Groundwater modelling with Modflow 6 to support heat recovery from a shallow urban aquifer

• If we are to achieve targets to reduce
greenhouse gas emissions then lowenthalpy ground source heating may
provide a secure and low carbon form of
space heating.
• The measured shallow groundwater
temperatures under the City of Cardiff were
found to be 2°C warmer than predicted,
attributed to the subsurface urban heat
island effect.
• For geothermal resource mapping and
regulation, heat advection and the urban
groundwater flow system need to be
understood.
• Here, we develop a groundwater and
recharge model of the shallow aquifer in
Cardiff.