Resource consumption measurement system and method

A system, method, and device may be used to provide irrigation water consumption data. An irrigation flow controller may include an irrigation valve interface and controller that communicates with irrigation valves to open and close the valves. An identification module identifies one or more time periods when water consumption is not likely to occur or is likely minimal and a calibration module opens and closes the irrigation valves according to calibration schedule data. A timestamp module may identify a calibration valve open time and a calibration valve close time for the irrigation valves and a computational module may calculate a computed flow rate for the irrigation valves based on the calibration valve open time, the calibration valve close time, and the actual water usage data that occurred between the calibration valve open time and the calibration valve close time. The computed flow rate may be utilized to identify anomalies and provide notifications thereof.