本文件规定了测量站水位流量关系的确定方法。 它规定了基于足够数量的流量确定水位流量关系的精度 流量测量，包括相应的阶段测量。 本文件考虑了稳定和不稳定通道，并简要描述了影响 关于从岸内流到岸外流过渡的水位流量关系，转换控制， 可变回水和滞后。双轨距站流量的测定方法， 未详细描述超声波速度测量站和其他复杂的额定曲线。 购买本文件时可获得的所有当前修订均包含在购买本文件中。

This document specifies methods of determining the stage-discharge relationship for gauging stations. It specifies an accuracy for defining the stage-discharge relationship based on a sufficient number of discharge measurements, complete with corresponding stage measurements. This document considers stable and unstable channels and includes brief descriptions of the effects on the stage-discharge relationship of the transition from inbank to overbank flows, shifting controls, variable backwater and hysteresis. Methods of determining discharge for twin-gauge stations, ultrasonic velocity-measurement stations and other complex rating curves are not described in detail.All current amendments available at time of purchase are included with the purchase of this document.