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Suspended Sediment Surrogate Testing in Idaho

Suspended Sediment Surrogate Testing in Idaho. Molly Wood, P.E. USGS Idaho Water Science Center. Kootenai River, ID – multiple locations. Snake River nr Anatone , WA. Clearwater River at Spalding, ID. 6 surrogate gages w/acoustics. Boise River near Parma, ID. Gages. Results.

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Suspended Sediment Surrogate Testing in Idaho

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  1. Suspended Sediment Surrogate Testing in Idaho Molly Wood, P.E.USGS Idaho Water Science Center

  2. Kootenai River, ID – multiple locations Snake River nr Anatone, WA Clearwater River at Spalding, ID 6 surrogate gages w/acoustics Boise River near Parma, ID

  3. Gages

  4. Results • Multi-frequency acoustics, laser diffraction, turbidity • Testing since 2007 • Acoustics – best surrogate technology • 1.5 to 3MHz generally work best • R2 ranges 0.87 to 0.93 • Total, fine, and coarse fractions • LISST: R2 = 0.62 (when working) • Turbidity: R2 = 0.65 – 0.92 • Improvement over traditional transport curves

  5. Real-Time Estimates on the Web Automation is key! GUI for computations, Written by Gary Wall, NY WSC Concentration June 1-9, 2011

  6. Moving forward • Need for automated processing software • Ability to market real-time sediment • Agreeing on methodology: • SNR vs Signal Strength • # of cells needed (and SDI-12 limitations) • Negative attenuation • Voltage regulation

  7. Questions?

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