XXXIV. 



J. I. HAYCROFT. 



Author. 



Formula. 



Authority and Eemarks. 



Col. Dickens 



Q=825M^=100CM* 



Jackson's Hydraulic Manual 



>5 



Q=27CM* 



Fanning's Hydraulic Engineering 



C = 8-25 



Eyves 



Q=CM§ 



Wilson's Irrigation Engineering 

 C = 400 to 500 in flat country 

 = 650 in hilly country with 







maximum rainfall 



Fanning 



Q=200 M& 



Fanning's Hydraulic Engineering- 



C. 0. Burge 



q 1300 M 2 

 ^ (Length of Fetch) 3 



Prof. Kernot, A.A.A. Science, 1888 



Dredge 



»> 5> 



Fanning's Hydraulic Engineering 



>» 



?J >? 



Patton's Civil Engineering- 



Jackson 



Breadth 3 

 ~ C Length A 

 181 x Area in sq. chains 

 y 1800 (Length in chains) 1 • 2 3 



Prof. Kernot, A.A.A. Science, 1888 



Steane 



Trans. Eoyal Soc, Victoria, 1887 



Craig 



Q=440 BN hyp. log.^- 



Min. of Proc. Inst. C.E., Vol. 80 





B = Width of Catchment in miles 







L = Length ,, ,, 







N = l-16 



O'Connell 



Q=-45-796+ (2097-28 x 457-96 A) 4 



Patton's Civil Engineering 



McComb 



Q=5-29375 A^ 



)5 >5 )) 



Biirkli Ziegler 



Q=CES^ A* 



"Trautwine." S = Slope in feet 

 per 1000. C = -31to-75 



McMath 



Q=CBS i At 



Trans. Am. Soc. C.E., Vol. XVI. 



>» 



Q=2-488 ESs As 



Patton's Civil Engineering 



Adams 



q=ace('^^ )tV=ceI aI ST2 



Q=ACk( ^) i =CE * A? S * 

 Q=ACb(^ )=5-03 CEA^ 



C = 1-035 



S = Sine of slope 



Hawksley 



Patton's Civil Engineering 





C = 3-946. S = Sine of slope 



Chamier 



Chamier 



Prof. Kernot 



0=CM* 



A.A.A. Science, 1888. C = 40 to 80 



E. T.D.Myers 



= CAs 



Committee of Ass. Ey. Superinten- 

 dents. C varies from 1 to 4 



Prof. Talbot 



0=CA* 



Committee of Ass. Ey. Superinten- 





A 



dents. C from I to 1 



E. M. Peck 



°=4 



Committee of Ass. Ey. Superinten- 





dents. C from 4 to 6 



Cleeman 



0=CA2 



Proc. Inst. C.E., Vol. LVIII. 

 C = lto 1-6 



Steane 



0=A 0-6 2 



Trans. Eoyal Soc, Victoria, 1887. 



Q=Cubic feet per sec. from Catchment. A=Area of Catchment in Acres. 

 E=Eainfall in Inches per hour. M= „ „ Square Miles. 



0=Area of Opening in Square Feet. C=A constant depending on circumstances. 



