Municipal Reservoir Water 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.

Guided Wave Radar

Flowline EchoWave Guided Wave Radar.

Here, an EchoWave guided wave radar level transmitter is bracket mounted to a support structure near the pond bank. The IP68 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.

If you want more information on how reliable reservoir water level measurement can work for you, please call Ryan Herco’s knowledgeable sales staff at 800-848-1141.


  • EchoWave® LG10 / LG11 Guided Wave Radar Level Transmitter Data Sheet