Measurement of water flow in open channels, Method 4.10: Measurement using flow gauging structures - End-depth method for estimation of flow in rectangular channels with a free overfall
明渠水流测量 方法4.10:使用流量测量结构进行测量.自由溢流矩形渠道流量估算的末端深度法
Specifies a method for the estimation of sub-critical flow of water in smooth, straight, rectangular prismatic open channels with a vertical drop and discharging freely. It is technically identical with and reproduced from ISO 3847:1977.