Reducing CO₂ emission from fossil fuels is crucial for the global aim of constraining greenhouse gas release into the atmosphere and the consequent adverse impact of the rising global temperature. One prominent approach for reducing the CO₂ influx concerns capturing and storing CO₂ in subterranean reservoirs. The properties of deep subsurface reservoirs that are appropriate for storing gasses require extensive scrutiny, including (i) the assessment of their reservoir characteristics, (ii) examinations of the nature of the caprock, and (iii) continuous monitoring of the movement of injected gas plumes. The sedimentary strata of Saskatchewan contains a number of reservoirs that are potentially good for Carbon Capture and Storage (CCS). The Late Ordovician Winnipeg Formation in Southern Saskatchewan constitutes a lower highly porous sandstone unit of the Black Island Member. Volumetric calculations of the Storage Space Capacity Potential of the sandstone indicate a subterraneous 974 km³ pore space. The porous sandstone unit is capped by a shale unit (Icebox Member). Thus, juxtaposition of these two lithologies makes the formation an excellent candidate for CCS.