Non Contact Radar Flow Meter with advanced millimeter wave planar radar antenna to measure water level, velocity and flow rate of the section according to the built-in hydraulic model and algorithm. It is mainly composed of water flow meter and water level meter. The flow meter is used to collect the surface flow rate of the fluid and calculate the average flow rate of the water section through the model. The measurement process is not affected by ambient temperature, water vapor pressure on the water surface, air dust, silt, floating objects and sediments. An ideal non contact radar device for rivers, dams, open channels and canals. It is a real-time flood monitoring system radar flow meter.