Maine River Water Quality Probe Data with Dissolved Oxygen and Temperature

Northern Ireland's Maine River downstream of the M2 Bridge is monitored by a field probe deployed by the NIEA Freshwater Monitoring and Assessment team. The probe records Dissolved Oxygen (% Saturation) and temperature (°C) every 30 minutes as part of a long-term, high-frequency water quality monitoring project. Data is provisional, loaded publicly approximately every 30 days, and last updated on 2026-03-18.

Use Cases

• Modeling diurnal and seasonal dissolved oxygen cycles based on high-frequency 30-minute measurements.
• Analyzing water temperature trends and their correlation with environmental factors.
• Developing anomaly detection systems for sensor malfunction or water quality events based on provisional data streams.
• Calibrating or validating hydrological models using real-time sensor data from a specific river location.

Strengths

• Data is recorded at a high frequency of every 30 minutes.
• Sensor accuracy is specified: temperature +/- 0.1°C and dissolved oxygen +/- 5% saturation.
• Probe maintenance and data download occur on a monthly schedule.

Limitations

• Data is explicitly noted 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 by an in-situ field probe with optical DO and temperature sensors.

Freshness

Data is loaded onto the public platform approximately every 30 days; last metadata update was 2026-03-18.

Geography

Maine River downstream of the M2 Bridge, Northern Ireland.