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Information made possible by Fort Bend County
Sienna South/Brazos River Elevation Sensors 80307
8030 Brazos River @ Sienna South
Fort Bend County
Sensor ID 80307 803010
Sensor Type Pressure Transducer Pressure Transducer
Sensor Position Sienna South Brazos River
Installed 8/8/2024 8/8/2024
Flooding Likely 53.00' 55.00'
Flooding Possible 50.00' 52.00'
Bottom of Sienna South/Brazos River 32.00' 30.00'
Tip of Orifice 32.61' 30.31'
Measuring Plate 69.21' 69.18'
Benchmark 69.21' 69.21'
Benchmark is a brass cap located on the downstream side on top of structure.
1988 NAVD

The Sienna South/Brazos River Elevation chart showing Sienna South/Brazos River Elevation Left series, Stream Elevation Right series.
Cross Section
Sienna South/Brazos River Elevation for sensors
Sienna South is 32.73' on 12/27/2025 2:41 AM
Brazos River is 30.27' on 12/27/2025 2:41 AM
Export to Excel
2 Days
Sensor
Reading Date
Elevation
8030712/27/2025 2:41 AM32.73'
8030712/26/2025 10:41 PM32.74'
8030712/26/2025 6:41 PM32.78'
8030712/26/2025 2:41 PM32.74'
8030712/26/2025 10:41 AM32.69'
8030712/26/2025 6:41 AM32.73'
8030712/26/2025 2:41 AM32.73'
8030712/25/2025 10:41 PM32.73'
8030712/25/2025 6:41 PM32.78'
8030712/25/2025 2:41 PM32.73'
8030712/25/2025 2:17 PM32.72'
8030712/25/2025 10:51 AM32.62'
8030712/25/2025 10:41 AM32.66'
8030712/25/2025 6:41 AM32.73'
80301012/27/2025 2:41 AM30.27'
80301012/26/2025 10:41 PM30.27'
80301012/26/2025 6:41 PM30.27'
80301012/26/2025 2:41 PM30.28'
80301012/26/2025 10:41 AM30.27'
80301012/26/2025 6:41 AM30.27'
80301012/26/2025 2:41 AM30.27'
80301012/25/2025 10:41 PM30.27'
80301012/25/2025 6:41 PM30.27'
80301012/25/2025 2:41 PM30.27'
80301012/25/2025 10:41 AM30.27'
80301012/25/2025 6:41 AM30.27'
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