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Select a state from the map to access real-time data. Current data typically are recorded at 15- to 60-minute intervals, stored onsite, and then transmitted to USGS offices every 1 to 4 hours, depending on the data relay technique used. Recording and transmission times may be more frequent during critical events.
River Stage Reference Frame Gauge Height Flood Stage Uses; NWS stage: 0 ft : 52 ft : Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps : Vertical Datum Elevation (gauge height = 0) Elevation (gauge height = flood stage) Elevation information source; NAVD88: 4.37: 56.37
These links provide summaries of approved historical daily values for daily, monthly, and annual (water year or calendar year) time periods. Peak-Flow Data. (30,184 sites) Annual maximum instantaneous peak streamflow and gage height. Field Measurements. (73,770 sites) Manual measurements of streamflow and gage height.
A streamgage is a structure installed beside a stream or river that contains equipment that measures and records the water level (called gage height or stage) of the stream. Streamflow (also called discharge) is computed from measured water levels using a site-specific relation (called a stage-discharge rating curve) developed from onsite water ...
The U.S. Geological Survey selects a suitable site along a river or stream and constructs a gage house to hold equipment that measures and records the height of the water surface (gage height or stage).
The data is for general information purposes ONLY and SHALL NOT be used in technical applications such as, but not limited to, studies or designs. All critical data should be obtained from and verified by the United States Army Corps of Engineers. The United States Government assumes no liability for the completeness or accuracy of the data ...
1889 - 1930 . USGS streamgaging began in 1889 with the establishment of the first streamgage (see why the USGS spelling is “gage” instead of “gauge”) on the Rio Grande in Embudo, New Mexico, where hydrographers were trained in new techniques to measure river flow.The earliest era of streamgaging helped assess the potential of the Nation’s water resources to support growth in the ...
