INDEX 



Adverse slope, 65, 86 



backwater methods for, 70, 96, 108 

 Air demanded by hydraulic jump, 44 

 Alternate depths, 19, 27 



in non-rectangular channels, 39 



in transitions, 121 

 Analysis of flow problems, 84 

 Area of flow, 1 



computation of, for step method, 97 

 Areas of circular channels flowing partly 

 full, 12, 42 



Backwater curves, 60 

 Bresse's function for, 67 

 cases of, 66 



choice of friction coefficient for, 99 

 choice of step method for, 96 

 classification of, 64 

 direction of computations for, 94 

 graphical method for uniform channels, 



75 

 Grimm's method for, 103 

 in channels having adverse slope, 70, 



96, 108 

 in frictionless rectangular channels, 60 

 in horizontal uniform channels, 70, 83, 



108 

 in uniform channels, 63, 75, 108 

 integration methods for, 63, 70, 77, 83 

 Leach's diagram for, 107 

 past islands, 109 

 point of control for, 70 

 selection of Chezy's C for, 71 

 standard step method for, 96 

 step method for uniform channels, 108 

 step methods for, 94 

 choice of, 96 



starting elevation not known, 95 

 storage under, in flood routing, 145 

 trial-and-error computations, 96 

 BakhmetefT, B. A., 29, 31, 77, 80 

 Banking, for bends with high-velocity 

 flow, 119 



Bazin, 52 

 Beebe, J. C, 28 

 Belanger's critical flow, 23 

 Bernoulli's theorem, applied to rectan- 

 gular open channel, 16 



for backwater curves, 65, 108 

 Bidone, 29 

 Bingham, W. F., ii 

 Blue, F. L., 113, 114 

 Bore, tidal, 52, 58 



Break in grade of uniform channel, 84 

 Bresse's function, 63 



illustrative example, 73 

 Bridge piers, as channel obstructions, 125 



D'Aubuisson formula for, 129 



Nagler formula for, 127 



Cases of the backwater curves, 66 



Changes in cross section, 120 



Changes of grade, 84 



Channel connecting two reservoirs or 

 lakes, 91 



Channel entrance, 91 



Channel in which hydraulic radius re- 

 mains constant, 49 



Channel obstructions, 125 



Channel of critical flow at all stages, 48 



Chezy's C, 4 

 selection for backwater computations, 



71 

 Choice of friction coefficient for back- 

 water computations, 99 

 Choice of step method for backwater 



computations, 96 

 Circular channels, partly full, area, 12, 42 

 critical flow, 42 

 hydraulic radius, 12 

 hydrostatic pressure, 42 

 surface width, 42 

 uniform flow, 12 

 Circular conduit, hydraulic jump in, 44 

 Circular transition curves for bends, 

 119 



147 



