Water resource developments in Western Canada have utilized glacial meltwater spillway valleys as transport and storage reservoirs. The water diverted into such valleys undergoes chemical degradation. Diffusion studies have indicated that the mineral salts accumulated in the valleys since their formation would diffuse into the overlying water within a five years period; however, monitoring of the water quality of Blackstrap Reservoir for 22 years has shown no drastic reduction in mineral salt concentrations.Information gathered on the Blackstrap Reservoir indicated it was receiving groundwater which was a mixture of water from glacial deposits and from a bedrock aquifer. Numerical modelling indicated the groundwater flow was of low volume, but was high in Total Dissolved Solids. Modelling of salt transport into the Reservoir bottom by advection and diffusion from a layer of high pore-water salt concentration has indicated that tens or hundreds of years would be required before the reservoir bottom sediments would be flushed of the salt accumulated since the recession of the continental glaciers.
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- The Development of a Conceptual Model for the Degradation of Water Quality in Glacial Meltwater Channels used in River Diversion Schemes in Western Canada
S. L. Barbour
V. H. Remenda
- Springer Netherlands