562 



FORESTRY AND IRRIGATION 



December 



with the Little Wind River, on August 

 17, 1904, had a discharge of 592.3 sec- 

 ond-feet. The North Fork of Popo 

 Agie River on August 31 had a dis- 

 charge of 118.8 second-feet. 



HIGH LINE CANAL. 



A survey was made during the 

 early part of July, 1904, of a high 

 line canal. Its head is in the south- 

 west corner of Sec, 7, T.4 N., R-3 W. 

 Its source is in the Big Wind River 

 and the waters stored in the Brooks, 

 Troy and Dinwoody lakes can be util- 

 ized in this canal if necessary. The 

 course of the canal is easterly, cover- 

 ing the entire strip of irrigable land 

 north of Big Wind River. Its capac- 

 ity is 1,300 second-feet; its width 50 

 feet on the bottom, and its slope i foot 

 per mile. 



The location of this canal line is 

 on comparatively level ground, and 

 it extends about 72 miles to cover 40.- 

 ooo acres of land north of Muddy 

 Creek. Laterals can be constructed 

 from the canal to cover all the land, 

 but it is believed that other canal lines 

 can be taken out at a less cost than 

 the laterals, and owing to the fact that 

 the fall of the country is too great 

 for the slope for canals, it will be nec- 

 essary to build a number of drops in 

 them. 



On the high line canal are three 

 drops; the first at a point 36 miles 

 from the head, has a drop of 86 feet ; 

 the second 37 miles, a drop of 55 feet ; 

 and the third at 48 miles, a drop of 

 60 feet. These drops are necessary 

 in order to avoid heavy rock side hill 

 work, but very little land will be lost 

 by them. 



Another canal line is proposed in 

 order to avoid carrying the water so 

 far in canals. This is taken from the 

 Big Wind River in Sec.36, T.3 N.. 

 R.I W., and has very little side hill 

 work. The low line is taken out of 

 Big Wind River in Sec.32, T.2 



R.2 E. This is also on good ground 

 for construction, with very little hill 

 work and ground of a character to 

 maintain a canal. 



LAND ON DIMINISHED STRIP. 



Between Little Wind and Popo Agie 

 rivers are about 60,000 acres of irri- 

 gable land, which will have to be wa- 

 tered from these streams. Storage 

 will be required. These streams for 

 a portion of the irrigation season have 

 water enough, and if the present sys- 

 tem of farming by the Indians were 

 continued, will always have enough, 

 but if all the irrigable land is once un- 

 der cultivation the normal flow of the 

 streams will be inadequate for late ir- 

 rigating. 



At the mouth of the South Fork 

 in Little Wind River Canyon there is 

 storage for about 16,000 acre-feet, and 

 above the falls are numerous lakes 

 which will doubtless afford storage 

 for all the flood waters required. Mea- 

 dow Creek, one of the lesser tributaries, 

 has flow sufficient to irrigate about 

 10,000 acres, and it is thought that this 

 area of irrigable land can be found 

 adjacent to it. The stream, howev- 

 er, sinks in a cave near the mouth of 

 the canyon, and in order to utilize the 

 water it will be necessary to construct 

 a canal 2,000 feet long through a lime- 

 stone ledge carrying the stream around 

 the point where it sinks, and turning 

 it into the channel below, where it 

 could then be taken out on the land. 



On the Big Horn River at the 

 mouth of the canyon in Owl Creek 

 Mountains is the only reservoir site 

 on this stream. Its capacity cannot 

 be determined until a detailed survey 

 has been made. In Sheep Mountain 

 Canyon on Big Horn River is a good 

 site for a dam, but the valley is nar- 

 row and the area covered by the wa- 

 ter small, so that it is not thought prac- 

 ticable for a reservoir site. 



