Graduate Project

 

FishXing: evaluation of fish passage culvert model and comparision with Oregon Department of Forestry's compliance with fish passage and peak flow requirements at stream crossings Public Deposited

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https://ir.library.oregonstate.edu/concern/graduate_projects/5425kg90b

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  • FishXing (fish crossing), a computer aided stream crossing culvert model designed to analyze fish passage through culverts was compared with results of an Oregon Department of Forestry fish passage monitoring report. FishXing was created at Humboldt State University through sponsorship from the US Forest Service, USDA, Stream Team, Six Rivers National Forest, San Dimas Technology and Development Center, The Watershed Stewards Project, and the Federal Highway Administration. A comparison was made between results generated using FishXing with results found by ODF in the Oregon Department of Forestry (ODF): Compliance With Fish Passage and Peak Flow Requirements at Stream Crossings monitoring project. Stream crossing culvert data from the ODF fish passage study was used to run FishXing. The ODF monitoring project investigated 74 fish passage culvert installations that were constructed following approval of Written Plans filed with ODF in 1998. (An approved Written Plan is equivalent to a permit with ODF). Information about culvert installations was analyzed using FishXing. Four different trials were run for each culvert using both adult and juvenile Coho Salmon and Cutthroat trout using the FishXing software. Three trials used the default values for swimming abilities of adult and juvenile Coho salmon and adult Cutthroat trout. Juvenile Cutthroat trout were also included in the comparison; however, FishXing did not contain a default setting for them. Therefore, a velocity of2 feet per second (fps), the current target velocity for stream crossings on fish bearing streams in the state of Oregon, was used for juvenile Cutthroat trout (ODFW2). After making comparisons with the preliminary ODF results, further study was done to assess the accuracy of the calculations carried out within FishXing. This was based on Manning's equation (V=l.49/n*R213*S112) and other formulas given in the "Help" section of FishXing. Flow calculations were also compared with the Haestad Culvert Master program. The results produced using Manning's equation show no statistical difference from those generated using FishXing. Furthermore, there was an insignificant statistical difference found between FishXing-generated output and that of Culvert Master. Positive and negative attributes concerning FishXing are addressed at the end of the report.
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