proposed developments) nominated head boundaries to represent permanent water courses Powder MODFLOW Regional groundwater Dual-phase flow, coal dual porosity and anisotropy not None Myers (2009) Basin, model included. Geomechanical effects assumed to have no Montana, US impact (1240 km2 domain) Coal not modelled independently of coal measures Subregional constant head boundary condition Cumulative impacts not assessed used to represent CSG Implicit (uncoupled) groundwater–surface water well field interaction
proposed developments) nominated head boundaries to represent permanent water courses Powder Basin, Montana, US MODFLOW Regional groundwater model (1240 km2 domain) Subregional constant head boundary condition used to represent CSG well field Dual-phase flow, coal dual porosity and anisotropy not included. Geomechanical effects assumed to have no impact Coal not modelled independently of coal measures Cumulative impacts not assessed Implicit (uncoupled) groundwater–surface water interaction None Myers (2009)
csg-modelling-groundwater-impacts.docx