USGS 08117300 Brazos Rv at GIWW Flood Gates nr Freeport, TX

PROVISIONAL DATA SUBJECT TO REVISION

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Funding for this site is provided by the cooperators / programs below:
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Corps of Engineers, Galveston District
Data are tidally affected -- Astronomical tides cause significant cycles of approximately 24.84 hours at this site. Because a different portion of the 24.84-hour tidal cycle is averaged in successive daily (24-hour) computations, a systematic secondary oscillation, unrelated to basin hydrology and having a period of about two weeks may be apparent in daily data.
This station managed by the Houston Field Unit.

Available Parameters Available Period
  
2023-01-19  2026-07-12
2023-01-19  2026-07-12
2023-07-12  2026-07-12
2023-07-12  2026-07-12
2023-07-12  2026-07-12
2023-07-12  2026-07-12
2023-07-12  2026-07-12
2023-07-12  2026-07-12
2023-07-12  2026-07-12
2023-07-12  2026-07-12
2026-03-14  2026-07-12
2023-07-12  2026-07-12
2026-03-14  2026-07-12
2026-03-14  2026-07-12
2026-03-14  2026-07-12
2026-03-14  2026-07-12







 (7)
 
  -- or --

 

 
Summary of all available data for this site
Instantaneous-data availability statement

Temperature, water, degrees Celsius, East Lock
Most recent instantaneous value: 31.2 07-12-2026   12:30 CDT
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Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius, East Lock
Most recent instantaneous value: 41800 07-12-2026   12:30 CDT
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Salinity, water, unfiltered, parts per thousand, East Lock
Most recent instantaneous value: 27 07-12-2026   12:30 CDT
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Estuary or ocean water surface elevation above NAVD 1988, feet, Brazos River
Most recent instantaneous value: 1.55 07-12-2026   12:30 CDT
Graph of Estuary or ocean water surface elevation above NAVD 1988, feet

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Estuary or ocean water surface elevation above NAVD 1988, feet, East Lock
Most recent instantaneous value: 1.61 07-12-2026   12:40 CDT
Graph of Estuary or ocean water surface elevation above NAVD 1988, feet

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Estuary or ocean water surface elevation above NAVD 1988, feet, East River
Most recent instantaneous value: 1.65 07-12-2026   12:40 CDT
Graph of Estuary or ocean water surface elevation above NAVD 1988, feet

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Estuary or ocean water surface elevation above NAVD 1988, feet, West Lock
Most recent instantaneous value: 1.47 07-12-2026   12:45 CDT
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Estuary or ocean water surface elevation above NAVD 1988, feet, West River
Most recent instantaneous value: 1.57 07-12-2026   12:45 CDT
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Estuary or ocean water surface elevation above NAVD 1988, feet, [East Difference]
Most recent instantaneous value: -0.04 07-12-2026   12:40 CDT
Graph of Estuary or ocean water surface elevation above NAVD 1988, feet, [East Difference]

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Estuary or ocean water surface elevation above NAVD 1988, feet, [West Difference]
Most recent instantaneous value: -0.10 07-12-2026   12:45 CDT
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Water velocity reading from field sensor, feet per second, Brazos River
Most recent instantaneous value: 0.85 07-12-2026   12:30 CDT
Graph of Water velocity reading from field sensor, feet per second

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Water velocity reading from field sensor, feet per second, East Lock
Most recent instantaneous value: -1.76 07-12-2026   12:40 CDT
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Water velocity reading from field sensor, feet per second, West Lock
Most recent instantaneous value: 0.49 07-12-2026   12:45 CDT
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Mean water velocity for discharge computation, miles per hour, [East Lock in MPH]
Most recent instantaneous value: -1.20 07-12-2026   12:40 CDT
Graph of Mean water velocity for discharge computation, miles per hour, [East Lock in MPH]

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Mean water velocity for discharge computation, miles per hour, [River in MPH]
Most recent instantaneous value: 0.578 07-12-2026   12:30 CDT
Graph of Mean water velocity for discharge computation, miles per hour, [River in MPH]

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Mean water velocity for discharge computation, miles per hour, [West Lock in MPH]
Most recent instantaneous value: 0.333 07-12-2026   12:45 CDT
Graph of Mean water velocity for discharge computation, miles per hour, [West Lock in MPH]

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