water flow rate in a river

Thread Starter


Joined Feb 20, 2010
pls i am trying to design /construct a device that measures volume flow rate of water in a river every one hour. this device should include a memory storage and a digital display for the values measured. the storage should be such that the values optained one hour ago can still be viewed now.


Joined Nov 9, 2007
You need to construct a speciallly shaped river channel at the point of flow measurement.

Normally the height of flow above a sunken weir is measured.

So you need to design a depth gauge.

Are you designing the electrical engineering or the civil engineering?

The process of flow measurement is called river gauging.


Joined Dec 19, 2007
Flow "volume" requires a cross-sectional profile of the river at the point of measurement, as well as the flow rates at various depths. Our Geology/Biology field teams use a flow profiler with a differential GPS to record the data, as the sensor is moved across a river in a boat . $$$$$