The discharge in a rectangular channel 4 m wide is constant. A depth of 2.3 m is maintained by a 1.7-m-high contracted (both ends) horizontal weir (C = 1.86) with a 1-m-long horizontal crest.
This weir is to be replaced by an uncontracted horizontal weir that will maintain the same upstream depth. Determine the height of the weir if the discharge coefficient is based on Equation 9.10b.