Rectangular Weir Flow Rate Calculator

Enter value and click on calculate. Result will be displayed.

Head on the Weir (h) :
m
Width of the Weir (b) :
m
Discharge Constant (Cd) :

Result :

Flow Rate :
Rectangular weir flow calculator  Utilize the advanced mechanics’ rectangular weir flow calculator to find the rate at which the water flows through the weir spillway in cubic meters per second.

What is a rectangular weir?
A weir is a form of obstruction installed across a river to modify its flow dynamics. It's often utilized for flood control, gauging water outflow, and ensuring rivers are suitable for navigation.

A rectangular weir is one of the simplest designs, essentially a flat barrier with a rectangular notch cut out from the top where water can flow over.

Other most commonly used types of weirs include v-notch and triangular weirs.

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