Data collection at U.S. Geological Survey Streamgages
The first USGS gaging station was established on the Rio Grande River near Embudo, New Mexico in 1889.
Embudo trainees immediately dispersed to collect data in other western locations
The Embudo Legacy Data collected using nationally consistent, prescribed standards
The U.S. Geological Survey currently collects streamflow data at over 7,000 sites
Historic data from over 18,500 locations can be analyzed with confidence
The basic piece of data collected at gaging stations is Stream Stage
Stage can be sensed using STILLING WELLS
Stage can also be sensed using PRESSURE TRANSDUCERS
Stage is usually:
Most users of streamflow information need to know the discharge of the stream
PPT Slide
Discharge measurements are used to develop rating curves
Discharge must be measured at all stages
Discharge measurements during high stages are particularly important
To maintain ratings, discharge must be measured regularly
Datum must be checked regularly
All gaging station data are checked and reviewed
Data Dissemination-- Historical Data
Electronic Data Dissemination-- Historical Daily-Mean Discharge
Electronic Data Dissemination-- Historic Peak-Flow Data
Data Dissemination-- Real-Time
Data dissemination-- Real Time
Data Dissemination-- Live Pictures of Gaged Channels
Data from USGS gaging stations can be used to meet a variety of needs
Current needs
Long-term needs
USGS continues to pursue use of new technology
The End
Email: tom.dietrich@noaa.gov
Home Page: http://www.nws.noaa.gov/os/hod
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