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February 1, 1992North American Journal of Fisheries Management

Incidence and Causes of Physical Failure of Artificial Habitat Structures in Streams of Western Oregon and Washington

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Authors

CFChristopher A. FrissellRNRicardo Kenji Nawa

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Overview

Randomized evaluation finds high rates of physical failure in artificial fish habitat structures, suggesting need for better design.

Key Points

  • The aim is to evaluate the rates and causes of physical failure of artificial habitat structures to improve fishery management.
  • Evaluated 161 fish habitat structures across 15 streams in southwest Oregon and southwest Washington.
  • Assessed functional impairment and failure following recurrent flooding events.
  • Compared damage rates from 46 projects using historical data.
  • Median failure rate of structures was 18.5%, with a damage rate of 60%.
  • High rates of damage were found in low-gradient segments with recent watershed disturbances.
  • Estimated 5-10 year damage rates varied significantly, with a median of 14%.

Cite This Study

Frissell et al. (1992) studied this question.

synapsesocial.com/papers/6a10d11392dd5d7437ee3287https://doi.org/10.1577/1548-8675(1992)012<0182:iacopf>2.3.co;2
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