/2014
(2) 14.00 ft on 06/20/2014
(3) 12.72 ft on 10/15/2013
(4) 21.87 ft on 06/17/2013
(5) 8.92 ft on 04/28/2013
(6) 12.13 ft on 10/01/2012
(7) 42.45 ft on 07/09/2010
(8) 12.86 ft on 05/27/2010
(9) 17.04 ft on 04/18/2010
(10) 11.94 ft on 09/26/2008
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

Graphical representation of flood inundation for NWS flood categories are based on steady state hydraulic modeling of water surface elevations for incremented discharges. Map shows approximate inundation areas for given water surface elevations and should not be used for navigation or permitting or other legal purposes, but strictly as a planning reference tool.

Extended rating:
Rating Curve Extension - The Rating Curve Extension is calculated by using either a linear, logarithmic, or hydraulic technique to extend the rating curve above the currently established relationship between stage and flow.

Flood Impacts Collapse
If you notice any errors in the below information, please contact our Webmaster
63 or 19.2 meters, water rises to the CPL plant slab elevation. Extensive flooding occurs
62.5 or 19.05 meters, three quarters of the business district are under water
61.35 or 18.70 meters, this is the flood of record, occurring on June 30 1954
60.48 Or 18.44 meteres, 202 blocks, or about one fifth of the laredo business district and 170 blocks of neuvo laredo are under water
58.5 or 17.83 meters, the backwater up Zacate Creek cuts Laredo in half
54 or 16.50 meters, the water plant and U.S. Highway 81 are flooded
52 or 15.85 meters, all bridges on Zacate Creek are closed
47.5 or 14.48 meters, the flow reaches Matamoros Street Bridge over Zacte Creek
44 or 13.4 meters, massive residential and commercial flooding occurs. Near the river, and along Chacon and Zacate creeks, flooding can be life threatening, as the Rio Grande River backs them up. The sewage plant is under several feet of water. The International Bridge floor floods, and livestock are cut off and potentially drowned in the flood plain, above Eagle Pass to Falcon Reservoir
42.45 or 12.9 meters, water floods homes several feet deep along Los Martinez Drive in the Seven Lights Subdivision. Markley Lane, Marco Drive and Anna Avenue are completely flooded and closed. Mcnaboe Park is completely submerged with only the skate park visible. Water reaches the waterfront homes along Allen Drive in the Quail Creek Subdivision. Water reaches the base of the International Bridge. Water street is flooded in downtown Laredo from south Main Avenue eastward to Business 35 and enters the mall
40.5 or 12.3 meters, hundreds of homes along Zacate and Chacon creeks and near the Rio Grande River flood. Many businesses flood near the river. Flow is over the low steel of the International Bridge and within three feet of the bridge floor. Water is to the sewage plant
38 or 11.6 meters, numerous homes flood along Chacon and Zacate creeks, as the Rio Grande River backs up them. Businesses in lower areas near the river flood, as well as streets, roads, and parking areas near the river. Flow is to the low steel of the International Bridge and within two feet of the sewage plant
37 or 11.3 meters, the lowest businesses near the river are flooded. Flow is to the low steel of the International Bridge. Flow is also within a foot of homes along Chacon and Zacate Creeks, as the Rio Grande River backs up near them. Any runoff down these creeks will flood these creeks. Numerous roads and bridges in the flood plain below Eagle Pass to Falcon Dam are flooded and dangerous
32 or 9.8 meters, the lowest businesses near the river flood in downtown Laredo. Runoff down from Chacon and Zacate Creeks add to the Rio Grande River backflow, and can flood homes along these creeks. Streets and bridges are flooded and are extremely dangerous to traffic
30 or 9.1 meters, major flooding occurs. The flow approaches businesses near the mall, and backs up Chacon and Zacate Creeks. Additional heavy rain and runoff down these creeks threatens homes along their banks. Streets and roads near the river and creeks flood, and are very dangerous to auto traffic
27 or 8.2 meters, water continues to back up in Zacate and Chicon Creeks. Water begins to approach streets and roads near the creeks, with water approaching Water Street. Most of south Main Avenue is under water
24 or 7.3 meters, several feet of water are covering Los Dos Laredos Park, as well as Pedergal and Ventura streets. Water flows well back into Zacate Creek
20 or 6.1 meters moderate lowland flooding occurs. Water is several feet deep over most of the mall and customs parking lots. The lowest residences are threatened and roads and low bridges become very dangerous
16 or 4.9 meters, water flows into the Los Dos Laredos Park and covers portions of Pedegal Street near the park. Water approaches and moves into portions of Ventura Street near the bridge
13 or 4.0 meters, autos and trucks flood in the lower sections of the mall parking lot. Water is several feet deep in the lower sections of the customs parking lot
8 or 2.4 meters, minor lowland flooding occurs. Flow reaches the lower sections of the customs parking lot in Laredo
7 or 2.1 meters, overbank conditions occur
Photos
(1) Normal Flow Looking Southwest
(2) Park and Bridge - Normal Flow
(3) Looking East From the Park
(4) July 2010 Flood: 3 Soccer Fields McNaboe Park
(5) Zacate Creek Normal Conditions
(6) July 2010 Flood: Zacate Creek Overflow From Rio Grande
(7) July 2010 Flood: McNaboe Park
(8) Jully 2010 Flood: Rio Grande Near International Bridge
(9) July 2010 Flood: Upriver From Santa Maria & Water St.
(10) Julyf 2010 Flood: Santa Maria & Water Street
(11) July 2010 Flood: Santa Maria & Water St. Looking Downriver
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Page last modified: 18-Nov-2014 3:58 PM
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Graphical representation of flood inundation for NWS flood categories are based on steady state hydraulic modeling of water surface elevations for incremented discharges. Map shows approximate inundation areas for given water surface elevations and should not be used for navigation or permitting or other legal purposes, but strictly as a planning reference tool.