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- Dependent Projects
- St. Clair 1D HEC-RAS Modelling
- St. Clair 2D RMA2 Modelling
Statistical and Spatial Analysis of Bathymetric Data for the St. Clair River 1971-2007
- David Bennion;
- Bathymetric data collected in the St. Clair River spanning 36 years were analyzed to address questions concerning ongoing geomorphic processes in the river. Comparisons of recent high-resolution datasets covering the upper river indicate a highly variable, active environment. Although statistical and spatial comparisons of the datasets showed some changes to channel size and shape have taken place, uncertainty associated with various survey methods and interpolation processes limited the statistical certainty of the results. The methods used to spatially compare the datasets are sensitive to small variations in position and depth that are within the range of measurement and interpolation uncertainty associated with the datasets. Data characteristics such as measured point density and the range of values surveyed can also influence the results. With due consideration of these limitations, apparently active and ongoing areas of elevation change in the river were mapped and discussed.
- Additional Data and Information
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- Supporting Content
- Main Topics
- - St. Clair River
- Questions We Asked
- - Has St. Clair morphology changed since 1962, what initiated it, and when?
- - What's causing the declining head difference?
- 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