What is Vertical datum (mAOD/ODN)?

Reference surface for elevations and water levels; ensures consistent comparisons across gauges/models/maps. For example, Set all trigger levels in mAOD to match EA gauge metadata and model outputs.

Monitoring, Sensors & Telemetry

Vertical datum (mAOD/ODN)

Reference surface for elevations and water levels; ensures consistent comparisons across gauges/models/maps.

Example Usage

"Set all trigger levels in mAOD to match EA gauge metadata and model outputs."

Typical Units & Data

Datum name + elevation (m)

Related Keywords

mAOD Ordnance Datum Newlyn vertical datum elevation reference

Related Terms

Monitoring, Sensors & Telemetry

Hydrometric station

Instrumented site that measures hydrological variables (level, flow, rainfall) with logging and communications..

Monitoring, Sensors & Telemetry

River gauge

Location/instrument used to observe river stage (and often derive flow)..

Monitoring, Sensors & Telemetry

Stage (water level)

Height of water surface relative to a datum; primary variable for real-time monitoring..

Monitoring, Sensors & Telemetry

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Volume of water passing a cross-section per unit time; often derived from stage via a rating curve..

Monitoring, Sensors & Telemetry

Rating curve

Empirical relationship converting stage to discharge for a specific gauge cross-section..

Monitoring, Sensors & Telemetry

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Gauge that records rainfall by counting tips of a calibrated bucket, producing high-temporal-resolution totals..

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