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dc.contributor.authorBlank, Matt
dc.contributor.authorDockery, David
dc.contributor.authorPohl, Christina
dc.date.accessioned2019-06-18T17:59:41Z
dc.date.available2019-06-18T17:59:41Z
dc.date.issued2019-03
dc.identifier.urihttp://hdl.handle.net/11122/10421
dc.description.abstractThe purpose of this research was to evaluate how characteristics of hydraulic structures, such as slope or size, used at crossings over waterways relate to operation and maintenance (O&M) effort, fish passage, and stream function. Data on O&M concerns, fish passage concerns, and crossing characteristics were collected from 45 road-stream crossings in Prudhoe Bay, Alaska, during lower and higher water periods in both 2014 and 2015 (four events total). Logistic regression and generalized mixed models were used to examine relationships between O&M effort (response) and five explanatory variables. For all data from all years combined, there were no observable associations among O&M and culvert type or constriction ratio. However, lower constriction ratios were observed for sites with O&M needs in the June 2014 data set. The proportion of sites with both fish passage and O&M concerns was 0.52; comparatively, the proportion of sites with no fish passage concern but with O&M concern was 0.35.en_US
dc.language.isoen_USen_US
dc.subjectculvertsen_US
dc.subjectoperation and maintenanceen_US
dc.subjectcost-benefiten_US
dc.subjectfish passageen_US
dc.subjectstream functionen_US
dc.titleSIZING HYDRAULIC STRUCTURES IN COLD REGIONS TO BALANCE FISH PASSAGE, STREAM FUNCTION, AND OPERATION AND MAINTENANCE COSTen_US
dc.typeTechnical Reporten_US
refterms.dateFOA2020-03-05T13:18:53Z


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