Practice Question: Critical Depth for Rectangular Section

NCEES Civil PE Specification Hydraulics and Hydrology: Open-channel flow


Problem

A rectangular open channel carries water at a flow rate of  \(250 \ ft^3/s\).

The channel has a width (b) of 10 feet.

Calculate the critical depth (\(y_c\)) of the channel.

Assume a Manning's n value of 0.013 and a gravitational acceleration of \(32.2 ft/s^2\)
 

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