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| 34.0 |
THIS IS THE FLOOD OF RECORD...WHICH CAUSED MASSIVE LOWLAND FLOODING
OCT 21, 1998 |
| 28.0 |
MAJOR FLOODING APPROACHES THE RIVER LEVEES NEAR THE SAN ANTONIO RIVER CONFLUENCE. MILES OF HIGHWAY 35 AND THE FLOOD PLAIN NEAR IT FLOOD...CUTTING OFF MANY HOMES AND FLOODING A FISHING CAMP NEAR TIVOLI. HUNDREDS OF LIVESTOCK ARE CUT OFF AND POTENTIALLY DROWN |
| 27.5 |
MAJOR FLOODING OCCURS...ISOLATING LIVESTOCK. THE RIVER FLOODS EQUIPMENT AND LIVESTOCK IN THE FLOOD PLAIN AND CAN FLOOD RESIDENCES DOWNSTREAM NEAR TIVOLI. HIGHWAY 35 EAST OF TIVOLI FLOODS |
| 27.0 |
MAJOR FLOODING OCCURS. FLOW DOWNSTREAM NEAR HIGHWAY 35 IS SEVERAL HUNDRED YARDS WIDE...CUTTING OFF MANY OF THE LOWEST HOMES. LIVESTOCK ARE CUT OFF AND COULD DROWN. PUMPS...TANK BATTERIES...AND ANY EQUIPMENT IN THE FLOOD PLAIN BELOW VICTORIA ARE FLOODED. THE CAMPGROUND NEAR TIVOLI BELOW HIGHWAY 35 AND RESIDENCES JUST ABOVE HIGHWAY 35 ARE FLOODED |
| 26.0 |
IRRIGATION AND OIL WELL PUMPS...TANK BATTERIES...AND EQUIPMENT IN THE LOWER FLOOD PLAIN BELOW VICTORIA FLOOD. LIVESTOCK ARE CUT OFF...MAY HAVE TO BE FED BY BOAT...AND COULD DROWN. HOMES DOWNSTREAM ABOVE HIGHWAY 35 ON THE LEFT BANK ARE CUT OFF |
| 24.0 |
MODERATE LOWLAND FLOODING OCCURS...WITH THE RIVER REACHING WELL INTO THE FLOOD PLAIN. ANY OIL TANK BATTERIES...PUMP JACKS...AND SECONDARY ROADS NEAR THE RIVER MAY BE FLOODED |
| 20.0 |
MINOR LOWLAND FLOODING OCCURS...WITH THE FLOW REACHING THE RIGHT FLOOD PLAIN NEAR THE INVISTA PLANT NEAR BLOOMINGTON. DOWNSTREAM ABOVE HIGHWAY 35...THE FLOW ESCAPES INTO THE LEFT FLOOD PLAIN CUTTING OFF THE LOWEST HOMES |
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Latitude: 28.661900° N,
Longitude: 96.965300° W,
Horizontal Datum:
NAD83
River Stage
Reference Frame |
Gauge Height |
Flood Stage |
Uses |
| NWS stage |
0 ft |
20 ft |
Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps |
| Vertical Datum |
Elevation
(gauge height = 0) |
Elevation
(gauge height = flood stage) |
Elevation information source |
| NAVD88 |
N/A |
N/A |
Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps |
| NGVD 29 |
0 ft |
20 ft |
Older USGS topographic maps, NGVD29 benchmarks |
| MSL |
N/A |
N/A |
Older USGS topographic maps, MSL benchmarks |
| Other |
N/A |
N/A |
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Hydrologic Resources
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Additional Resources
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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. |
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NWS Information |
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weather.gov 
