lKIMCATloX KXI'KKIMKXTS IN IDAHO. 



45 



south side of Snake River in Twin Falls County. Of the Boise 

 Valley canals the Riverside, Farmers' Cooperative, Farmers' Union, 

 and Settlers' irrigate clay loam bench soils almost exclusively, while 

 the Boise Valley, Pioneer, and Eureka irrigate the more porous 

 sandy loam and gravelly bottom soils. The ground water usually 

 lies rather close to the surface under the lands irrigated by the 

 bottom canals. The Randall and the Clark and Edwards canals 

 irrigate very gravelly soil in the upper Snake River Valley, the gravel 

 being of a very porous nature to a depth of at least 80 feet, at which 

 depth the ground water is found. The South Side Twin Falls Canal 

 irrigates approximately 200,000 acres of gently rolling clay loam soils 

 with an average slope of about 50 feet per mile, the soil underlain 

 with lava rock and ranging from 2 to 40 feet in depth, with a probable 

 average of 8 feet. The data secured from these canal systems during 

 the Idaho investigation are shown in a condensed form in tables 

 XXII and XXIII, which follow. The volumes diverted by the canals 

 during the season of 1911 were measured by W. G. Steward, of the 

 United States Reclamation Service, and the remainder of the data 

 was secured by our own assistants. 



Table XXII shows areas devoted to different crops under the 

 canals investigated: 



Table XXII. — Acreage devoted to different crops, and percentage of areas actually irri- 

 gated under ten different canals. 



Name of canal. 



Riverside 



Do 



Farmers' Coopera- 

 tive 



Do 



Farmers' Union. . . 



Do 



Settlers' 



Do 



Boise Valley 



Do 



Eureka 



Pioneer 



Do 



Randall ,. 



Clark and Edwards 



South Side Twin 



Falls 



Do 



Total 



Average per 

 cent 



Year. 



Hay. 



Acres. 



1911 

 1912 



1911 



1912 i 



1911 | 



1912 



1911 



1912 



1911 



1912 



1911 



Ml 



1912 



1912 



1912 



1912 

 1913 



4,059.00 

 3,455.75 



5,526.75 



44.4 



4,890.00 



37.4 



3,339.44 



48.8 



3,045.35 



42.6 



4, 385. 25 



37.1 



4,490.25 



38.2 



332. 25 



14.9 



267. 00 



11.7 



369. 00 



17.9 



115.25 



10.2 



132. 50 



11.5 



1,193.50 



36.6 



570. 00 



41.9 



59,229.00 

 54,903.00 



150,303.29 



Per 

 cent. 



54.7 

 50.1 



40.2 

 36.8 



Pasture. 



175.25 

 627. 25 



1,626.00 



2,289.50 



1,171.94 



1,534.74 



2,157.25 



1,848.20 



1,189.09 



1,222.50 



1, 138. 75 



667. 67 



689. 32 



207. 50 



97.00 



10,094.00 

 12,212.00 



38.8 



38,947.96 



Per 



cent. 



2.4 

 9.1 



13.1 

 17.5 

 17.1 

 21.5 

 18.2 

 15.7 

 53.4 

 53.4 

 55.2 

 59.3 

 60.0 

 6.4 

 7.1 



6.8 

 8.2 



Acres. 



911.00 

 1,360.00 



2,043.50 



2,354.25 



1, 526. 94 



1,737.00 



3, 686. 50 



3,294.75 



277. 80 



336. 00 



505. 00 



197. 90 



166. 75 



1,145.00 



463. 50 



56,379.00 

 60,805.00 



137, 189. 89 



Per 

 cent. 



12.2 

 19.7 



16.4 



18.0 

 22.3 

 24.3 

 31.2 

 28.0 

 12.5 

 14.7 

 24.5 

 17.6 

 14.5 

 35.2 

 34.0 



38.3 



40.7 



35.4 



Orchard. 1 



Acres. 



2,2S0.25 

 1,455.50 



3,239.00 



3, 528. 66 



804. 38 



827. 33 



1,590.80 



2,121.80 



426. 35 



461. 50 



49.25 



145.72 



160. 17 



709. 00 



232. 00 



21,607.00 

 21,391.00 



Per 



cent. 



61,029.71 



30.7 

 21.1 



26.1 

 27.1 

 11.8 

 11.6 

 13.5 

 18.1 

 19.2 

 20.2 

 2.4 

 12.9 

 14.0 

 21.8 

 17.0 



14.7 

 14.3 



Total. 



7,425.50 

 6, 898. 50 



12,435.25 

 13,062.41 

 6,842.70 

 7,144.42 

 11,819.80 

 11,755.00 

 2,225.49 

 2, 2S7. 00 

 2,062.00 

 1, 126. 54 

 1,14S.74 

 3,255.00 

 1,362.50 



147, 309. 00 

 149,311.00 



387,470.85 

 100. 00 



1 Includes small fruits, garden, potatoes, and home grounds. 



Table XXII includes no uncleared land, but only the areas actually 

 irrigated under each canal system investigated, and shows that 38.8 

 per cent of the area was devoted to hay, 10.1 per cent to pasture, 

 35.4 per cent to grain, and 15.7 per cent to orchard and miscellaneous 





