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NEW YORK STATE MUSEUM 



to have been seriously affected by strong winds. Still the daily 

 record shows that there must have been some wind action. The 

 current velocities were obtained after the methods used by the 

 Mississippi Kiver Commission and described in their reports, all 

 velocity observations being taken with a current meter, with 

 electrical appliances for recording the number of revolutions. 

 The following are some of the results obtained : 1 



Mean bight 



Mean hight on Buffalo Discbarge per 



Date on local gage gage second 



18! )1 Feet Feet Cu. feet 



December 24 0.05 —2.95 164,648 



December 14 0.65 —1.85 191,822 



December 21 0.735 —1.75 193,522 



December 20 0.835 —1.75 201,433 



December 22 r 1.125 —1.45 208,597 



December 10 1 . 33 — . 50 218,353 



1892 1 



May 19 1.562 —0.80 213,180 



May 7 1.750 —0.85 218,988 



May 24 2. 292 +0.15 236,762 



The tabulation shows (1) a variation in lake elevations, as indi- 

 cated in the Buffalo gage, from — 2.95 on December 24, 1891, to 

 +0.15 on May 24, 1892, a range of 3.10 feet; (2) a variation in 

 discharge of 72,114 cubic feet per second. There are some dis- 

 crepancies in the results which it is not necessary to discuss at 

 length; but in the absence of more satisfactory data we may safely 

 assume, in view of the foregoing evidence as to the small runoff of 

 streams tributary to and in the vicinity of the Great Lakes, that 

 the figures obtained in the fall of 1891 and spring of 1892, are more 

 nearly correct than the larger figures of the Lake Survey. By 

 plotting the observed discharges a mean discharge curve has been 

 obtained, from which the discharge of the river art points within 

 the range of the observation can be taken off, when one has the 

 tubulated nights of the Buffalo gage before aim. At present 

 ihese measurements are, on the whole, not considered sufficiently 



i Annual Report of Chief of Engineers, United States Army, 1893. part 

 VI, p. 43C7. 



