LOCAL CONDITIONS WHICH AFFECT DRY FARMING. 



21 



farming except with irrigation. About 30 miles southeast of De.seret 

 is the town of Filhnore, which lies close to the western slope of a 

 mountain range, the crest of which is 10,000 feet above sea level. In 

 the first jiart of the table is shown the total annual precipitation at 

 Deseret and Fillmore for all the years for which there are records, 

 and also the dif 

 ference in favor 

 of Fillmore due 

 to the effect of 

 the mountains. 



In the second 

 part of the table 

 Fillmore is com- 

 pared with Ricli- 

 field, which is 

 only 16 miles 

 away, but on the 

 opposite side of 

 the mountain 



lange. xiere aiSO no. O.— Diagram showing the total annual precipitation at Levan, 



all the available Utah, i890-i906. 



records for both places are given. In this case the difference is even 

 greater than is shown in the first case. Such facts show plainly that 

 it is useless to estimate the probable rainfall at anj^ place in this 

 region where records have not been kept luiless the toi^ography is well 

 known and direct comparison is possible wdth a similar location where 

 the facts are known. 



Table I. — Differences in total annual precipitation between points in Utah 

 located near each other, arranged to shoir the inflnence of iopographi/. 



» July records missing. 



103 



