CLIMATOLOGY RAINFALL, 



15 



CLIMATOLOGY. 



RAINFALL. 



The rainfall of the territory under investigation decreases pro- 

 gressively from the eastern border to the northwest and southwest, 

 reaching the lowest limit in the southwest. The average annual 

 rainfall in Lavaca County in the extreme eastern portion of the sec- 

 tion is more than 30 inches, while at Llano, in the low mountain 

 country in the northwest, the average annual rainfall is only about 22 

 inches. In the extreme southwestern portion some localities report 

 as low an average as 20 inches or somewhat less. 



Table II. — Anniutl preciintation for 190'J in the region of San Antonio, Tex. 



Stations. 



Total 

 precipi- 

 tation. 



Austin 



Beeville 



Blanco 



Boerae 



Cuero 



Falfurrias 



Flatonia 



Fredericksburg 

 Georgetown . . . 



Gonzales 



Hallettsville. . . 

 Hondo 



Inches. 

 20.57 

 30.81 

 24.13 

 25.76 

 23.43 

 25.42 

 28.42 

 21.86 

 19.68 

 24.53 

 31.93 

 17.54 



Departure 



from 



normal. 



Inches. 

 -13.78 

 + 1.25 



- 5.31 



- 6.11 

 -10.66 



- 6.52 

 -15.79 



- 1.22 

 -10.53 



Stations. 



Total 

 precipi- 

 tation. 



Kerrville 



Luling 



Marble Falls... 

 New Braunfels 



Rossville 



Range 



Sabinal 



San Antonio... 



San Marcos 



Taylor 



Uvalde 



Victoria 



Inches. 

 26.02 

 21.26 

 21.14 

 19.66 

 16.59 

 18.94 

 19.34 

 14.92 

 29.81 

 20.72 

 18.19 

 33.58 



Departure 



from 

 normal. 



Inches. 



- 3.83 



- 7.93 



-10.45 

 "-ii.'29 



-11.91 

 - 1.51 

 -14.75 



Table II shoAvs that the total rainfall for the year varied from 14.92 

 inches at San Antonio to 33.58 inches at Victoria. All stations except 

 Beeville show less rainfall than normal, the departure varying from 

 about 4 to 15 inches in the greater portion of the territory. 



For the year 1909 only a narrow .strip of territory about 25 miles 

 in width, occupying the extreme southeastern portion, had a rainfall 

 slightly over 30 inche.s. (See fig. 2.) The greater part of the terri- 

 tory north of Bexar County had a rainfall of 20 to 30 inches, while a 

 strip 25 or 30 miles wide lying just west of the more humid south- 

 eastern portion had a rainfall similar to the northern half. In a small 

 area at the extreme north in Williamson County the rainfall was only 

 10 to 20 inches. The extreme west and the entire southAvest had a 

 rainfall of 10 to 20 inches with the exception of a small part of 

 Zavalla and Dimmit Counties, where it dropped to less than 10 

 inches. From the above it may be seen that about one-half of the 

 entire area had a total annual precipitation ranging from 10 to 20 

 inches. 



226 



