Stage (water level)
Height of water surface relative to a datum; primary variable for real-time monitoring.
Example Usage
"Alert when stage exceeds 2.85 mAOD at the upstream gauge."
Typical Units & Data
mAOD (or m)
Related Keywords
Related Terms
Hydrometric station
Instrumented site that measures hydrological variables (level, flow, rainfall) with logging and communications..
Monitoring, Sensors & TelemetryRiver gauge
Location/instrument used to observe river stage (and often derive flow)..
Monitoring, Sensors & TelemetryDischarge (flow rate)
Volume of water passing a cross-section per unit time; often derived from stage via a rating curve..
Monitoring, Sensors & TelemetryRating curve
Empirical relationship converting stage to discharge for a specific gauge cross-section..
Monitoring, Sensors & TelemetryVertical datum (mAOD/ODN)
Reference surface for elevations and water levels; ensures consistent comparisons across gauges/models/maps..
Monitoring, Sensors & TelemetryRain gauge (tipping bucket)
Gauge that records rainfall by counting tips of a calibrated bucket, producing high-temporal-resolution totals..
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