526 Bulletin 84 



KAir.Ar. FORKST reserve; 



The Kaibab Plateau is a large region capped with surface soil 

 of limestone origin. The maximum elevation is about 9000 feet. 

 The annual precipitation probably averages more than twenty 

 inches, and mostly sinks into subterranean courses which reappear 

 as springs, one of the largest forming Bright Angel Creek which 

 flows into the Colorado River about 2000 feet below the canyon rim. 

 Numerous small drainage courses run through the northern and 

 western parts of the Reserve, chief of which is Tenney's Gulch, 

 which empties into Kanab Creek. Summit Valley, one of the prin- 

 cipal agricultural areas of the north end of the plateau, merges into 

 Telegraph Flat which is continued in the area east of Kanab along 

 Johnson Run. Numerous small parks of fifty to two hundred 

 acres occur at various places on the plateau, but elevations of 7000 

 to 9000 feet render dry-farming somewhat precarious. Precipita- 

 tion falls largely as snow, and the frost-free season is short. 



Reclamation by dry-farming in this region is feasible, not so 

 much on the plateau proper, as in the lower valleys bordering the 

 plateau, such as Kanab Creek Valley and Johnson Run. A suc- 

 cessful dry-farm on White Sage Flats, sixteen miles southwest of 

 Fredonia, has been operated since 1910, and has satisfactorily pro- 

 duced wheat, rye, barley, potatoes, beans, and corn. Telegraph 

 Flat, slightly east of north of White Sage Flat, ofifers a consider- 

 able area of similar soil. On the east side of Kanab Creek near 

 Fredonia, somewhat extensive areas of dry-farm lands have been 

 successfully operated for many years. In this vicinity the soils are 

 deep fine loams, except in small basins wdiere they are quite adobe. 

 Alkali is frequently encountered both in the soil and in the under- 

 ground water. About 100 acres near Fredonia with irrigation have 

 produced good crops of alfalfa, small grains, corn, and deciduous 

 fruits. 



Throughout the region there are excellent opportunities for a 

 combination of livestock and dry-farming where the summer range 

 of the Kaibab Forest Reserve can be supplemented with dry-farmed 

 feeds in winter. 



VALLEYS OF SOUTHEASTERN ARIZONA 



At elevations of 3500 to 5000 feet large areas of dry-farm lands 

 are found in valleys of the southeastern part of the State. Chief 



