Cardiff Urban Groundwater Temperature Measurements, 2018-2024

2018-2024 groundwater temperature data from a shallow urban aquifer in Cardiff, Wales, UK. The dataset comprises just over 3.5 million measurements taken every 30 minutes from sensors in 54 boreholes at depths between 1.5m and 18.9m. Monitoring was undertaken by the British Geological Survey to address knowledge gaps regarding the subsurface Urban Heat Island.

Use Cases

• Modeling the subsurface Urban Heat Island effect based on temperature measurements from a shallow aquifer.
• Assessing geothermal heat recovery and storage potential based on groundwater temperature time-series.
• Analyzing seasonal and diurnal thermal variations in urban groundwater based on 30-minute measurement intervals.
• Investigating the thermal impact of made ground and bedrock layers based on sensor placement in multiple geological units.

Strengths

• Contains just over 3.5 million temperature measurements, providing high temporal density.
• Data spans six years (2018-2024), offering a multi-year time-series for analysis.
• Measurements are taken from 54 boreholes at varying depths, providing spatial and vertical coverage.
• Uses a defined spatial reference system (OSGB 1936 / British National Grid).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to a single urban area in Wales.

Provenance

Source

British Geological Survey (BGS)

Collection Method

Temperature sensors installed in boreholes monitoring a shallow Quaternary aquifer, made ground, and Triassic Mercia Mudstone.

Time Range

2018-2024

Freshness

Last updated 2026-04-09 08:26:25.890558; freshness should be verified.

Geography

Urban area of the City of Cardiff, Wales, UK.