Six Mile River Water Quality Probe Data: Dissolved Oxygen and Temperature

A probe deployed by NIEA’s Freshwater Monitoring and Assessment team records Dissolved Oxygen (% Saturation) and temperature (°C) in the Six Mile River downstream of Castle Farm Bridge, Antrim. Data is recorded every 30 minutes and loaded to a public platform approximately every 30 days. The dataset is provided by OpenDataNI under the OGL-UK-3.0 license and was last updated on 2026-03-18.

Use Cases

• Modeling diurnal and seasonal dissolved oxygen cycles based on high-frequency 30-minute measurements.
• Analyzing the relationship between water temperature and oxygen saturation levels in a riverine environment.
• Monitoring for potential water quality events or sensor anomalies using provisional, real-time data streams.

Strengths

• High-frequency temporal resolution with measurements recorded every 30 minutes.
• Sensor accuracy is specified: dissolved oxygen +/- 5%, temperature +/- 0.1 degrees Celsius.
• Data collection is part of a long-term monitoring project, suggesting a continuous time-series.

Limitations

• Data is explicitly flagged as non-validated, provisional, and subject to revision.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

NIEA’s Freshwater Monitoring and Assessment team, published via OpenDataNI.

Collection Method

Collected via an optical DO sensor and temperature sensor deployed in the river.

Freshness

Data is updated approximately monthly; last platform update was 2026-03-18.

Geography

Six Mile River downstream of Castle Farm Bridge, Antrim, Northern Ireland.