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Nrth Concho at Johnson Dam C744

Find Site:       
  • State: Texas
  • County: Tom Green
  • City: San Angelo
  • Address: Concho River at Johnson Dam downstream of Oakes Rd.
  • Site coordinates:
    • Latitude: 31° 27' 32.00" North (+31.458889°)
    • Longitude: 100° 25' 57.00" West (-100.432500°)
    • Elevation: 549 m (1801 ft)
  • Deactivated (Deactivated Mar 24, 2011)
Area Map Overall site
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Street level Map
Left Bank
Right Bank
Historical Measurements
Monthly Summary Report
Yearly Summary Report
  • Real-time monitoring since: Wednesday, October 17, 2007
  • Current status: Deactivated Thursday, March 24, 2011
  • Parameters that have been monitored but are no longer active:
    • Meteorological parameters:
      • Precipitation
    • Water parameters:
      • Surface Water Temperature
      • Sample Depth
      • Surface Specific Conductance
      • Surface Dissolved Oxygen
      • Surface Water pH

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.