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Field Testing of LISST-SL in Western Washington: Results and Insights from USGS Workshop

The LISST-SL has been tested in Western Washington since its acquisition in 2009. This workshop presented findings from field testing conducted on three rivers, comparing LISST-SL results with FISP samplers using the EDI method for Q-measurement and velocity verification. A total of 15-20 depth-integrated samples were collected at specified depths and analyzed for Suspended Sediment Concentration (SSC) and particle size. Important lessons learned include handling tips for temperature-sensitive instruments and the need for additional weights on the sampler to ensure accurate measurements.

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Field Testing of LISST-SL in Western Washington: Results and Insights from USGS Workshop

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  1. LISST-SL Field Testing inWestern Washington Chris Curran, Jon Czuba, and Raegan Huffman USGS-Sequoia WebEx Workshop January 30, 2012

  2. Field Testing Field testing has occurred in western Washington since the LISST-SL was purchased in 2009.

  3. Swimming issue (needs more weight)

  4. LISST-SL Testing Plan Perform testing on three rivers Side-by-side comp. w/ FISP samplers EDI method for stationing ADCP for Q-meas. & velocity verifcation Point samples at 0.2, 0.6, 0.8 (P61) Depth-Integrated samples (D74) Aproximately 15-20 samples per site Samples analyzed for SSC and %fines

  5. SSC P61vs LISST

  6. Concentration, in mg/l ??? fine Particle Size Class coarse

  7. Lessons so far… Temperature sensitive instrument DON’T TOUCH BOTTOM of the river bed Need more weight on sampler Sequoia has been a good partner. New tail, new filter, new bleed port, etc.. Sensitive instrument – “temperamental” Requires sig. prep/post time in lab Some inconsistencies exist in units

  8. Puyallup River 1 2 3 4 5 FLOW

  9. 5 4 3 1 2

  10. 5 4 3 1 2

  11. 5 4 3 1 2

  12. 5 4 3 1 2

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