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USGS Streamgaging Program

USGS Streamgaging Program. Streamgage Operation. Gage height (not discharge) is collected every 15 minutes. Transmitted once an hour via GOES. Sites are measured approximately 9 times per year. Use measurements to determine stage-discharge relationship

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USGS Streamgaging Program

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  1. USGS Streamgaging Program

  2. Streamgage Operation • Gage height (not discharge) is collected every 15 minutes. • Transmitted once an hour via GOES

  3. Sites are measured approximately 9 times per year. • Use measurements to determine stage-discharge relationship • Also use measurements to determine “shifts” to the rating • Measurements are also used to aid in estimating flows. Streamgage Operation

  4. Traditional method: AA and pygmy meters HydroAcoustics

  5. Gaging “natural” channels in most cases. • Subject to change through time – scour, fill, vegetation growth • Records are given a rating as reviewed and approved (incrementally), excellent (+/- 5% - about 95% of the daily discharges are within 5% of the true value), good (+/- 10%) fair (> 15%), etc. Streamgage Operation

  6. Data is most accurate just before and after measurements. • Real-time data displayed on the web is provisional and subject to change. Streamgage Operation

  7. Daily data approved incrementally during the year. • Published after end of WY. Streamgage Operation

  8. Threshold notification system. • Subscribe on station page. • Sends email or text. • Hourly or daily. • Works for: • Stage • Discharge • QW parameters WaterAlert

  9. Began in late 1800’s (1889 – Weber R. at Gateway) • 153 Active streamgages • 618 Historic streamgages Utah Data Network replace with updated pic.

  10. Utah Department of Natural Resources • Division of Water Rights • Division of Water Resources • Utah DEQ • Central Utah Water Conservancy District • Bear River Commission • NSIP • U.S. Bureau of Reclamation • BLM • 13 Local entities Cooperators

  11. Questions?

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