A sluice gate is a gate that can be used to control the flow of water from body of water such a reservoir. The flow of water will be directly related to the hydrostatic pressure of the water above the gate and the cross-sectional area of the gate’s opening. To calculate the flow rate of water going through the gate equation 1 would be used.

**(Eq 1) ** $Q=z_2b\sqrt{\frac{2g(z_1-z_2)}{1-\left(\frac{z_2}{z_1}\right)^2}}$

Q = Flow Rate

b = gate width

g = gravitational constant

z = fluid height