Abstract
A groundwater supply of 600 imperial gallons per minute (27301/min) was required at Landis, Saskatchewan, for development of an underground gas storage cavern with 1.19 × 106 barrel capacity. The cavern was to be developed by dissolving and removing the salts of the Middle Devonian Prairie Evaporite Formation the top of which is 3940 ft (1201 m) below ground surface. It was found that the most productive aquifers were in the glacial drift. Three intertill aquifers were identified. The presence of four till stratigraphic units was used as a basis for the interpretation of the groundwater hydrology. Three pumpwells were completed. Tests and analyses include aquifer coefficients such as transmissivity, storage coefficients, vertical permeability, and estimates of safe yields. A monitoring system was also established to measure the effect of high production on local domestic wells. This project demonstrated the value of establishing a formal stratigraphic system for interpretation of aquifer properties in glacial deposits.
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