Distribution of Hydraulic Head in the Keg River / Winnipegosis Hydrostratigraphic Unit

This map represents the distribution of hydraulic head in the Keg River / Winnipegosis hydrostratigraphic unit (HSU). It is a result of a geostatistical model which was constructed using publicly available pressure data from drillstem tests from oil and gas wells as well as industry monitoring wells accessed through environmental impact assessment reports.

The distribution of hydraulic head was mapped at a regional scale using many years of data, thus providing a good indication of hydraulic head within the unit rather than site-specific values. The uncertainty of prediction is depicted on an inset map, which shows the residual values (predicted value minus measured value) plotted at each location to indicate where underprediction or overprediction occurs. Two additional maps show the distribution of total dissolved solids and the results of water driving force analysis, respectively. The geometry and variable thickness of the Keg River / Winnipegosis HSU is shown on schematic cross-sections.