| The standardization of methods and instrumentation relating to techniques for hydrometric determinations including: - a) velocity, stream flow, level, load transport, erosion, sedimentation, and ice phenomena; in open channels, reservoirs, lakes and seas; - b) precipitation, snow cover and evapotranspirration; - c) infiltration, - d) groundwater, soil moisture and soil frost; - e) standards for data exchange. |
