Municipal Reservoir Water Liquid Level Measurement


When California’s Orange County Water District needed reliable level measurement of their precious reservoirs, they turned to Flowline. As water from the Colorado River transfers to the county, its retained and level monitored in their network of ponds. The municipality was using ultrasonic sensors that became erratic when the Santa Ana winds would blow floating vegetation against the pond bank, collecting under the sensor, and disrupting the acoustic signal return. For this reason, Flowline suggested the use of our coaxial guided wave sensors that house the antenna within a protective stainless pipe, separated from plant debris. The result is reliable water reservoir level measurement. Here, an EchoWave guided wave radar level transmitter is bracket mounted to a support structure near the pond bank. The IP65 sensor was easily set up using our WebCal configuration software. The 4-20 mA signal is connected to the SCADA for level measurement, control and alarms.