LIST OF TABLES 



TABLE PAGE 



Cost of Survey near Chicago I. 19 



Maximum Rate of Rainfall at Washington, D. C II. 35 



Intensity for 5-, 10-, and 6o-minute Intervals III. 35 



" Rates of Rainfall in Eastern United States IV. 36 



Equations of Rainfall Curves, Savannah, Ga V. 48 



Rainfall Discharged by Sewers, Rochester, N. Y VI. 58 



Rainfall and Stream-flow, Sudbury River, Mass VII. 62 



Percentage of Roof, Street, and Yard Surface per Acre VIII. 72 



Classification of Street Surfaces IX. 74 



Relation between Population and Impervious Surface X. 74 



Different Kinds of Surface, Ithaca, N. Y XI. 75 



Rates of Increase of Population, 1840-1880 XII. 98 



1910 XIII. 100 



Consumption of Water in Small Cities of United States XIV. no 



Large Cities of United States XV. in 



" " Boston, etc., by Meter ,. XVI. 112 



Manhattan by Meter XVH. 113 



Metered Water for Trade and Mechanical Purposes . . f XVIII. 116 



Water Not Accounted for by Reasonable Use XIX. 118 



Consumption of Water in terms of First Faucet XX. 126 



Sewer-gagings at Des Moines and Elsewhere XXI. 130 



Velocities at which Dragging Begins XXII. 156 



Specific Gravity of Pieces Moved by Flowing Water XXIII. 158 



Weisbach's Values for c XXIV. 167 



Comparative Valeus of "c" by Formulae of Weisbach and Kutter XXV. 186 



Rhoads- Williams Automatic Siphons XXVI. 219 



Relation between Velocity and Grade 6-inch Lateral XXVII. 228 



Flush-waves, Green St. Sewer XXVIII. 236 



" Cayuga St. Sewer XXIX. 236 



" Aurora St. Sewer XXX. 237 



" First St. Sewer XXXI. 237 



Distances and Slopes between Manholes, Ithaca XXXII. 238 



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