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- Input Projects
- St. Clair Bathymetric Data Analysis
One-Dimensional Hydrodynamic Modelling of the St. Clair River using HEC-RAS
- Jason Giovannettone;
- A one-dimensional HEC-RAS model of the St. Clair River was created in order to address concerns involving a lowering of the water levels of Lake Huron resulting from morphological changes in the riverbed over the last 40+ years. The model was initially developed using measured bathymetry data from 2007, and calibrated to flows measured between 1996 and 2006. Sensitivity analyses were performed to determine the effects of near-shore interpolation, glacial isostatic adjustment and the effect of small-scale features in the upper river. Further tests were then conducted using previously collected bathymetric data, with a 2007 bathymetric dataset of the same resolution as an existing 1971 bathymetric dataset created, and the two compared.
- Viewable Data:
- St. Clair River Channel Bathymetry
- Upper St. Clair River Bathymetry
- St. Clair River Discharge Measurements (1962-2006)
- Additional Data and Information
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- Supporting Content
- Main Topics
- - St. Clair River
- Questions We Asked
- - What's causing the declining head difference?
- - Has St. Clair conveyance changed, and if so, what were the causes?
- Key Findings
- - St. Clair River has changed, accounting for 7-14 cm of total head decline
- - Evidence suggests St. Clair erosion is not ongoing, but causes remain unknown
- - Remedial measures should not be taken in the St. Clair