89 



miner's iiiclu's h:ive been decreed to :i stated iminber of acres that use 

 lias l)eeii made of the decisions in compiling- the following;- tables: 



Duty of water in court decisioiis in Montuna. 



Name of stream. 



Carlxin County: 



SiiKf ('reck 



CoU'Cn-ek 



Ki'd L(m1.i,'i' Creek.. 

 Kocky Fork Creek. 

 Blue Water Creek . 



Total 



Dateof decree. 



Juil. 7, I'.Mtl 

 Miir. II, IKOi 

 July '.21, 1904 

 Aug. 21. 1903 

 Feb. 29, 1904 



Hiivalli Comity: 



Eight Mile Creek 



Lost Horse Creek 



Barnaby Creek 



Larry Crei'k 



MillCreek 



Fred Burr Creek 



Sleeping Child Creek . 



Total 



Gallatin County— East Gallatin River. 



Missonlti County: 



Carlton Creek 



Rattlesnake Creek 



Total 



Sweet Grass County: 



Bridger Creek 



Spring Creek 



Big Boulder River. 



Do 



Duck Creek 



Otter Creek 



Duck Creek 



Total 



May 27, 1^97 

 June 14,1898 

 Oct. 17,1898 



....do 



Mar. 9,1903 

 Mur. 10,1904 

 Mar. 3, 1904 



Apr. 2, 1892 



Feb. 21,1902 

 .July 9,1903 



Miner's 



inches of 



water. 



5(ir, 



720 

 (1,683 

 r)l,916 

 2, 466 



Acres of 

 land. 



495 



720 



6,683 



51,886 



2, 466 



62, 350 



62, 250 



930 

 39 



302 



257 

 2, 993 

 3, 069 



640 



8,230 



1,353 

 160 

 480 

 280 

 4, 249 

 5, 713 

 620 



12,855 



2, 623 



Mar. 18,1898 

 Noy. 17, 1S99 

 Feb. 16,1901 

 Fi'l). 19,1901 



do 



June 2.1, 1903 

 do 



1,9.57 

 1,803 



3,477 

 3, 869 



3,760 



7, 346 



455 

 300 

 400 

 700 

 4.50 

 075 

 2, 386 



5, 366 



880 



320 



320 



625 



1,400 



1,440 



6, 032 



11,017 



These summaries show that 82,320 miner's inches of water have been 

 decreed to irrit;ate i)<i,01il acres of land, or at the rate of 1 miner's inch 

 to 1.17 acres. In Car])()n Count}' during the past three years 62,350 

 miner's inches have been oranted for the purpose of irrigating (52,250 

 acres, or slightly more than 1 miner's inch per acre, or 1 cubic foot 

 per second for each 40-acre tract. This would require a continuous 

 flow for about eighty-two days to supply a depth of 4.1 feet, the aver- 

 age of all the measurements reported in the preceding pages. The 

 court decrees, therefore, correspond approximately to general practice. 



SEEPAGE AND RETURN WATERS. 



Unfortunately^ most canals lose in transit large quantities of Avater, 

 varying from 10 to 60 per cent of the amount diverted. A part of 

 these losses frequently returns to the same stream either on the surface 

 or through subsurface strata, and is diverted by other canals located 

 at lower levels. 



In irrigated valleys the first, second, and third benches, which 

 extend upward like terraces from a stream, are usually watered b}^ 



