The United States of America, As Represented by the Secretary of the Interior

Blair Lewis Stringam

Brent W Mefford

Kathleen H Frizell

Clifford Alan Pugh

A continuous flow measurement recorder is provided for making water flow measurements in an open channel. An ultrasonic sensor obtains pressure head measurements upstream from a flume or weir located in the open channel. A central processing unit receives the head measurements from the sensor and calculates the water flow rate and the total flow. A liquid crystal display device displays the water flow rate and the total water flow calculated by a central processing unit. A common, portable, easy to install housing is used to house and protect the sensor, central processing unit, and display device.

Continuous flow measurement recorder and recording method

An automated turnout system is provided for controlling water flow through a turnout gate. The system determines the water flow parameters of the open channel and adjusts the size of the gate opening accordingly. The turnout system includes a flow measurement structure such as weir or flume, a water level sensor for measuring the water level at the flow measurement structure, a flow control gate, an actuator for adjusting the gate and a position sensor for determining the gate setting. A controller determines the proper gate setting based on inputs from the water level sensor and position sensor. The system provides a low cost, practical way to control outflow under varying canal water levels so as to improve irrigation operations.

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Littleton, CO, United States of America

Blair Lewis Stringam