This thesis relates fluvial morphology to those hydraulic conditions identified as being ideal for the rearing of juvenile Atlantic salmon. The suitability of flow depths and velocities were obtained from published habitat preference curves in order to compute the percent area (percent usable area - PUA) and average width (average usable width - AUW) of reaches providing ideal rearing habitat for juvenile Atlantic salmon at 2 typical summer discharge levels, in the Ste. Marguerite River. / By dividing reaches into smaller, morphologic unit's, in order to make the conditions more uniform, it was noticed that the wetted width and the amplitude of the vertical oscillation of riffles and pools (riffle-pool amplitude) provided the strongest hydraulic and morphologic relationships with the amount of usable habitat at the morphologic unit scale. Two regression models were produced to estimate the AUW of morphologic as a function of hydraulics and morphology, respectively. / The historic flood in July 1996 also provided an opportunity to examine some of the impacts of a large magnitude flood on channel morphology: localized bed and bank erosion, the destruction of riparian vegetation, the enhancement and destruction of individual bars, and localized changes in the hydraulic and morphologic character (induced by large sediment inputs).
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.20814 |
| Date | January 1998 |
| Creators | Dion, Kenneth Michael. |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Master of Science (Department of Geography.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 001609816, proquestno: MQ44157, Theses scanned by UMI/ProQuest. |
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