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Rio Grande at RGV C721

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    Continuous water quality monitoring data on this page is provisional until validated. For the current validation status of this station, please go to USGS 0087361 / TCEQ CAMS 721

  • State: Texas
  • County: Brewster
  • City: Big Bend
  • Address: Daniels Ranch Picnic Area
  • Site coordinates:
    • Latitude: 29° 11' -0.00" North (+29.183333°)
    • Longitude: 102° 58' 30.00" West (-102.975000°)
    • Elevation: 549 m (1801 ft)
  • Maintained by: USGS for TCEQ
Area Map Overall site view Street level Map
Left Bank
Right Bank
Current Measurements
Monthly Summary Report
Yearly Summary Report
  • Real-time monitoring since: Wednesday, June 8, 2005
  • Current status: Active
  • Continuous monitors located at this site:
    • Water Quality
  • Parameters currently being monitored:
    • Water parameters:
      • Surface Water Temperature
      • Water Flow Rate
      • Gage Height
      • Surface Specific Conductance
      • Surface Dissolved Oxygen
      • Surface Water pH
  • Parameters that have been monitored but are no longer active:
    • Meteorological parameters:
      • Precipitation
    • Water parameters:
      • Water Velocity
      • Sample Depth
      • Water Level

PLEASE NOTE:  This data has not been verified by the TCEQ and may change. This is the most current data, but it is not official until it has been certified by our technical staff. Data is collected from TCEQ ambient monitoring sites and may include data collected by other outside agencies. This data is updated hourly. All times shown are in local standard time unless otherwise indicated.

Following EPA reporting guidelines, negative values may be displayed in our hourly criteria air quality data, down to the negative of the EPA listed Method Detection Limit (MDL) for the particular instrument that made the measurements. The reported concentrations can be negative due to zero drift in the electronic instrument output, data logger channel, or calibration adjustments to the data. Prior to 1/1/2013, slightly negative values were automatically set to zero.