MURPHY : NOTES ON DTSCHARGE OF THE KANSAS RIVER. 



165 



hours. We have applied this table for the ten years from Jan. i, 

 1886 to Dec. 31, 1895, assuming that the cross section where dis- 

 charge measurements were made has changed very little during 

 this time. The soundings show that the bed is hard rock or stone, 

 except near the banks. No repairs of any magnitude have been 

 made on the dam during this period, and those that have been 

 made, have not — Mr. Bowersock thinks — materially changed the 

 cross-section or velocity of approach. 



Table II gives the monthly, mean monthly and annual discharge 

 in acre feet, for the ten years 1886-95. Fig. 5 shows diagram- 

 matically the mean njonthly discharges. It is seen from this figure 

 that the maximum discharge is in May and the minimum in 

 December. 



Table III gives some interesting facts of the different years. 

 Column two gives the greatest gauge reading. Column three the 

 number of weeks the gauge read zero or less. Column four the 

 number of weeks that the gauge continuously read zero — five the 

 time of maximum gauge reading. Column six longest period of zero 

 gauge reading, and seven the maximum monthly discharge. 



Zero gauge reading corresponds to a discharge of 787 cubic feet 

 per second. We see then that eleven years out of these fifteen the 

 discharge at this place was less than 790 cubic feet per second for 

 three or more weeks at a time. From measurements made by the 

 writer, and additional facts furnished by Mr. Bowersock in regard 

 to the power of his dam — which it is not necessary to present in 

 these notes, we find that the average discharge for Dec. 1894. and 

 Jan. 1895, was not more than 550 cubic feet per second. 



TABLE r, 

 KANSAS RIVER (LAWRENCE) RATING TABLE (189.)) ACRE FEET IN 24 UOLTRS. 



