17 



Discharge of Cache la Poudre River above Fort Collins, lS9.'f-1903. 



Month. 



Stage. 



fMaximum 

 April - - - -{Mean 



iMinimum. 



(Maximum . 

 May <Mean 



(Minimum. 



I Maximum . 

 June - -^Mean. 



iMinimum. 



(Maximum . 

 July - - <Mean,_ 



[Minimum. 



{Maximum . 

 Mean. 

 Minimum . 



September. 



[Maximum 



•jMean 



IMinimum. 



Discharge. 



Cubic feet 



persecond. 



2,934 



.521 



74 



5,100 



1,495 



200 



4,376 



1,985 



5.59 



2,701 



776 



200 



974 



320 



91 



488 



180 



43 



Greater 



( + )arless 



( — ) than 



rights. 



Cubic feet 

 persecond. 

 -1,054 

 -3,467 

 -3,914 

 +1,212 

 -2,493 

 -3,788 

 + 388 

 -2,003 

 -3,429 

 -1,287 

 -3,212 

 -3,788 

 -3,014 

 -3,668 

 -3,897 

 -3,500 

 -3,808 

 -3,945 



This table shows that at times in May and June the discharge of the 

 Cache hi Poudre is large enough to supply all decreed rights and 

 leave some Abater to pass down the stream. The mean for June 

 equals almost exactly one-half of the decreed rights, while the mini- 

 mum for June, the month of largest flow, is about one-seventh of the 

 sum of the rights. The minima for May and July are about one- 

 twentieth of all the rights, the minimum for August is about one 

 forty-fourth of the rights, that for April is about one fifty-fourth, 

 and that for September about one ninetj^-third. 



The areas irrigated and the number of ditches and reservoirs along 

 the South Platte and tributaries in Colorado, as reported to the State 

 engineer, are given below. The areas are stated in round numbers 

 and are only approximate. It is the opinion of the State engineer 

 that they are over rather than under the truth. For administrative 

 purposes the State is divided into districts, as shown on the map. 

 (PI. I.) The areas are given by districts. 



Ditches, reservoirs, and areas irrigated on South Platte and tributaries in 



Colorado. 



