Figure A-1. Location of Impound Points in Supply Band I, 

 5,000 Pound Per Square Mile Per Year Density Level. 



'' '■'m Of supP^S 



\> 



o^ 



circle approaches 50 percent of the width of the hand as the width be- 

 comes smaller or the distance between the inner perimeter and the pro- 

 cessing plant becomes longer. 



Relationship of Road Distance to Radial Distance 



Numerous studies have shown empirical analyses of the difference 

 between actual road distance and radial or airline distances to the same 

 points in a given area. Bressler and Hammerberg in a milk asseml3ly 

 study in Connecticut states that "Despite natural barriers and the wind- 

 ing road network in Connecticut, there is a high correlation between 

 road and airline distance. An investigation of this relationship has indi- 

 cated that the distances from individual farms to markets by improved 

 roads may be represented approximately by 2.4 miles plus 102 percent 

 of the airline distance. This regression describes the relationship very 

 exactly, resulting in a coefficient of correlation of 0.992."^ Henry and 

 Seagraves in their report on broiler production in North Carolina stated 

 "In empirical studies, air distance should be converted to road distance. 

 In the vicinity of Robbins, North Carolina, the average road distance is 

 1.703 -|- 1.16 A, where A is the air distance in miles."^ 



Theoretically, the road distance should have a relationship to air- 

 line or radial distance such that the road distance is the summation of 

 the radial distance and the lateral distance to the farm. If all farms are 

 located on radial roads from the central point, then the relationship 

 will be 1:1. As the number of farms located off radial roads increases, 

 the ratio becomes greater. 



1 R. G. Bressler and D. O. Hammerberg, Efficiency of Milk Marketing in Connecti- 

 cut, 3. Economies of the Assembly of Milk, Storrs Agricultural Experiment Station 

 Bulletin, No, 239, p. 44. 



- W. R. Henry and J. A. Seagraves, "Economic Aspects of Broiler Production Den- 

 sity," Journal of Farm Economics, Vol. XLII, No. 1, p. 3. 



39 



