Probe Metrics: High-Frequency Dissolved Oxygen and Temperature in the Upper Bann River

A long-term, high-frequency water quality monitoring project records Dissolved Oxygen (% saturation) and temperature (°C) in the Upper Bann River at Portadown. Data is collected every 30 minutes by a field probe deployed by NIEA’s Freshwater Monitoring and Assessment team and is loaded onto a public platform approximately every 30 days. The dataset is provided by OpenDataNI under an OGL-UK-3.0 license and was last updated in March 2026.

Use Cases

• Modeling diurnal and seasonal dissolved oxygen cycles based on high-frequency, 30-minute interval data.
• Analyzing temperature-dependent oxygen saturation dynamics in a freshwater river system.
• Detecting potential sensor malfunctions or environmental anomalies based on provisional, non-validated data streams.
• Assessing long-term water quality trends for the Upper Bann River as part of a freshwater monitoring project.

Strengths

• Data is recorded at a high frequency of every 30 minutes, enabling fine-grained temporal analysis.
• Sensor accuracy is specified: dissolved oxygen measurements have an accuracy of +/- 5% and temperature to +/- 0.1°C.
• The dataset is part of a long-term monitoring project, suggesting continuity and temporal depth.

Limitations

• Data is explicitly noted as non-validated, provisional, and subject to revision, which may affect reliability.
• Row count and total temporal coverage are unknown, limiting suitability assessment for large-scale modeling.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

Northern Ireland Environment Agency (NIEA) Freshwater Monitoring and Assessment team, via OpenDataNI.

Collection Method

Collected by a deployed field probe with optical DO and temperature sensors.

Freshness

Data is loaded onto the public platform approximately every 30 days. The metadata was last updated on 2026-03-18.

Geography

Upper Bann River at Portadown, Northern Ireland.