INDEX 



149 



Houk, Ivan E., 5 

 Hoyt, J. C, 103 

 Hsing, P. S., 44 

 Hydraulic bore, 52, 58 

 Hydraulic elements, of circular sections, 

 12,42 

 reduction of data for, 97 

 Hydraulic radius, 2 



computations for, 97 

 Hydraulic jump, chart for rectangular 

 channels, 57 

 moving, 52 



stationary, in non-rectangular chan- 

 nels, 43 

 in rectangular channels, 24 

 in sloping channels, 34 

 table for depth after, 45 

 Hydrostatic pressure, below apron of 

 jump, 33 

 in circular cross sections, 42 

 variation of, in expanding tube, 17 



I, Fu-Te, 135 



Impact, 21, 24 



Inflow hydrograph, 134 



Initial elevation for backwater curves, 95 



Instability of water surface near critical 



depth, 22, 28 

 Integration methods for backwater curves, 



63, 70, 77, 83 

 Iowa River, 113, 114 

 Ippen, A. T., 116-120 

 Islands, backwater curves past, 109 



Jeffreys, Harold, 72 

 Jump-height rating curve, 33 



Keulegan, G. H., 72 

 Kindsvater, C. E., 44 

 King, H. W., 4 

 Knapp, R. T., 116-120 

 Kutter-Ganguillet formula, 4 



use in backwater computations, 71, 76 

 80, 101, 108 



values of " n " for, 5 



Lakes, channels connecting, 91 



routing problems, 133 

 Lancefield, R. L., 113, 114 

 Lane, E. W., 33, 44, 127 

 Law of continuity, 25, 53, 135 

 Leach, H. R., 96, 107 



Leach's diagram, 107 



Length of the hydraulic jump, 28 



Leonardo da Vinci, 32 



Level-pool routing, with invariable stage- 

 discharge relation, 133 

 with variable stage-discharge relation, 

 142 



Location of the hydraulic jump, in non- 

 rectangular channels, 44 

 in rectangular channels, 31 



Logarithmic plotting of hydraulic ele- 

 ments, 80, 102 



Loss of head in the hydraulic jump, 31 



Low-velocity flow past obstructions, 126 



Low- velocity flow around bends, 110 



Manning's formula, 4 

 tables, for trapezoidal channels, 8, 9, 10 

 11 

 for partly full circular channels, 12 

 for round-bottomed channels, 13, 14 

 use, with Bresse's function, 71 

 with standard step method, 99 

 Matzke, A. E., 29, 31 

 Miami Conservancy District, 5, 29, 135 

 Mild slope, 64, 85 

 Momentum coefficient, 47 

 Momentum law, applications of, 25, 54 

 Mononobe, Nagaho, 75, 77 

 Mountainous country, channels in, 72 

 Moving hydraulic jump, 52 

 chart for, 57 



Nagler, F. A., 127-130 

 Nagler formula, 127 

 Neutral depth, see Normal depth 

 Non-uniform flow, 2 



Non-uniform velocity distribution, effect 

 on momentum, 46 



kinetic energy, 47 

 Normal depth, 64 



by Chezy's formula, 64 



by Manning or Kutter formula, 6 

 Normal fall, in Grimm's method, 104 



Obstructions to channel flow, 125 

 Outflow hydrograph, 134 



Parting stop, 137 



Patterson, G. W., -72 



Pile trestles, as channel obstructions, 125 



