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Rio Grande at Del Rio, TX (DLRT2)


Data Type




Inundation Levels
NAVD88 Stage

923.5* 54.1*
920.8* 51.4*
918.1* 48.7*
914.9* 45.5*
911.6* 42.2*
907.7* 38.3*
Record Crest: 38.25 ft
907.4 38.0
906.4 37.0
905.4 36.0
903.4 34.0
902.4 33.0
900.4 31.0
899.4 30.0
898.4 29.0
897.4 28.0
896.4 27.0
894.4 25.0
893.4 24.0
892.4 23.0
891.4 22.0
890.4 21.0
889.4 20.0
888.4 19.0
887.4 18.0
886.4 17.0
885.4 16.0
884.4 15.0
883.4 14.0
882.4 13.0
881.4 12.0
880.4 11.0
879.4 10.0
878.4 9.0
877.4 8.0
876.9 7.5

Major Flooding Begins

876.4 7.0
875.4 6.0
875.1 5.7
874.4 5.0
873.8 4.4
* = Extended rating
Weather Forecast Office Austin/San Antonio, TX West Gulf River Forecast Center

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Current Stage:
1.6 ft at 10/21/2014 13:15:00 UTC
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Inundation Legend Inundation Legend
USGS Gauge Location Gauge Location

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:7.5
Moderate Flood Stage:4.4
Flood Stage:4
Action Stage:4

Historical Crests
(1) 38.25 ft on 06/28/1954
(2) 34.50 ft on 09/01/1932
(3) 33.60 ft on 06/24/1948
(4) 29.90 ft on 09/24/1964
(5) 24.50 ft on 09/05/1935
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(P): Preliminary values subject to further review.

Low Water Records

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
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21 (6.4 meters), Massive flooding washes smaller homes and mobile homes downstream in the Vega Verde Subdivision and floods hundreds of homes. The approach to the Highway 377 International Bridge is under several feet of water. Homes, businesses, streets and bridges along San Felipe Street flood, including the Guyler Street bridge.
18 (5.5 meters), Massive flooding to the roofs of homes in the Vega Verde subdivision below Amistad Dam floods hundreds of homes and washes smaller homes and mobile homes downstream. The Highway 377 approach to the International Bridge floods.
14 (4.3 meteres), Hundreds of homes flood in the Vega Verde subdivision below Amistad Dam with water to the roofs of some. Smaller homes and mobile homes wash downstream. Flow is over a half mile wide in the flood plain between Amistad Dam and Highway 377. Life threatening conditions on the United States and Mexican sides.
11 (3.4 meters), Major flooding. Nearly all homes in the Vega Verde subdivision are now in the flow of the river and cut off.
10 (3.1 meters), Major flooding is occurring. Water reaches the entrance to the Ingram Readymix Plant on Cienegas Road just north of the intersection with Vega Verde Road. A small section of homes located between the 6600 and 7700 blocks of Vega Verde Road remain out of the river channel. Many homes and structures in the low-lying areas of Vega Verde Road are standing in the flow of the river.
8 (2.4 meters), Major flooding. Water reaches the intersection of Vega Verde and Old Foster Road. Many of the homes in the Vega Verde subdivision are now in the flow of the river.
6 (1.8 meters), Moderate lowland flooding occurs. Water is well over the road in the lowest section of the Vega Verde subdivision and is impassible by cars and trucks. Water surrounds some of the homes in the lowest areas of the subdivision. Water also partially encompasses several homes with water covering most of the back yard and coming close to some homes in the subdivision.
4.7 (1.4 meters), Moderate lowland flooding reaches the slab elevation of the lowest homes in the Vega Verde subdivision below Amistad Dam and cuts behind the lowest residential areas cutting them off.
4.4 (1.3 meters), Minor lowland flooding cuts off some residents in the Vega Verde Subdivision below Amistad Dam, and a low section of the road through the subdivision floods. The flow approaches the lowest homes in the subdivision.
4 (1.2 meters), The flow is overbanks into lowest areas of the flood plain, threatening to flood the road through the lowest sections of the Vega Verde subdivision.
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Page last modified: 16-Jul-2014 2:12 AM
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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.