Dry farming in relation to rainfall and evaporation dryfarminginrela00brig Year: 1910 10 DRY FARMING IN RELATION TO RAINFALL AND EVAPORATION. THE DISTRIBUTION OF THE ANNUAL RAINFALL IN DRY-FARMING REGIONS. The accompanying chart (fig. 1) shows the annual rainfall in the western United States, and has been prepared by the writers with particular reference to dry-farming The region repre- Fig. 1.—Chart showing the distribution of the annual rainfall in the dry-farming sections of the United States. sented in the chart has been divided into zones, the boundaries of the zones being
Dry farming in relation to rainfall and evaporation dryfarminginrela00brig Year: 1910 10 DRY FARMING IN RELATION TO RAINFALL AND EVAPORATION. THE DISTRIBUTION OF THE ANNUAL RAINFALL IN DRY-FARMING REGIONS. The accompanying chart (fig. 1) shows the annual rainfall in the western United States, and has been prepared by the writers with particular reference to dry-farming The region repre- Fig. 1.—Chart showing the distribution of the annual rainfall in the dry-farming sections of the United States. sented in the chart has been divided into zones, the boundaries of the zones being represented by lines along which the rainfall is uniform. For example, the heavy curved line marked 20, starting in the north- a This chart is based upon the state rainfall maps (see pp. 33 to 45), which include the available rainfall records of the Weather Bureau to January, 1910. 188
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