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ID: 2528

McBain, S., G. Hales, S. Howlin, and S. Pittman. 2021. Statistical evaluation of Trinity River WY 20092013 bed mobility and scour monitoring. Presentation provided to the Trinity River Restoration Program (TRRP) Science Symposium on 2021-12-02. McBain Associates, Arcata, California. Available:

Evaluate geomorphic relationships on alluvial bars as a function of peak flow events between Lewiston Dam and the North Fork Trinity River.
  • Bed mobility and scour monitoring has been conducted since 1991.
  • Monitoring specifically conducted to evaluate management objectives for ROD releases starting in 2006.
    • Surface bed mobility in Normal years (6,000 cfs)
    • Begin bed surface scour (scour>1D84thick in Wet years (8,500 cfs)
    • Cause deeper scour in Extremely Wet years (scour>2D84thick 11,000 cfs)
  • Historically monitored at rehabilitation projects, then…
  • Coordinated under IAP framework in 2009 under GRTS sampling scheme, alongside fisheries and riparian vegetation monitoring.

First Posted: 2021-12-09 01:01:59

Post Updated: 2022-01-03 22:16:44