1903 



FORESTRY AND IRRIGATION 



crease of service is under the super- 

 vision of Mr. Alfred Bannister, of San 

 Francisco, who is on the ground and 

 carrying on the operations. 



The water was shut off October i, 

 and all flumes and earth work widened. 

 Flumes were treated with two coats of 

 asphaltum. All earth work in gravel 

 was cemented with Portland cement and 

 treated with asphaltum to prevent seep- 

 age. The old canal passed around the 

 noted Painted Rocks on a trestle go 

 feet high. Thence the water was dis- 

 charged into a redwood barrel inverted 

 siphon 32 inches in diameter and crossed 

 Cowiche Canyon, 900 feet, under 100- 

 f oot pressure. The plans are to discard 

 the trestle and construct a 500 -foot 

 tunnel through the Painted Rocks, 

 cementing and asphalting it through- 

 out, and to build another siphon 2 

 inches larger in diameter alongside the 

 old one. Both are the work of the Ex- 

 celsior Pipe Works of San Francisco. 



The water along the entire line of 

 the canal is measured to the consumer 

 over Cippoletti weirs in cubic feet and 

 fractions thereof. These weirs were 

 installed by Sydney Arnold, resident 



Government Hydrographer, and are 

 generally considered the most accurate 

 and satisfactory of the known methods 

 of water measurement. 



The largest weir on the Yakima Com- 

 pany 's canal is 48 inches long and 

 serves about 700 acres. 



For service the company's charges 

 are as follows : A water right under the 

 canal costs $30 per acre and has hereto- 

 fore been subject to annual mainte- 

 nance averaging $r per acre per year, 

 but owing to the cost of improvements, 

 this fee will be $1.50 per acre for the 

 next few 7 years. 



The Wyoming; Development Company. 



The Wyoming Development Com- 

 pany of Wheatland, which supplies the 

 water for the prosperous Wheatland 

 colony, takes its water from the Sybille 

 and L,aramie rivers. The former stream 

 runs parallel with the land from the 

 southwest to the northwest corner, and 

 the latter practically bounds it on the 

 north. 



The company has constructed three 

 canals. The first, or No. i, is 34 miles 

 in length, has a width of 25 feet on the 



INVERTED SIPHON OF THE YAKIMA VALLEY CANAL COMPANY, NORTH YAKIMA, WASHINGTON. 



