. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 4 BULLETIN 402^ U. S. DEPARTMENT OP AGEICULTUEE. March, to July, inclusive. A more detailed discussion of climatic data recorded at the Akron Field Station follows. /O PRECIPITATION. In general, the precipitation of eastern Colorado decreases as the altitude increases, or from east to west. When the foothills are reached, however, there is a rapid increase in rainfall. The rainfall is also greater on the high divide between the Platte and Arkansas Rivers than at lower elevations to the north or south. In the river vall
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 4 BULLETIN 402^ U. S. DEPARTMENT OP AGEICULTUEE. March, to July, inclusive. A more detailed discussion of climatic data recorded at the Akron Field Station follows. /O PRECIPITATION. In general, the precipitation of eastern Colorado decreases as the altitude increases, or from east to west. When the foothills are reached, however, there is a rapid increase in rainfall. The rainfall is also greater on the high divide between the Platte and Arkansas Rivers than at lower elevations to the north or south. In the river valleys the additional precipitation from local showers may con- siderably affect the total. Local storms of greater or less importance occur every year. They are most common during the summer months. At other times the storm area is usually quite extensive. The limits of the local storms are often very clearly marked. A rainfall of an inch or more may occur at a distance of only 2 or 3 miles from a point where there is no pre- cipitation. Torrential rains are not uncom- mon, and much dam- age results from hail. The distribution of precipitation through- out the year is usu- ally favorable to ce- real production. The annual and seasonal rainfall at Akron from 1905 to 1915 is shown graphically in figure 2. The annual and aver- age precipitation by months for the 11 years from 1905 to 1915 is given in Table I. The data for the first three years and portions of the fourth and fifth years, as noted, are from the records of the United States Weather Bureau. These observations were made at the town of Akron, which is about 90 feet higher in elevation than the field station and about 4 miles distant. The remaining data are from the records of the Biophysical Laboratory of the Bureau of Plant Industry at the Akron Field Station. The average precipitation in the 11-year period, 1905 to 1915, in- clusive, as shown in Table I, is inches. Of this total, inches fell during the month
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