| 70.0 | THE RIVER EXCEEDS THE LEVEES - FLOODING IS WIDESPREAD, DISASTROUS, AND LIFE THREATENING - | | 65.0 | THE RIVER IS APPROACHING THE TOP OF THE LEVEES - RESIDENTS SHOULD BE PREPARED TO EVACAUTE RAPIDLY TO SEVERAL TENS OF MILES FROM THE LOWER RIO GRANDE CHANNEL AS EMERGENCY OFFICIALS DIRECT - PERSONS IN THE FLOOD PLAIN SHOULD MONITOR THE LATEST STAGE AND FORECAST LEVELS OF THE RIVER CONTINUOUSLY. | | 58.0 | MAJOR FLOODING COVERS THE FLOOD PLAIN INSIDE THE LEVEES-THREATENS LOWEST RESIDENCES IN BROWNSVILLE AND MATAMOROS - PERSONS VULNERABLE TO LOWLAND FLOODING SHOULD MOVE EQUIPMENT TO HIGHER GROUND AND MONITOR THE LEVEL OF THE RIVER ESPECIALLY IF HEAVY RAIN CONDITIONS DEVELOP. | | 56.0 | MODERATE LOWLAND FLOODING INSIDE THE LEVEES REACHES LOWEST SECONDARY ROADS AND LOW BRIDGES | | 55.0 | MINOR LOWLAND FLOODING REACHES INTO THE LOWEST SECTIONS OF THE FLOOD PLAIN INSIDE THE LEVEES WITH NO SIGNIFICANT DAMAGE | | 44.0 | THE RIVER WILL EXCEED THE LOWEST BANKS OF THE LOWEST SECTIONS INSIDE THE LEVEES |
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1) 61.06 ft on 09/29/1967
2) 55.98 ft on 10/04/1988
3) 55.18 ft on 09/28/1988
4) 54.85 ft on 06/02/1992
5) 54.41 ft on 09/13/2010
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Low water records are unavailable.
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