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    USGS 08151500 Llano Rv at Llano, TX

      Stream Site

    DESCRIPTION:
    Latitude 30°45'04",   Longitude 98°40'10"   NAD27
    Llano County, Texas, Hydrologic Unit 12090204
    Drainage area: 4,197 square miles
    Contributing drainage area: 4,192 square miles,
    Datum of gage: 970.08 feet above   NAVD88.
    AVAILABLE DATA:
    Data Type Begin Date End Date Count
     Current / Historical Observations     (availability statement)    1996-07-01  2025-10-01  
     Daily Data
        Discharge, cubic feet per second  1939-09-17  2025-09-30  44336 
        Gage height, feet  1996-11-20  2025-09-30  23256 
     Daily Statistics 
        Discharge, cubic feet per second  1939-09-17  2025-08-03 31368 
        Gage height, feet  1996-11-20  2025-08-03 10352 
     Monthly Statistics 
        Discharge, cubic feet per second  1939-09  2025-08  
        Gage height, feet  1996-11  2025-08  
     Annual Statistics 
        Discharge, cubic feet per second  1939  2025  
        Gage height, feet  1997  2025  
     Peak streamflow 1935-06-14  2024-07-24  86 
     Field measurements 1939-05-16  2025-09-10  1161 
     Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP) 1967-10-18  2001-08-09  71 
     Water-Year Summary 2005  2024  20 
     Revisions  Loading...
    OPERATION:
    Record for this site is maintained by the USGS Texas Water Science Center
    Email questions about this site to Texas Water Science Center Water-Data Inquiries