PROBLEMS 



37 



PROBLEMS 



SOL Fill in the blank spaces in the following table, in which each horizontal line 

 represents a hydraulic jump in a frictionless rectangular channel with horizontal 

 bottom. 



302. If the head on the smooth, rounded crest of a dam is 3 feet, what tail- 

 water elevation will be necessary to insure the formation of a hydraulic jump on a 

 level apron 20 feet below the crest of the dam? If this tailwater elevation should 

 happen not to coincide with the natural water-surface elevation of the stream, what 

 changes in the spillway might be made to raise or lower it? 



