hydrometrische

Hydrometrische, or hydrometric in English, denotes methods and data related to hydrometry—the measurement of water quantities and properties. The term is used in Dutch and German-speaking contexts to describe work that characterizes water levels, flows, and related hydrologic variables in rivers, lakes, reservoirs, and engineered channels.

Hydrometry relies on a range of instruments and techniques. Stage is commonly recorded with staff gauges, stilling wells, and pressure transducers. Discharge is estimated through direct methods such as weirs and flumes or indirect methods such as velocity-area measurements and acoustic Doppler devices. Modern systems employ radar or ultrasonic level sensors, remote sensing, and telemetry to provide continuous data streams. Data are linked to stage-discharge relationships, hydrological models, and gauge networks.

Applications include flood forecasting and warning, water resources planning, irrigation management, dam safety, environmental monitoring, and climate research. Hydrometric networks aim to provide accurate, timely, and comparable data for decision makers and researchers.

Standards and practice are governed by international guidelines and national programs. Organizations such as the World Meteorological Organization (WMO) and various standards bodies publish protocols for measurement methods, metadata, calibration, and quality control to ensure consistency and comparability of hydrometric records.