An institution or facility that monitors and analyzes hydrological data such as water level, flow rate, and sediment content of rivers, lakes, or reservoirs; short for [[水文地质观察站|水文地質觀察站|shui3 wen2 di4 zhi4 guan1 cha2 zhan4]].

the scientific study of the properties, distribution, and effects of water on the earth's surface

facility established to monitor and record data regarding water levels, flow rates, sediment content, and geological factors of water bodies such as rivers, lakes, or reservoirs

expert in the study of the movement, distribution, and quality of water on earth and other planets

the continuous movement of water on, above, and below the surface of the Earth, involving processes such as evaporation, condensation, and precipitation